feat: ✨ Upload Notebook
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debug.py
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446
debug.py
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@ -0,0 +1,446 @@
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import queue
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# -*- coding: utf-8 -*-
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"""Graph module.
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Provide an implementation of graphs with adjacency lists.
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In a graph, vertices are considered numbered from 0 to the order of the graph
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minus one. The vertex key can then be used to access its
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adjacency list.
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"""
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class Graph:
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""" Simple class for graph: adjacency lists
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Attributes:
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order (int): Number of vertices.
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directed (bool): True if the graph is directed. False otherwise.
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adjlists (List[List[int]]): Lists of connected vertices for each vertex.
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"""
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def __init__(self, order, directed, labels=None):
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"""Init graph, allocate adjacency lists
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Args:
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order (int): Number of nodes.
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directed (bool): True if the graph is directed. False otherwise.
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labels (list[str]): optionnal vector of vertex labels
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"""
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self.order = order
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self.directed = directed
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self.adjlists = []
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for _ in range(order):
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self.adjlists.append([])
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self.labels = labels
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def addedge(self, src, dst):
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"""Add egde to graph.
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Args:
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src (int): Source vertex.
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dst (int): Destination vertex.
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Raises:
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IndexError: If any vertex index is invalid.
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"""
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if src >= self.order or src < 0:
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raise IndexError("Invalid src index")
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if dst >= self.order or dst < 0:
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raise IndexError("Invalid dst index")
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self.adjlists[src].append(dst)
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if not self.directed and dst != src:
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self.adjlists[dst].append(src)
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def addvertex(self, number=1, labels=None):
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"""Add number vertices to graph.
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Args:
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ref (Graph).
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number (int): Number of vertices to add.
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"""
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# Increment order and extend adjacency list
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self.order += number
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for _ in range(number):
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self.adjlists.append([])
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if labels:
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self.labels += labels
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def removeedge(self, src, dst):
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"""Remove egde from the graph.
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Args:
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src (int): Source vertex.
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dst (int): Destination vertex.
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Raises:
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IndexError: If any vertex index is invalid.
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"""
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if src >= self.order or src < 0:
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raise IndexError("Invalid src index")
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if dst >= self.order or dst < 0:
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raise IndexError("Invalid dst index")
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if dst in self.adjlists[src]:
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self.adjlists[src].remove(dst)
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if not self.directed and dst != src:
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self.adjlists[dst].remove(src)
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def sortgraph(G):
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"""
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sorts adjacency lists -> to have same results as those asked in tutorials/exams
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"""
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for i in range(G.order):
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G.adjlists[i].sort()
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def dot(G):
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"""Dot format of graph.
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Args:
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Graph
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Returns:
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str: String storing dot format of graph.
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"""
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if G.directed:
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s = "digraph {\n"
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for x in range(G.order):
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if G.labels:
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s += " " + str(x) + '[label = "' + G.labels[x] + '"]\n'
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else:
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s += " " + str(x) + '\n'
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for y in G.adjlists[x]:
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s += str(x) + " -> " + str(y) + '\n'
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else:
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s = "graph {\n"
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for x in range(G.order):
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if G.labels:
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s += " " + str(x) + '[label = "' + G.labels[x] + '"]\n'
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else:
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s += " " + str(x) + '\n'
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for y in G.adjlists[x]:
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if x <= y:
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s += str(x) + " -- " + str(y) + '\n'
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return s + '}'
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def display(G, eng=None):
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"""
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*Warning:* Made for use within IPython/Jupyter only.
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eng: graphivz.Source "engine" optional argument (try "neato", "fdp", "sfdp", "circo")
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"""
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try:
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from graphviz import Source
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from IPython.display import display
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except:
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raise Exception("Missing module: graphviz and/or IPython.")
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display(Source(dot(G), engine = eng))
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# load / save gra format
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def load(filename):
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"""Build a new graph from a GRA file.
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Args:
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filename (str): File to load.
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Returns:
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Graph: New graph.
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Raises:
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FileNotFoundError: If file does not exist.
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"""
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f = open(filename)
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lines = f.readlines()
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f.close()
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infos = {}
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i = 0
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while '#' in lines[i]:
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(key, val) = lines[i][1:].strip().split(": ")
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infos[key] = val
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i += 1
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directed = bool(int(lines[i]))
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order = int(lines[i+1])
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if infos and "labels" in infos:
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labels = infos["labels"].split(',') #labels is a list of str
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G = Graph(order, directed, labels) # a graph with labels
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else:
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G = Graph(order, directed) # a graph without labels
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if infos:
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G.infos = infos
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for line in lines[i+2:]:
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edge = line.strip().split(' ')
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(src, dst) = (int(edge[0]), int(edge[1]))
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G.addedge(src, dst)
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return G
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def save(G, fileOut):
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gra = ""
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if G.labels:
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lab = "#labels: "
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for i in range(G.order - 1):
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lab += G.labels[i] + ','
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lab += G.labels[-1]
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gra += lab + '\n'
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gra += str(int(G.directed)) + '\n'
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gra += str(G.order) + '\n'
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for x in range(G.order):
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for y in G.adjlists[x]:
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if G.directed or x >= y:
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gra += str(x) + " " + str(y) + '\n'
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fout = open(fileOut, mode='w')
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fout.write(gra)
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fout.close()
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# -*- coding: utf-8 -*-
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"""Graph module.
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Provide an implementation of graphs with adjacency matrix.
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This can also be called static implementation.
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In a graph, vertices are considered numbered from 0 to the order of the graph
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minus one.
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"""
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class GraphMat:
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""" Simple class for static graph.
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Attributes:
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order (int): Number of vertices.
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directed (bool): True if the graph is directed. False otherwise.
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adj (List[List[int]]): Adjacency matrix
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"""
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def __init__(self, order, directed):
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"""
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Args:
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order (int): Number of nodes.
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directed (bool): True if the graph is directed. False otherwise.
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"""
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self.order = order
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self.directed = directed
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self.adj = [[0 for j in range(order)] for i in range(order)]
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def addedge(self, src, dst):
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"""Add egde to graph.
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Args:
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src (int): Source vertex.
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dst (int): Destination vertex.
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Raises:
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IndexError: If any vertex index is invalid.
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"""
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if src >= self.order or src < 0:
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raise IndexError("Invalid src index")
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if dst >= self.order or dst < 0:
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raise IndexError("Invalid dst index")
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self.adj[src][dst] += 1
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if not self.directed and dst != src:
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self.adj[dst][src] += 1
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def dot(G):
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"""Dot format of graph.
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Args:
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GraphMat
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Returns:
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str: String storing dot format of graph.
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"""
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if G.directed:
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s = "digraph {\n"
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link = " -> "
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for x in range(G.order):
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for y in range(G.order):
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s += (str(x) + link + str(y) + '\n') * G.adj[x][y]
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else:
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s = "graph {\n"
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link = " -- "
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for x in range(G.order):
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for y in range(x+1):
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s += (str(x) + link + str(y) + '\n') * G.adj[x][y]
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return s + '}'
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def display(G, eng=None):
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"""
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*Warning:* Made for use within IPython/Jupyter only.
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eng: graphivz.Source "engine" optional argument (try "neato", "fdp", "sfdp", "circo")
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"""
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try:
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from graphviz import Source
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from IPython.display import display
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except:
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raise Exception("Missing module: graphviz and/or IPython.")
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display(Source(dot(G), engine = eng))
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# load / save gra format (do not manage labels and other infos)
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def load(filename,):
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"""Build a new graph from a GRA file.
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Args:
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filename (str): File to load.
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Returns:
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Graph: New graph.
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Raises:
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FileNotFoundError: If file does not exist.
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"""
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f = open(filename)
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directed = bool(int(f.readline()))
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order = int(f.readline())
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g = GraphMat(order, directed)
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for line in f.readlines():
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edge = line.strip().split(' ')
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(src, dst) = (int(edge[0]), int(edge[1]))
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g.addedge(src, dst)
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f.close()
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return g
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def save(G, fileOut):
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gra = str(int(G.directed)) + '\n'
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gra += str(G.order) + '\n'
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for x in range(G.order):
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if G.directed:
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n = G.order
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else:
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n = x + 1
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for y in range(n):
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for i in range(G.adj[x][y]):
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gra += str(x) + " " + str(y) + '\n'
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fout = open(fileOut, mode='w')
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fout.write(gra)
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fout.close()
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# -*- coding: utf-8 -*-
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"""Queue module."""
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from collections import deque
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class Queue:
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"""Simple class for FIFO (first-in-first-out) container."""
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def __init__(self):
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"""Init queue."""
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self.elements = deque()
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def enqueue(self, elt):
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"""Add an element to the queue.
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Args:
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elt (Any): Element to enqueue.
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"""
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self.elements.append(elt)
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def dequeue(self):
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"""Remove and return next element from the queue.
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Returns:
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Any: Element from the queue.
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Raises:
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IndexError: If queue is empty.
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"""
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return self.elements.popleft()
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def isempty(self):
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"""Check whether queue is empty.
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Returns:
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bool: True if queue is empty, False otherwise.
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"""
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return len(self.elements) == 0
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G = Graph(10, False)
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G.adjlists = [[4, 4, 1, 3],
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[0],
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[6, 6, 6, 5, 7],
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[0],
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[0, 0, 9],
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[2, 7, 8],
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[2, 2, 2, 7],
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[2, 6, 5, 8],
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[7, 5, 8],
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[4]]
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def __smallest_level(G, M, src, perLevel):
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cur = Queue()
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cur.enqueue(src)
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cur.enqueue(None)
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M[src] = True
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temp = []
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while not cur.isempty():
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x = cur.dequeue()
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if x is None:
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if (len(temp) != 0 and temp != [src]):
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perLevel.append(temp)
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temp = []
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else:
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temp.append(x)
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for adj in G.adjlists[x]:
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if not M[adj]:
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M[adj] = True
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cur.enqueue(adj)
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cur.enqueue(None)
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def smallest_level(G, src):
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M = [False] * G.order
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perLevel = []
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__smallest_level(G, M, src, perLevel)
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min = perLevel[0]
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for element in perLevel:
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if len(element) < len(min):
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min = element
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return min
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smallest_level(G, 0)
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439
graphs.ipynb
439
graphs.ipynb
@ -6,8 +6,8 @@
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"metadata": {
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"collapsed": true,
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"ExecuteTime": {
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"end_time": "2024-12-14T10:54:32.699159Z",
|
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"start_time": "2024-12-14T10:54:32.688460Z"
|
||||
"end_time": "2024-12-14T12:23:31.698030Z",
|
||||
"start_time": "2024-12-14T12:23:31.686929Z"
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||||
}
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||||
},
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"source": [
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@ -227,166 +227,26 @@
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" fout.close()\n"
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],
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"outputs": [],
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"execution_count": 3
|
||||
"execution_count": 1
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},
|
||||
{
|
||||
"metadata": {
|
||||
"ExecuteTime": {
|
||||
"end_time": "2024-12-14T10:54:33.640420Z",
|
||||
"start_time": "2024-12-14T10:54:33.634885Z"
|
||||
"end_time": "2024-12-14T12:23:31.740543Z",
|
||||
"start_time": "2024-12-14T12:23:31.738488Z"
|
||||
}
|
||||
},
|
||||
"cell_type": "code",
|
||||
"source": [
|
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"# -*- coding: utf-8 -*-\n",
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"\"\"\"Graph module.\n",
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"\n",
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"Provide an implementation of graphs with adjacency matrix.\n",
|
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"This can also be called static implementation.\n",
|
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"\n",
|
||||
"In a graph, vertices are considered numbered from 0 to the order of the graph\n",
|
||||
"minus one.\n",
|
||||
"\n",
|
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"\"\"\"\n",
|
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"\n",
|
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"\n",
|
||||
"class GraphMat:\n",
|
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" \"\"\" Simple class for static graph.\n",
|
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"\n",
|
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" Attributes:\n",
|
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" order (int): Number of vertices.\n",
|
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" directed (bool): True if the graph is directed. False otherwise.\n",
|
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" adj (List[List[int]]): Adjacency matrix\n",
|
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" \"\"\"\n",
|
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"\n",
|
||||
" def __init__(self, order, directed):\n",
|
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" \"\"\"\n",
|
||||
" Args:\n",
|
||||
" order (int): Number of nodes.\n",
|
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" directed (bool): True if the graph is directed. False otherwise.\n",
|
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" \"\"\"\n",
|
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"\n",
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" self.order = order\n",
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" self.directed = directed\n",
|
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" self.adj = [[0 for j in range(order)] for i in range(order)]\n",
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"\n",
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"\n",
|
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" def addedge(self, src, dst):\n",
|
||||
" \"\"\"Add egde to graph.\n",
|
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"\n",
|
||||
" Args:\n",
|
||||
" src (int): Source vertex.\n",
|
||||
" dst (int): Destination vertex.\n",
|
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"\n",
|
||||
" Raises:\n",
|
||||
" IndexError: If any vertex index is invalid.\n",
|
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"\n",
|
||||
" \"\"\"\n",
|
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"\n",
|
||||
" if src >= self.order or src < 0:\n",
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" raise IndexError(\"Invalid src index\")\n",
|
||||
" if dst >= self.order or dst < 0:\n",
|
||||
" raise IndexError(\"Invalid dst index\")\n",
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"\n",
|
||||
" self.adj[src][dst] += 1\n",
|
||||
" if not self.directed and dst != src:\n",
|
||||
" self.adj[dst][src] += 1\n",
|
||||
"\n",
|
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"\n",
|
||||
"\n",
|
||||
"def dot(G):\n",
|
||||
" \"\"\"Dot format of graph.\n",
|
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"\n",
|
||||
" Args:\n",
|
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" GraphMat\n",
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"\n",
|
||||
" Returns:\n",
|
||||
" str: String storing dot format of graph.\n",
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"\n",
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||||
" \"\"\"\n",
|
||||
"\n",
|
||||
" if G.directed:\n",
|
||||
" s = \"digraph {\\n\"\n",
|
||||
" link = \" -> \"\n",
|
||||
" for x in range(G.order):\n",
|
||||
" for y in range(G.order):\n",
|
||||
" s += (str(x) + link + str(y) + '\\n') * G.adj[x][y]\n",
|
||||
" else:\n",
|
||||
" s = \"graph {\\n\"\n",
|
||||
" link = \" -- \"\n",
|
||||
" for x in range(G.order):\n",
|
||||
" for y in range(x+1):\n",
|
||||
" s += (str(x) + link + str(y) + '\\n') * G.adj[x][y]\n",
|
||||
" return s + '}'\n",
|
||||
"\n",
|
||||
"\n",
|
||||
"\n",
|
||||
"def display(G, eng=None):\n",
|
||||
" \"\"\"\n",
|
||||
" *Warning:* Made for use within IPython/Jupyter only.\n",
|
||||
" eng: graphivz.Source \"engine\" optional argument (try \"neato\", \"fdp\", \"sfdp\", \"circo\")\n",
|
||||
"\n",
|
||||
" \"\"\"\n",
|
||||
"\n",
|
||||
" try:\n",
|
||||
" from graphviz import Source\n",
|
||||
" from IPython.display import display\n",
|
||||
" except:\n",
|
||||
" raise Exception(\"Missing module: graphviz and/or IPython.\")\n",
|
||||
" display(Source(dot(G), engine = eng))\n",
|
||||
"\n",
|
||||
"\n",
|
||||
"# load / save gra format (do not manage labels and other infos)\n",
|
||||
"\n",
|
||||
"def load(filename,):\n",
|
||||
" \"\"\"Build a new graph from a GRA file.\n",
|
||||
"\n",
|
||||
" Args:\n",
|
||||
" filename (str): File to load.\n",
|
||||
"\n",
|
||||
" Returns:\n",
|
||||
" Graph: New graph.\n",
|
||||
"\n",
|
||||
" Raises:\n",
|
||||
" FileNotFoundError: If file does not exist.\n",
|
||||
"\n",
|
||||
" \"\"\"\n",
|
||||
"\n",
|
||||
" f = open(filename)\n",
|
||||
" directed = bool(int(f.readline()))\n",
|
||||
" order = int(f.readline())\n",
|
||||
" g = GraphMat(order, directed)\n",
|
||||
" for line in f.readlines():\n",
|
||||
" edge = line.strip().split(' ')\n",
|
||||
" (src, dst) = (int(edge[0]), int(edge[1]))\n",
|
||||
" g.addedge(src, dst)\n",
|
||||
" f.close()\n",
|
||||
" return g\n",
|
||||
"\n",
|
||||
"def save(G, fileOut):\n",
|
||||
" gra = str(int(G.directed)) + '\\n'\n",
|
||||
" gra += str(G.order) + '\\n'\n",
|
||||
" for x in range(G.order):\n",
|
||||
" if G.directed:\n",
|
||||
" n = G.order\n",
|
||||
" else:\n",
|
||||
" n = x + 1\n",
|
||||
" for y in range(n):\n",
|
||||
" for i in range(G.adj[x][y]):\n",
|
||||
" gra += str(x) + \" \" + str(y) + '\\n'\n",
|
||||
" fout = open(fileOut, mode='w')\n",
|
||||
" fout.write(gra)\n",
|
||||
" fout.close()\n"
|
||||
],
|
||||
"source": "",
|
||||
"id": "e12f5903c5348752",
|
||||
"outputs": [],
|
||||
"execution_count": 4
|
||||
"execution_count": null
|
||||
},
|
||||
{
|
||||
"metadata": {
|
||||
"ExecuteTime": {
|
||||
"end_time": "2024-12-14T10:54:34.476061Z",
|
||||
"start_time": "2024-12-14T10:54:34.472348Z"
|
||||
"end_time": "2024-12-14T12:23:31.807702Z",
|
||||
"start_time": "2024-12-14T12:23:31.804575Z"
|
||||
}
|
||||
},
|
||||
"cell_type": "code",
|
||||
@ -439,7 +299,7 @@
|
||||
],
|
||||
"id": "663b49e4f6763d11",
|
||||
"outputs": [],
|
||||
"execution_count": 5
|
||||
"execution_count": 2
|
||||
},
|
||||
{
|
||||
"metadata": {},
|
||||
@ -450,8 +310,8 @@
|
||||
{
|
||||
"metadata": {
|
||||
"ExecuteTime": {
|
||||
"end_time": "2024-12-14T10:54:38.976275Z",
|
||||
"start_time": "2024-12-14T10:54:38.973873Z"
|
||||
"end_time": "2024-12-14T12:23:31.826260Z",
|
||||
"start_time": "2024-12-14T12:23:31.824156Z"
|
||||
}
|
||||
},
|
||||
"cell_type": "code",
|
||||
@ -471,13 +331,13 @@
|
||||
],
|
||||
"id": "ca54f5a3f1a225b",
|
||||
"outputs": [],
|
||||
"execution_count": 6
|
||||
"execution_count": 3
|
||||
},
|
||||
{
|
||||
"metadata": {
|
||||
"ExecuteTime": {
|
||||
"end_time": "2024-12-14T10:54:39.957846Z",
|
||||
"start_time": "2024-12-14T10:54:39.955269Z"
|
||||
"end_time": "2024-12-14T12:23:31.853995Z",
|
||||
"start_time": "2024-12-14T12:23:31.851762Z"
|
||||
}
|
||||
},
|
||||
"cell_type": "code",
|
||||
@ -498,7 +358,7 @@
|
||||
]
|
||||
}
|
||||
],
|
||||
"execution_count": 7
|
||||
"execution_count": 4
|
||||
},
|
||||
{
|
||||
"metadata": {},
|
||||
@ -509,8 +369,8 @@
|
||||
{
|
||||
"metadata": {
|
||||
"ExecuteTime": {
|
||||
"end_time": "2024-12-14T10:54:41.253023Z",
|
||||
"start_time": "2024-12-14T10:54:41.250277Z"
|
||||
"end_time": "2024-12-14T12:23:31.886996Z",
|
||||
"start_time": "2024-12-14T12:23:31.884644Z"
|
||||
}
|
||||
},
|
||||
"cell_type": "code",
|
||||
@ -528,7 +388,7 @@
|
||||
],
|
||||
"id": "6920c423c0bdfc24",
|
||||
"outputs": [],
|
||||
"execution_count": 8
|
||||
"execution_count": 5
|
||||
},
|
||||
{
|
||||
"metadata": {},
|
||||
@ -539,8 +399,8 @@
|
||||
{
|
||||
"metadata": {
|
||||
"ExecuteTime": {
|
||||
"end_time": "2024-12-09T14:48:04.596974Z",
|
||||
"start_time": "2024-12-09T14:48:04.592782Z"
|
||||
"end_time": "2024-12-14T12:23:31.913924Z",
|
||||
"start_time": "2024-12-14T12:23:31.909906Z"
|
||||
}
|
||||
},
|
||||
"cell_type": "code",
|
||||
@ -561,18 +421,18 @@
|
||||
"[4, 1, 5, 1, 3, 3, 4, 4, 3, 1]"
|
||||
]
|
||||
},
|
||||
"execution_count": 8,
|
||||
"execution_count": 6,
|
||||
"metadata": {},
|
||||
"output_type": "execute_result"
|
||||
}
|
||||
],
|
||||
"execution_count": 8
|
||||
"execution_count": 6
|
||||
},
|
||||
{
|
||||
"metadata": {
|
||||
"ExecuteTime": {
|
||||
"end_time": "2024-12-09T14:48:05.120730Z",
|
||||
"start_time": "2024-12-09T14:48:05.116518Z"
|
||||
"end_time": "2024-12-14T12:23:31.946802Z",
|
||||
"start_time": "2024-12-14T12:23:31.943693Z"
|
||||
}
|
||||
},
|
||||
"cell_type": "code",
|
||||
@ -596,12 +456,12 @@
|
||||
"[[3, 4, 1, 2, 3, 2, 3, 0, 2], [6, 1, 1, 2, 0, 3, 2, 3, 2]]"
|
||||
]
|
||||
},
|
||||
"execution_count": 9,
|
||||
"execution_count": 7,
|
||||
"metadata": {},
|
||||
"output_type": "execute_result"
|
||||
}
|
||||
],
|
||||
"execution_count": 9
|
||||
"execution_count": 7
|
||||
},
|
||||
{
|
||||
"metadata": {},
|
||||
@ -612,8 +472,8 @@
|
||||
{
|
||||
"metadata": {
|
||||
"ExecuteTime": {
|
||||
"end_time": "2024-12-09T14:48:06.156919Z",
|
||||
"start_time": "2024-12-09T14:48:06.154020Z"
|
||||
"end_time": "2024-12-14T12:23:32.018541Z",
|
||||
"start_time": "2024-12-14T12:23:32.015799Z"
|
||||
}
|
||||
},
|
||||
"cell_type": "code",
|
||||
@ -696,7 +556,7 @@
|
||||
]
|
||||
}
|
||||
],
|
||||
"execution_count": 10
|
||||
"execution_count": 8
|
||||
},
|
||||
{
|
||||
"metadata": {},
|
||||
@ -910,21 +770,21 @@
|
||||
{
|
||||
"metadata": {
|
||||
"ExecuteTime": {
|
||||
"end_time": "2024-12-09T15:48:15.121203Z",
|
||||
"start_time": "2024-12-09T15:48:15.116918Z"
|
||||
"end_time": "2024-12-14T12:50:54.278706Z",
|
||||
"start_time": "2024-12-14T12:50:54.271435Z"
|
||||
}
|
||||
},
|
||||
"cell_type": "code",
|
||||
"source": [
|
||||
"def aux(G, M, src):\n",
|
||||
" newColor = not M[src]\n",
|
||||
"def aux_colors(G, M, src):\n",
|
||||
" new_color = not M[src]\n",
|
||||
" for adj in G.adjlists[src]:\n",
|
||||
" if M[adj] == None:\n",
|
||||
" M[adj] = newColor\n",
|
||||
" if not aux(G, M, adj):\n",
|
||||
" M[adj] = new_color\n",
|
||||
" if not aux_colors(G, M, adj):\n",
|
||||
" return False\n",
|
||||
" else:\n",
|
||||
" if M[adj] != newColor:\n",
|
||||
" if M[adj] != new_color:\n",
|
||||
" return False\n",
|
||||
" return True\n",
|
||||
"\n",
|
||||
@ -934,8 +794,8 @@
|
||||
" for src in range(G.order):\n",
|
||||
" if M[src] == None:\n",
|
||||
" M[src] = True\n",
|
||||
" if not aux(G, M, src):\n",
|
||||
" return False\n",
|
||||
" if not aux_colors(G, M, src):\n",
|
||||
" return False\n",
|
||||
" return True\n",
|
||||
"\n",
|
||||
"two_coloring(G1)"
|
||||
@ -948,12 +808,12 @@
|
||||
"False"
|
||||
]
|
||||
},
|
||||
"execution_count": 32,
|
||||
"execution_count": 26,
|
||||
"metadata": {},
|
||||
"output_type": "execute_result"
|
||||
}
|
||||
],
|
||||
"execution_count": 32
|
||||
"execution_count": 26
|
||||
},
|
||||
{
|
||||
"metadata": {},
|
||||
@ -970,31 +830,29 @@
|
||||
},
|
||||
"cell_type": "code",
|
||||
"source": [
|
||||
"def __fakenews(G, M, src, truth):\n",
|
||||
" cur = Queue()\n",
|
||||
" cur.enqueue(src)\n",
|
||||
"def __fakenews(G, M, src, fake):\n",
|
||||
" q = Queue()\n",
|
||||
" q.enqueue(src)\n",
|
||||
" stop = False\n",
|
||||
" while not cur.isempty() and not stop:\n",
|
||||
" x = cur.dequeue()\n",
|
||||
" if M[x] > truth + 1:\n",
|
||||
" while not q.isempty() and not stop:\n",
|
||||
" x = q.dequeue()\n",
|
||||
" if M[x] > fake:\n",
|
||||
" for adj in G.adjlists[x]:\n",
|
||||
" if M[adj] == None:\n",
|
||||
" M[adj] = M[x] - 1\n",
|
||||
" cur.enqueue(adj)\n",
|
||||
" q.enqueue(adj)\n",
|
||||
" else:\n",
|
||||
" stop = True\n",
|
||||
"\n",
|
||||
"def fakenews(G, src, truth):\n",
|
||||
" if (truth <= 2):\n",
|
||||
" raise Exception(\"truth should be > 2\")\n",
|
||||
" M = [False] * G.order\n",
|
||||
" M = [None] * G.order\n",
|
||||
" M[src] = truth\n",
|
||||
" fake = []\n",
|
||||
" __fakenews(G, M, src, truth // 2)\n",
|
||||
" for i in range(G.order):\n",
|
||||
" if M[i] == None:\n",
|
||||
" fake.append(i)\n",
|
||||
" return truth"
|
||||
" __fakenews(G, M, src, truth//2)\n",
|
||||
" L = []\n",
|
||||
" for s in range(G.order):\n",
|
||||
" if M[s] == None:\n",
|
||||
" L.append(s)\n",
|
||||
" return L"
|
||||
],
|
||||
"id": "c66ac4688a6975c9",
|
||||
"outputs": [],
|
||||
@ -1003,24 +861,191 @@
|
||||
{
|
||||
"metadata": {},
|
||||
"cell_type": "markdown",
|
||||
"source": "# 2027 - Exercice 1",
|
||||
"source": "# 2027 - Exercice 2",
|
||||
"id": "b8fa23568b4bd3df"
|
||||
},
|
||||
{
|
||||
"metadata": {},
|
||||
"metadata": {
|
||||
"ExecuteTime": {
|
||||
"end_time": "2024-12-14T12:27:17.971319Z",
|
||||
"start_time": "2024-12-14T12:27:17.967991Z"
|
||||
}
|
||||
},
|
||||
"cell_type": "code",
|
||||
"outputs": [],
|
||||
"execution_count": null,
|
||||
"source": [
|
||||
"def __longest_path(G, dist, src):\n",
|
||||
"# Reconstitution du graph du partiel\n",
|
||||
"# Initialisation d'un graphe non orienté avec 10 sommets\n",
|
||||
"G = Graph(order=10, directed=False)\n",
|
||||
"\n",
|
||||
"# Ajout des arêtes selon l'image fournie\n",
|
||||
"G.addedge(0, 1)\n",
|
||||
"G.addedge(0, 2)\n",
|
||||
"G.addedge(0, 8)\n",
|
||||
"G.addedge(0, 6)\n",
|
||||
"G.addedge(1, 2)\n",
|
||||
"G.addedge(1, 3)\n",
|
||||
"G.addedge(2, 3)\n",
|
||||
"G.addedge(2, 8)\n",
|
||||
"G.addedge(3, 5)\n",
|
||||
"G.addedge(3, 6)\n",
|
||||
"G.addedge(4, 5)\n",
|
||||
"G.addedge(5, 7)\n",
|
||||
"G.addedge(6, 9)\n",
|
||||
"G.addedge(7, 9)\n",
|
||||
"G.addedge(8, 9)\n",
|
||||
"\n",
|
||||
"def longest_path(G):\n",
|
||||
" dist = [None] * G.order\n",
|
||||
" for src in range(G.order):\n",
|
||||
" __longest_path(G, dist, src)"
|
||||
"# Tri des listes d'adjacence pour une sortie cohérente\n",
|
||||
"sortgraph(G)\n",
|
||||
"\n",
|
||||
"# Affichage du graphe au format DOT (si tu as graphviz configuré)\n",
|
||||
"print(dot(G))\n",
|
||||
"\n",
|
||||
"# Affichage visuel dans Jupyter Notebook (optionnel)\n",
|
||||
"# display(G, eng=\"neato\") # Utilise l'option \"neato\" pour une disposition automatique"
|
||||
],
|
||||
"id": "9a3a85d15dccbb97"
|
||||
"id": "f3f003f5ecd72f9e",
|
||||
"outputs": [
|
||||
{
|
||||
"name": "stdout",
|
||||
"output_type": "stream",
|
||||
"text": [
|
||||
"digraph {\n",
|
||||
"0 -- 1\n",
|
||||
"0 -- 2\n",
|
||||
"0 -- 6\n",
|
||||
"0 -- 8\n",
|
||||
"1 -- 0\n",
|
||||
"1 -- 2\n",
|
||||
"1 -- 3\n",
|
||||
"2 -- 0\n",
|
||||
"2 -- 1\n",
|
||||
"2 -- 3\n",
|
||||
"2 -- 8\n",
|
||||
"3 -- 1\n",
|
||||
"3 -- 2\n",
|
||||
"3 -- 5\n",
|
||||
"3 -- 6\n",
|
||||
"4 -- 5\n",
|
||||
"5 -- 3\n",
|
||||
"5 -- 4\n",
|
||||
"5 -- 7\n",
|
||||
"6 -- 0\n",
|
||||
"6 -- 3\n",
|
||||
"6 -- 9\n",
|
||||
"7 -- 5\n",
|
||||
"7 -- 9\n",
|
||||
"8 -- 0\n",
|
||||
"8 -- 2\n",
|
||||
"8 -- 9\n",
|
||||
"9 -- 6\n",
|
||||
"9 -- 7\n",
|
||||
"9 -- 8\n",
|
||||
"}\n"
|
||||
]
|
||||
}
|
||||
],
|
||||
"execution_count": 15
|
||||
},
|
||||
{
|
||||
"metadata": {
|
||||
"ExecuteTime": {
|
||||
"end_time": "2024-12-14T12:42:59.642392Z",
|
||||
"start_time": "2024-12-14T12:42:59.636696Z"
|
||||
}
|
||||
},
|
||||
"cell_type": "code",
|
||||
"source": [
|
||||
"\"\"\"\n",
|
||||
"def __smallest_level(G, M, src, perLevel):\n",
|
||||
" cur = Queue()\n",
|
||||
" cur.enqueue(src)\n",
|
||||
" cur.enqueue(None)\n",
|
||||
" M[src] = True\n",
|
||||
" temp = []\n",
|
||||
" while not cur.isempty():\n",
|
||||
" x = cur.dequeue()\n",
|
||||
" if x is None:\n",
|
||||
" if (len(temp) != 0 and temp != [src]):\n",
|
||||
" perLevel.append(temp)\n",
|
||||
" temp = []\n",
|
||||
" else:\n",
|
||||
" temp.append(x)\n",
|
||||
" for adj in G.adjlists[x]:\n",
|
||||
" if not M[adj]:\n",
|
||||
" M[adj] = True\n",
|
||||
" cur.enqueue(adj)\n",
|
||||
" cur.enqueue(None)\n",
|
||||
"\n",
|
||||
"def smallest_level(G, src):\n",
|
||||
" M = [False] * G.order\n",
|
||||
" perLevel = []\n",
|
||||
" __smallest_level(G, M, src, perLevel)\n",
|
||||
" min = perLevel[0]\n",
|
||||
" for element in perLevel:\n",
|
||||
" if len(element) < len(min):\n",
|
||||
" min = element\n",
|
||||
" return min\n",
|
||||
"\"\"\"\n",
|
||||
"\n",
|
||||
"def smallest(G, src):\n",
|
||||
" dist = [None] * G.order\n",
|
||||
" q = Queue()\n",
|
||||
" q.enqueue(src)\n",
|
||||
" dist[src] = 0\n",
|
||||
" small = G.order\n",
|
||||
" d = 0\n",
|
||||
" L = []\n",
|
||||
" while not q.isempty():\n",
|
||||
" x = q.dequeue()\n",
|
||||
" if dist[x] > d:\n",
|
||||
" if len(L) < small:\n",
|
||||
" small = len(L)\n",
|
||||
" Res = L\n",
|
||||
" d += 1\n",
|
||||
" L = []\n",
|
||||
" for y in G.adjlists[x]:\n",
|
||||
" if dist[y] == None:\n",
|
||||
" dist[y] = dist[x] + 1\n",
|
||||
" q.enqueue(y)\n",
|
||||
" L.append(y)\n",
|
||||
" return Res"
|
||||
],
|
||||
"id": "9a3a85d15dccbb97",
|
||||
"outputs": [],
|
||||
"execution_count": 23
|
||||
},
|
||||
{
|
||||
"metadata": {
|
||||
"ExecuteTime": {
|
||||
"end_time": "2024-12-14T12:43:03.858284Z",
|
||||
"start_time": "2024-12-14T12:43:03.855864Z"
|
||||
}
|
||||
},
|
||||
"cell_type": "code",
|
||||
"source": [
|
||||
"for s in range(10):\n",
|
||||
" print(s, \"=>\", smallest(G, s))"
|
||||
],
|
||||
"id": "5be240ac4da2b002",
|
||||
"outputs": [
|
||||
{
|
||||
"name": "stdout",
|
||||
"output_type": "stream",
|
||||
"text": [
|
||||
"0 => [4]\n",
|
||||
"1 => [0, 2, 3]\n",
|
||||
"2 => [4, 7]\n",
|
||||
"3 => [1, 2, 5, 6]\n",
|
||||
"4 => [5]\n",
|
||||
"5 => [0, 8]\n",
|
||||
"6 => [4]\n",
|
||||
"7 => [5, 9]\n",
|
||||
"8 => [5]\n",
|
||||
"9 => [1, 4]\n"
|
||||
]
|
||||
}
|
||||
],
|
||||
"execution_count": 24
|
||||
}
|
||||
],
|
||||
"metadata": {
|
||||
|
||||
Loading…
x
Reference in New Issue
Block a user