epicours/Algo/B2/Exercises/Repetitive tutorial.md

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## Exercise 1.1
```python
def zorglub(n: int) -> int:
j = 1
k = 0
i = 1
while i <= n:
j = i * j
k = j + k
i = i + 1
return k
```
The function return the sum of the factorial of n
## Exercise 1.2
```
def multiplication(x: int, y: int) -> int:
result = 0
for i in range(y):
result = result + x
return result
def multiplication2(x: int, y: int) -> int:
result = 0
if x < 0 and y < 0:
i = 0
x = -x
y = -y
while i < y:
result = result + x
i += 1
return result
elif y < 0:
y = -y
i = 0
while i < y:
result = result + x
i += 1
return -result
else:
i = 0
while i < y:
result = result + x
i += 1
return result
```
## Exercise 1.3
```
def exponentiation(x: int, n: int) -> int: