mirror of
https://github.com/krahets/hello-algo.git
synced 2025-10-31 10:26:48 +08:00
1c0f350ad6
* Add the intial translation of code of all the languages * test * revert * Remove * Add Python and Java code for EN version
66 lines
1.4 KiB
Python
66 lines
1.4 KiB
Python
"""
|
|
File: iteration.py
|
|
Created Time: 2023-08-24
|
|
Author: krahets (krahets@163.com)
|
|
"""
|
|
|
|
|
|
def for_loop(n: int) -> int:
|
|
"""for loop"""
|
|
res = 0
|
|
# Loop sum 1, 2, ..., n-1, n
|
|
for i in range(1, n + 1):
|
|
res += i
|
|
return res
|
|
|
|
|
|
def while_loop(n: int) -> int:
|
|
"""while loop"""
|
|
res = 0
|
|
i = 1 # Initialize condition variable
|
|
# Loop sum 1, 2, ..., n-1, n
|
|
while i <= n:
|
|
res += i
|
|
i += 1 # Update condition variable
|
|
return res
|
|
|
|
|
|
def while_loop_ii(n: int) -> int:
|
|
"""while loop (two updates)"""
|
|
res = 0
|
|
i = 1 # Initialize condition variable
|
|
# Loop sum 1, 4, 10, ...
|
|
while i <= n:
|
|
res += i
|
|
# Update condition variable
|
|
i += 1
|
|
i *= 2
|
|
return res
|
|
|
|
|
|
def nested_for_loop(n: int) -> str:
|
|
"""Double for loop"""
|
|
res = ""
|
|
# Loop i = 1, 2, ..., n-1, n
|
|
for i in range(1, n + 1):
|
|
# Loop j = 1, 2, ..., n-1, n
|
|
for j in range(1, n + 1):
|
|
res += f"({i}, {j}), "
|
|
return res
|
|
|
|
|
|
"""Driver Code"""
|
|
if __name__ == "__main__":
|
|
n = 5
|
|
res = for_loop(n)
|
|
print(f"\nfor loop sum result res = {res}")
|
|
|
|
res = while_loop(n)
|
|
print(f"\nwhile loop sum result res = {res}")
|
|
|
|
res = while_loop_ii(n)
|
|
print(f"\nwhile loop (two updates) sum result res = {res}")
|
|
|
|
res = nested_for_loop(n)
|
|
print(f"\nDouble for loop traversal result {res}")
|