-
Notifications
You must be signed in to change notification settings - Fork 1
/
for-loop-implementation.py
40 lines (30 loc) · 1.58 KB
/
for-loop-implementation.py
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
import timeit
def not_for_loop(index = 0, elements = [], operation = None):
if index < len(elements):
if operation is not None:
elements[index] = operation(elements[index])
not_for_loop(index + 1, elements, operation)
return elements
def for_loop_using_while(elements = [], operation = None):
index = 0
while index < len(elements):
if operation is not None:
elements[index] = operation(elements[index])
index += 1
return elements
def for_loop(elements = [], operation = None):
for index in range(len(elements)):
elements[index] = operation(elements[index])
return elements
# print(not_for_loop(0, [1, 2, 3, 4, 5], lambda x: x.__add__(1)))
# print(for_loop_using_while([1, 2, 3, 4, 5], lambda x: x.__add__(1)))
# print(for_loop([1, 2, 3, 4, 5], lambda x: x.__add__(1)))
assert not_for_loop(0, [1, 2, 3, 4, 5], lambda x: x.__add__(1)) == [2, 3, 4, 5, 6]
assert for_loop_using_while([1, 2, 3, 4, 5], lambda x: x.__add__(1)) == [2, 3, 4, 5, 6]
assert for_loop([1, 2, 3, 4, 5], lambda x: x.__add__(1)) == [2, 3, 4, 5, 6]
print(timeit.timeit('not_for_loop(0, [1, 2, 3, 4, 5], lambda x: x.__add__(1))', setup = 'from __main__ import not_for_loop', number = 100000))
# 0.10954952286556363
print(timeit.timeit('for_loop_using_while([1, 2, 3, 4, 5], lambda x: x.__add__(1))', setup = 'from __main__ import for_loop_using_while', number = 100000))
# 0.08992556994780898
print(timeit.timeit('for_loop([1, 2, 3, 4, 5], lambda x: x.__add__(1))', setup = 'from __main__ import for_loop', number = 100000))
# 0.08654258819296956