Python/sorts/i_sort.py

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def insertionSort(arr):
"""
>>> a = arr[:]
>>> insertionSort(a)
>>> a == sorted(a)
True
"""
for i in range(1, len(arr)):
key = arr[i]
j = i - 1
while j >= 0 and key < arr[j]:
arr[j + 1] = arr[j]
j -= 1
arr[j + 1] = key
arr = [12, 11, 13, 5, 6]
insertionSort(arr)
print("Sorted array is:")
for i in range(len(arr)):
print("%d" % arr[i])