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Created array_rotation.py #38

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Created array_rotation.py #38

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28 changes: 28 additions & 0 deletions array_rotation.py
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Original file line number Diff line number Diff line change
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# Function to reverse arr[] from index start to end
def rverseArray(arr, start, end):
while (start < end):
temp = arr[start]
arr[start] = arr[end]
arr[end] = temp
start += 1
end = end-1


def leftRotate(arr, d):
n = len(arr)
rverseArray(arr, 0, d-1)
rverseArray(arr, d, n-1)
rverseArray(arr, 0, n-1)


def printArray(arr):
for i in range(0, len(arr)):
print arr[i],

arr = [1, 2, 3, 4, 5, 6, 7]
leftRotate(arr, 2) # Rotate array by 2
printArray(arr)