TheProgrammingPortal

In this tutorial, you will learn a python program for left array rotation. You will understand how to shift elements towards the left in an array using loop by n elements.

Source code

array = [1,2,3,4,5,6,7,8,9,10]
shift = 4

def printArray(array):
    for i in range(0, len(array)):
        print(array[i], end=' ')

def leftRotation(array, shift):
    for i in range(0, shift):
        temp = array[0]  # saving First element in temp variable
        for j in range(0, len(array) - 1):  # shift remaining array elements one by one
            array[j] = array[j + 1]

        array[len(array) - 1] = temp
    return array

print("Array Before Rotation: ")
printArray(array)

rotatedArray = leftRotation(array, shift)
print("\nArray after left rotation: ")
printArray(rotatedArray)

Video