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], end=' ')
 
arr = [1, 2, 3, 4, 5, 6, 7]
leftRotate(arr, 2)
printArray(arr)