Hackerrank - Arrays: Left Rotation Solution
A left rotation operation on an array shifts each of the array's elements unit to the left. For example, if left rotations are performed on array , then the array would become .
Given an array of integers and a number, , perform left rotations on the array. Return the updated array to be printed as a single line of space-separated integers.
Complete the function rotLeft in the editor below. It should return the resulting array of integers.
rotLeft has the following parameter(s):
- An array of integers .
- An integer , the number of rotations.
The first line contains two space-separated integers and , the size of and the number of left rotations you must perform.
The second line contains space-separated integers .
Print a single line of space-separated integers denoting the final state of the array after performing left rotations.
5 4 1 2 3 4 5
5 1 2 3 4
When we perform left rotations, the array undergoes the following sequence of changes:
Solution in Python
def rotLeft(a, d): d = d%len(a) a = a[d:]+a[:d] return a n,d = map(int,input().split()) a = list(map(int,input().split())) print(*rotLeft(a, d))