20220507 Rotatearray

title: "Codility RotateArray"

date: "2022-05-07"

// you can also use imports, for example: // import java.util.*;

// you can write to stdout for debugging purposes, e.g. // System.out.println("this is a debug message");

class Solution {
    public int[] solution(int[] A, int K) {
        //check special cases
        if(K == 0 ) return A;
        if(A == null || A.length == 0 ) return A;
        if(A.length == K) return A;

        int length = A.length;
        int[] resultList = new int[length];

        int rightStep = 0;  //the number of steps to the right
        if(length > K)      rightStep = K;
        else                rightStep = K % length;

        for(int i = 0; i < length; ++i)
        {
            int toPosition = (i+rightStep)%length;
            resultList[toPosition] = A[i];
        }

        return resultList;
    }
}