Reverse array in groups
Submissions: 29765   Accuracy:


  Difficulty: Basic   Marks: 1

Given an array arr[] of positive integers of size N. Reverse every sub-array of K group elements.

The first line of input contains a single integer T denoting the number of test cases. Then T test cases follow. Each test case consist of two lines of input. The first line of each test case consists of an integer N(size of array) and an integer K separated by a space. The second line of each test case contains N space separated integers denoting the array elements.

For each test case, print the modified array.

1 ≤ T ≤ 200
1 ≤ N, K ≤ 107
1 ≤ A[i] ≤ 1018

5 3
1 2 3 4 5

3 2 1 5 4

Testcase 1:
Reversing groups in size 3, first group consists of elements 1, 2, 3. Reversing this group, we have elements in order as 3, 2, 1.


** For More Input/Output Examples Use 'Expected Output' option **

Contributor: Harshit Sidhwa
Author: rajatjha

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