Swap Kth Elements
Posted: 25 Feb, 2021
Difficulty: Easy
Given an array ‘ARR’ of size ‘N,’ swap the Kth element from beginning with the Kth element from the end.
For example:
If ‘N’ = 5 and K = 2
[1, 2, 3, 4, 5]
Then the output will be [1, 4, 3, 2, 5].
Input format :
The first line of input contains an integer T denoting the number of test cases.
The first line of each test case contains two space-separated integers N, and K, where N is the number of elements of the array and K is the index.
The second line of each test case contains ‘N’ space-separated integers, denoting the array elements.
Output format :
For each test case, print the array after swapping the Kth element from the start and the Kth element from the end.
The output of each test case will be printed in a separate line.
Note:
You do not need to print anything; it has already been taken care of. Just implement the given function.
Constraints:
1 <= T <= 5
1 <= K < N <= 5000
Time Limit : 1 sec
Approach 1
Approach 2
SIMILAR PROBLEMS
Print Name
Posted: 20 Apr, 2022
Difficulty: Easy
Min Heap
Posted: 5 May, 2022
Difficulty: Moderate
Left Rotate an Array by One
Posted: 17 May, 2022
Difficulty: Easy
Largest Element in the Array
Posted: 17 May, 2022
Difficulty: Easy
Matrix Boundary Traversal
Posted: 20 May, 2022
Difficulty: Easy