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Problem

Submissions

Array Rotation

Contributed by

Ratnesh

Easy

0/40

Avg time to solve 20 mins

Success Rate 80 %

0 upvotes

Problem Statement

There is an array ‘A’ of size ‘N’.

You are also given an integer ‘X’ and direction ‘DIR’. You must rotate the array in the direction of ‘DIR’ by ‘X’ positions.

You must return the rotated array.

For example:

Input :
A = [6, 2, 6, 1], X = 1, DIR = ‘LEFT’

Output :
2 6 1 6

Explanation: Rotate array ‘A’ to the left one time.
[6, 2, 6, 1] => [2, 6, 1, 6]

Detailed explanation ( Input/output format, Notes, Constraints, Images )

Input Format:

First-line contains 'T,' denoting the number of Test cases.
For each Test case:
The first line contains two integers, ‘N', ‘X’, and the string ‘DIR’.
The second line has ‘N’ integers denoting the array ‘A’.

Output Format:-

You must return the rotated array.

Note:-

You don’t need to print anything. Just implement the given function.

Constraints :

1 <= T <= 10
1 <= N <= 10^5 
1 <= X <= 10^9
‘DIR’ is an element of {‘LEFT’, ‘RIGHT’}
Time Limit: 1 sec

Sample Input 1 :

2
4 1 LEFT
1 2 3 4
6 2 RIGHT
1 2 4 3 5 6

Sample Output 1 :

2 3 4 1
5 6 1 2 4 3

Explanation Of Sample Input 1 :

For test case one:

Input :
A = [1, 2, 3, 4], X = 1, DIR = ‘LEFT’

Output :
2 3 4 1

Explanation: Rotate array ‘A’ to the left one time.
[1, 2, 3, 4] => [2, 3, 4, 1]

For test case two:

Input :
A = [1, 2, 4, 3, 5, 6], X = 2, DIR = ‘RIGHT’

Output :
5 6 1 2 4 3

Explanation: Rotate array ‘A’ to the right one time.
[1, 2, 4, 3, 5, 6] => [6, 1, 2, 4, 3, 5]

Sample Input 2 :

2
6 3 LEFT
22 8 4 7 5 10
6 2 RIGHT
9 3 1 6 3 9

Sample Output 2 :

7 5 10 22 8 4 
3 9 9 3 1 6

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