Rotate Matrix

Medium Algorithmic Challenges

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Problem Statement

Write a C program to rotate an N x N matrix by 90 degrees clockwise in-place.

Input Format

First line: N. Then N lines of N space-separated integers.

Output Format

Print the rotated matrix.

Constraints

1 <= N <= 10

Sample Input

Sample Output

7 4 1
8 5 2
9 6 3

Explanation

Matrix rotated 90 degrees clockwise.

Starter Code

#include <stdio.h>

int main() {
    int n;
    if (scanf("%d", &n) == 1) {
        int a[n][n];
        for (int i = 0; i < n; i++) {
            for (int j = 0; j < n; j++) scanf("%d", &a[i][j]);
        }
        // Write your code here
    }
    return 0;
}

Limits

Time Limit: 1s
Memory Limit: 256MB

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