Spiral Matrix

Medium Algorithmic Challenges

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Problem Statement

Write a C program to return all elements of an R x C matrix in spiral order.

Input Format

First line: R and C. Then R lines of C space-separated integers.

Output Format

Print elements in spiral order separated by a space.

Constraints

1 <= R, C <= 10

Sample Input

Sample Output

1 2 3 6 9 8 7 4 5

Explanation

Traverses matrix in a spiral clock-wise loop.

Starter Code

#include <stdio.h>

int main() {
    int r, c;
    if (scanf("%d %d", &r, &c) == 2) {
        int a[r][c];
        for (int i = 0; i < r; i++) {
            for (int j = 0; j < c; j++) scanf("%d", &a[i][j]);
        }
        // Write your code here
    }
    return 0;
}

Limits

Time Limit: 1s
Memory Limit: 256MB

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