Rotate_anticlockwise.c

/*

Rotate Matrix 90 Degree Anti-Clockwise

A MxN matrix is passed as the input. The program must rotate the matrix by 90 degrees in anti-clock wise direction and print the rotated matrix as the output.

Input Format:
First line will contain the value of M.
Second line will contain the value of N.
Next M lines will contain the N values with each value separated by one or more space.

Output Format:
N lines will contain the M values with each value separated by one or more space.

Boundary Conditions:
2 <= M <= 15
2 <= N <= 15

Example Input/Output 1:
Input:
2
3
4 5 9
1 3 5

Output:
9 5
5 3
4 1

Example Input/Output 2:
Input:
4
4
1 2 3 4
5 6 7 8
9 10 11 12
13 14 15 16

Output:
4 8 12 16
3 7 11 15
2 6 10 14
1 5 9 13

*/

#include<stdio.h>
int main(){
        int rows,cols,i,j;
        scanf("%d %d",&rows,&cols);
        int a[rows][cols];
        for(i=0;i<rows;i++){
                for(j=0;j<cols;j++){
                        scanf("%d",&a[i][j]);
                }
        }
        for(j=cols-1;j>=0;j--){
                for(i=0;i<rows;i++){
                        printf("%d ",a[i][j]);
                }
                printf("\n");
        }
        return 0;
}