spiral2Darray.cpp

#include <iostream>
using namespace std;

int main(){
    int n, m;
    cin >> n >> m;
    int a[n][m];

    for(int i=0; i<n; i++){
        for(int j=0; j<m; j++){
            cin >> a[i][j];
        }
    }

    //spiral order print
    int row_start = 0, row_end = n - 1, column_start = 0, column_end = m-1;

    while(row_start <= row_end && column_start <= column_end){

        //for row start
        for (int col = column_start; col<=column_end; col++){
            cout << a[row_start][col] << " ";
        }
        row_start++;

        //for column end
        for (int row = row_start; row <= row_end; row++){
            cout << a[row][column_end] << " ";
        }
        column_end--;

        //for row end
        for (int col = column_end; col >= column_start; col--){
            cout << a[row_end][col] << " ";
        }
        row_end--;

        //for column start
        for (int row = row_end; row>=row_start; row--){
            cout << a[row][column_start] << " ";
        }
        column_start++;
    }

}