Set_Zeros.java

//link : https://leetcode.com/problems/set-matrix-zeroes/description/

public class Set_Zeros {
    public void setZeroes(int[][] matrix) {
        int x = 1, y = 1;
        int m = matrix.length;
        int n = matrix[0].length;
        for (int i = 0; i < m; i++) {
            if(matrix[i][0] == 0){
                x = 0;
                break;
            }
        }
        for(int j = 0; j < n; j++){
            if(matrix[0][j] == 0){
                y = 0;
                break;
            }
        }

        for(int i = 1; i < m; i++) {
            for(int j = 1; j < n; j++){
                if(matrix[i][j] == 0){
                    matrix[i][0] = 0;
                    matrix[0][j] = 0;
                }
            }
        }

        for(int j = 1; j < n; j++){
            if(matrix[0][j] == 0){
                for (int i = 0; i < m; i++){
                    matrix[i][j] = 0;
                }
            }
        }

        for(int i = 1; i < m; i++){
            if(matrix[i][0] == 0){
                for(int j = 1; j < n; j++){
                    matrix[i][j] = 0;
                }
            }
        }

        if(y == 0){
            for (int j = 0; j < n; j++){
                matrix[0][j] = 0;
            }
        }

        if(x == 0){
            for(int i = 0; i < m; i++){
                matrix[i][0] = 0;
            }
        }
    }
}