73. Set Matrix Zeroes

Given a m x n matrix, if an element is 0, set its entire row and column to 0. Do it in place.

public class Solution {
    public void setZeroes(int[][] matrix) {
        if(matrix == null || matrix.length == 0)
            return;
        
        int rows = matrix.length;
        int cols = matrix[0].length;
        
        boolean empty_row0 = false;
        boolean empty_col0 = false;
        for(int i = 0; i < cols; i++){
            if(matrix[0][i] == 0){
                empty_row0 = true;
                break;
            }
        }
        
        for(int i = 0; i < rows; i++){
            if(matrix[i][0] == 0){
                empty_col0 = true;
                break;
            }
        }
        
        for(int i = 1; i < rows; i++) {
            for(int j =1; j<cols; j++){
                if(matrix[i][j] == 0){
                    matrix[0][j] = 0;
                    matrix[i][0] = 0;
                }
            }
        }
        
        for(int i = 1; i<rows; i++) {
            for (int j=1; j< cols; j++) {
                if(matrix[0][j] == 0 || matrix[i][0] == 0)
                    matrix[i][j] = 0;
            }
        }
      
        if(empty_row0){
            for(int i = 0; i < cols; i++){
                matrix[0][i] = 0;
            }           
        }
        
        if(empty_col0){
            for(int i = 0; i < rows; i++){
                matrix[i][0] = 0;
            }           
        }

    }
}

class Solution {
    public void setZeroes(int[][] matrix) {
        boolean setFirstRowToZeros = false;
        boolean setFirstColumnToZeros = false;

        for(int j = 0; j <= matrix[0].length - 1; j++) {
            if(matrix[0][j] == 0) {
                setFirstRowToZeros = true;
                break;
            }
        }

        for(int i = 0; i <= matrix.length - 1; i++) {
            if(matrix[i][0] == 0) {
                setFirstColumnToZeros = true;
                break;
            }
        }

        for(int i = 1; i <= matrix.length - 1; i++) {
            for(int j = 1; j <= matrix[0].length - 1; j++) {
                if(matrix[i][j] == 0) {
                    matrix[i][0] = 0;
                    matrix[0][j] = 0;
                }
            }
        }

        for(int i = 1; i <= matrix.length - 1; i++) {
            if(matrix[i][0] == 0) {
                for(int j = 1; j <= matrix[0].length - 1; j++) {
                    matrix[i][j] = 0;
                }
            }
        }

        for(int j = 1; j <= matrix[0].length - 1; j++) {
            if(matrix[0][j] == 0) {
                for(int i = 1; i <= matrix.length - 1; i++) {
                    matrix[i][j] = 0;
                }
            }
        }

        if(setFirstRowToZeros) {
            for(int j = 0; j <= matrix[0].length - 1; j++) {
                matrix[0][j] = 0;
            }
        }

        if(setFirstColumnToZeros) {
            for(int i = 0; i <= matrix.length - 1; i++) {
                matrix[i][0] = 0;
            }
        }
    }
}

class Solution {
    public void setZeroes(int[][] matrix) {
        int iiLength = matrix.length;
        if (iiLength == 0) {
            return;
        }
        boolean makeZero;
        int jjLength = matrix[0].length;
        int[] jj = new int[jjLength];
        for (int i = 0; i < matrix.length; i++) {
            makeZero = false;
            for (int j = 0; j < matrix[0].length; j++) {
                if (jj[j] == 1 && matrix[i][j] != 0) {
                    matrix[i][j] = 0;
                } else if (matrix[i][j] == 0) {
                    makeZero = true;
                    int tmpI = i;
                    while (0 <= tmpI) {
                        matrix[tmpI][j] = 0;
                        tmpI--;
                    }
                    jj[j] = 1;
                }
            }
            if(makeZero) {
                matrix[i] = new int[jjLength];
            }
        }
    }
}

class Solution {
    public void setZeroes(int[][] matrix) {
        int iiLength = matrix.length;
        if (iiLength == 0) {
            return;
        }
        boolean makeZero;
        int jjLength = matrix[0].length;
        int[] jj = new int[jjLength];
        for (int i = 0; i < matrix.length; i++) {
            makeZero = false;
            for (int j = 0; j < matrix[0].length; j++) {
                if (jj[j] == 1 && matrix[i][j] != 0) {
                    matrix[i][j] = 0;
                } else if (matrix[i][j] == 0) {
                    makeZero = true;
                    int tmpI = i;
                    while (0 <= tmpI) {
                        matrix[tmpI][j] = 0;
                        tmpI--;
                    }
                    jj[j] = 1;
                }
            }
            if(makeZero) {
                matrix[i] = new int[jjLength];
            }
        }
    }
}