73. Set Matrix Zeroes

class Solution {
    public void setZeroes(int[][] matrix) {
        List<Integer> row = new ArrayList<>();
        List<Integer> col = new ArrayList<>();
        for (int i = 0; i < matrix.length; i++) {
            for (int j = 0; j < matrix[0].length; j++) {
                if (matrix[i][j] == 0) {
                    row.add(i);
                    col.add(j);
                }
            }
        }
        for (int i = 0; i < matrix.length; i++) {
            for (int j = 0; j < matrix[0].length; j++) {
                if (row.contains(i) || col.contains(j)) {
                    matrix[i][j] = 0;
                }
            }
        }
    }
}

class Solution {
    public void setZeroes(int[][] matrix) {
        boolean isFirstColZero = false;
        boolean isFirstRowZero = false;
        
        for (int i = 0; i < matrix.length; i++) {
            if (matrix[i][0] == 0) {
                isFirstColZero = true;
                break;
            }
        }
        
        for (int j = 0; j < matrix[0].length; j++) {
            if (matrix[0][j] == 0) {
                isFirstRowZero = true;
                break;
            }
        }

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