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.

Java

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

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

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

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

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