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SetMatrixZeroes.java
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52 lines (47 loc) · 961 Bytes
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package com.mirraico.leetcode;
public class SetMatrixZeroes {
public void setZeroes(int[][] matrix) {
int m = matrix.length;
if(m == 0) return;
int n = matrix[0].length;
if(n == 0) return;
boolean f1 = false, f2 = false;
for(int i = 0; i < m; i++) {
for(int j = 0; j < n; j++) {
if(matrix[i][j] == 0) {
matrix[i][0] = matrix[0][j] = 0;
if(i == 0) f1 = true;
if(j == 0) f2 = true;
}
}
}
for(int i = 1; i < m; i++) {
if(matrix[i][0] == 0) {
for(int j = 1; j < n; j++) {
matrix[i][j] = 0;
}
}
}
for(int j = 1; j < n; j++) {
if(matrix[0][j] == 0) {
for(int i = 1; i < m; i++) {
matrix[i][j] = 0;
}
}
}
if(f1) {
for(int j = 0; j < n; j++) {
matrix[0][j] = 0;
}
}
if(f2) {
for(int i = 0; i < m; i++) {
matrix[i][0] = 0;
}
}
}
public static void main(String[] args) {
int[][] matrix = {{1,0,2}};
new Solution().setZeroes(matrix);
}
}