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setmatriz zero
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class Solution {
public void setZeroes(int[][] matrix) {
int m = matrix.length;
int n = matrix[0].length;
boolean firstRowZero = false;
boolean firstColZero = false;
for (int i = 0; i < m; i++) {
if (matrix[i][0] == 0) {
firstColZero = true;
break;
}
}
for (int j = 0; j < n; j++) {
if (matrix[0][j] == 0) {
firstRowZero = true;
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 i = 1; i < m; i++) {
for (int j = 1; j < n; j++) {
if (matrix[i][0] == 0 || matrix[0][j] == 0) {
matrix[i][j] = 0;
}
}
}
if (firstRowZero) {
for (int j = 0; j < n; j++) {
matrix[0][j] = 0;
}
}
if (firstColZero) {
for (int i = 0; i < m; i++) {
matrix[i][0] = 0;
}
}
}
public static void printMatrix(int[][] matrix) {
for (int[] row : matrix) {
for (int val : row) {
System.out.print(val + " ");
}
System.out.println();
}
}}