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// 73. Set Matrix Zeroes
#include "leetcode.h"
/*
* given an 'm x n' integer 'matrix', if an element is '0', set its entire row
* and columns to '0's. you must do it in place
*/
void setZeroes(int **matrix, int matrixSize, int *matrixColSize) {
bool *r = (bool *)calloc(matrixSize, sizeof(bool));
bool *c = (bool *)calloc(*matrixColSize, sizeof(bool));
for (int i = 0; i < matrixSize; ++i)
for (int j = 0; j < *matrixColSize; ++j)
if (!matrix[i][j]) {
r[i] = true;
r[j] = true;
}
for (int i = 0; i < matrixSize; ++i)
for (int j = 0; j < *matrixColSize; ++j)
if (r[i] || c[j])
matrix[i][j] = 0;
}
int main() {
int m1i[3][3] = {{1, 1, 1}, {1, 0, 1}, {1, 1, 1}},
m2i[3][4] = {{0, 1, 2, 0}, {3, 4, 5, 2}, {1, 3, 1, 5}};
struct two_d_arr m1, m2;
two_d_arr_init(&m1, ARRAY_SIZE(m1i), ARRAY_SIZE(m1i[0]), m1i);
two_d_arr_init(&m2, ARRAY_SIZE(m2i), ARRAY_SIZE(m2i[0]), m2i);
setZeroes(m1.arr, m1.row_size, m1.col_size);
setZeroes(m2.arr, m2.row_size, m2.col_size);
for (int i = 0; i < m1.row_size; i++) {
for (int j = 0; j < m1.col_size[i]; j++)
printf("%d ", m1i[i][j]); // expect: [[1,0,1],[0,0,0],[1,0,1]]
printf("\n");
}
for (int i = 0; i < m2.row_size; i++) {
for (int j = 0; j < m2.col_size[i]; j++)
printf("%d ", m2i[i][j]); // expect: [[0,0,0,0],[0,4,5,0],[0,3,1,0]]
printf("\n");
}
two_d_arr_free(&m1);
two_d_arr_free(&m2);
}
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