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42 lines
901 B
42 lines
901 B
#include <stdio.h>
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#include <stdlib.h>
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#include <time.h>
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void print_matrix(int matrix[9][9]) {
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int i,j;
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for (i = 0; i < 9; i++) {
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for (j = 0; j < 9; j++) {
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printf("%d ", matrix[i][j]);
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}
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printf("\n");
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}
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}
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int main() {
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srand(time(NULL));
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int matrix[9][9] = {0};
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int i,j;
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for (i = 0; i < 9; i += 3) {
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int nums[9] = {1, 2, 3, 4, 5, 6, 7, 8, 9};
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int flag1[9] = {0};
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int flag2[9] = {0};
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for(j=0;j<9;j++){
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int t,p;
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re1: t=rand()%9;
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if(flag1[t]==1){
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goto re1;}
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re2: p=rand()%9;
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if(flag2[p]==1){
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goto re2;
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}
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matrix[i+j/3][p]=nums[t];
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flag1[t]=1;
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flag2[p]=1;
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}
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}
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print_matrix(matrix);
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return 0;
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}
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