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56 lines
1.2 KiB
56 lines
1.2 KiB
#include "SudokuMatrix.h"
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#include <stdio.h>
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/**
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* @brief 交换两个整数的值
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*
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* @param a 一个整数的地址
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* @param b 另一个整数的地址
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*/
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void Swap(int*a, int *b){
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int temp = *a;
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*a = *b;
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*b = temp;
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}
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/**
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* @brief 将一个 int 数组的内容随机打乱
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*
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* @param array 需要打乱的数组
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* @param length 数组的长度
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*/
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void Shuffle(int* array, int length){
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if (length != 0){
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for (int i = length - 1; i > 0; i--) {
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int j = rand() % (i + 1);
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Swap(&array[i], &array[j]);
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}
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}
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}
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void RandomMatrix(SudokuMatrix* matrix){
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int random_row[9] = {1,2,3,4,5,6,7,8,9};
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int random_place[9] = {0, 1, 2, 3, 4, 5, 6, 7, 8};
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// 重置矩阵内容为全0
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for (int i=0;i<9;i++){
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for (int j=0;j<9;j++){
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matrix->matrix[i][j] = 0;
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}
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}
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for (int i=0;i<3;i++){
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// 先生成这九个数的顺序，再随机生成这九个数应该在哪里。
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Shuffle(random_row,9);
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for (int j=0;j<3;j++){
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Shuffle(random_place,9);
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for (int k=0;k<3;k++){
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matrix->matrix[i*3+j][random_place[k]] = random_row[j*3+k];
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}
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}
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}
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} |