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jvzhen(2).c

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+#include <stdio.h>  
+#include <stdlib.h>  
+#include <time.h>  
+#include <stdbool.h>  
+
+void print_sudoku(int matrix[9][9]) {
+    for (int i = 0; i < 9; i++) {
+        for (int j = 0; j < 9; j++) {
+            printf("%d ", matrix[i][j]);
+            if ((j + 1) % 3 == 0 && j != 8) {
+                printf("| ");
+            }
+        }
+        printf("\n");
+        if ((i + 1) % 3 == 0 && i != 8) {
+            printf("------+-------+------\n");
+        }
+    }
+}
+
+bool is_valid(int* nums, int num) {
+    for (int i = 0; i < 3; i++) {
+        if (nums[i] == num) return false; // 检查数字是否重复  
+    }
+    return true;
+}
+
+int main() {
+    srand(time(NULL)); // 初始化随机数种子  
+
+    int sudoku_matrix[9][9] = { 0 }; // 初始化数独矩阵  
+
+    for (int i = 0; i < 3; i++) {
+        int count[3] = { 0 };
+        for (int j = 1; j < 10; j++) {
+            int row = rand() % 3;
+            int col = rand() % 9;
+            while (sudoku_matrix[3 * i + row][col] != 0 || count[row] == 3) {
+                row = rand() % 3;
+                col = rand() % 9;
+            }
+            sudoku_matrix[3 * i + row][col] = j;
+            count[row]++;
+        }
+    }
+
+    print_sudoku(sudoku_matrix);
+    return 0;
+}