From e37a8c4e4369d28f268790ffe4ad0a5806cc4659 Mon Sep 17 00:00:00 2001
From: prim85cto <2926098536@stu.xjtu.edu.cn>
Date: Fri, 8 Nov 2024 17:45:14 +0800
Subject: [PATCH] ADD file via upload

---
 T2.cpp | 41 +++++++++++++++++++++++++++++++++++++++++
 1 file changed, 41 insertions(+)
 create mode 100644 T2.cpp

diff --git a/T2.cpp b/T2.cpp
new file mode 100644
index 0000000..f99c62a
--- /dev/null
+++ b/T2.cpp
@@ -0,0 +1,41 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <time.h>
+
+void print_matrix(int matrix[9][9]) {
+    int i,j;
+    for (i = 0; i < 9; i++) {
+        for (j = 0; j < 9; j++) {
+            printf("%d ", matrix[i][j]);
+        }
+        printf("\n");
+    }
+}
+
+int main() {
+    srand(time(NULL));
+    int matrix[9][9] = {0};
+    int i,j;
+    for (i = 0; i < 9; i += 3) {
+        int nums[9] = {1, 2, 3, 4, 5, 6, 7, 8, 9};
+        int flag1[9] = {0};
+        int flag2[9] = {0};
+        for(j=0;j<9;j++){
+            int t,p;
+            re1: t=rand()%9;
+            if(flag1[t]==1){
+                goto re1;}
+            re2: p=rand()%9;
+            if(flag2[p]==1){
+                goto re2;
+            }
+            matrix[i+j/3][p]=nums[t];
+            flag1[t]=1;
+            flag2[p]=1;
+            
+        }
+    }
+
+    print_matrix(matrix);
+    return 0;
+}