From 4022e5c95210631e4aceb08eaf9d9071aa5aefc4 Mon Sep 17 00:00:00 2001
From: Richard Qin <richard.qin.001@gmail.com>
Date: Tue, 15 Sep 2026 08:16:43 +0800
Subject: Set up a git repo

---
 tests/upload/digui2.sy | 42 ++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 42 insertions(+)
 create mode 100644 tests/upload/digui2.sy

(limited to 'tests/upload/digui2.sy')

diff --git a/tests/upload/digui2.sy b/tests/upload/digui2.sy
new file mode 100644
index 0000000..6d05666
--- /dev/null
+++ b/tests/upload/digui2.sy
@@ -0,0 +1,42 @@
+int n;
+int a[10];
+int v[10];
+
+void DFS(int p)
+{
+	int i=0;
+	if(p==n){//边界 
+		putarray(n, a);
+		putch(10);
+		return;
+	}
+	while (i<n) { //枚举0->n-1(实际是1->n)这些数 v[i]标志这个数是否被访问过 
+		if(v[i]==1) {
+			i = i+1;
+			continue;
+		}
+		v[i]=1;
+		a[p]=i;//p代表位置 每次给一个位置找值 
+		DFS(p+1);
+		v[i]=0;//回溯 
+		i = i+1;
+	}
+}
+
+int main()
+{
+	int i;
+	while(1){
+		n = getint();
+		if(n==0) {
+			break;
+		}
+		i=0;
+		while (i<10){
+			v[i]=0;
+			i=i+1;
+		}
+		DFS(0);
+	}
+	return 0;
+}
-- 
cgit v1.2.3