'commit'

2025-08-30 18:35:01 +08:00
commit 1f397eca87
6258 changed files with 1487241 additions and 0 deletions
--- a/C++专题课程/全排列/AllPermutation.cpp
+++ b/C++专题课程/全排列/AllPermutation.cpp
@@ -0,0 +1,56 @@
+#include <iostream>
+#include <cstring>
+
+//ȫ<><C8AB><EFBFBD>д<EFBFBD><D0B4><EFBFBD>˵<EFBFBD><CBB5>   
+
+// https://www.jianshu.com/p/e0de4c9b73f2?utm_campaign=maleskine&utm_content=note&utm_medium=seo_notes&utm_source=recommendation
+
+using namespace std;
+
+//<2F><>[from, to]<5D><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ƿ<EFBFBD><C7B7><EFBFBD><EFBFBD>ַ<EFBFBD><D6B7><EFBFBD><EFBFBD>±<EFBFBD>Ϊfrom<6F><6D><EFBFBD>ַ<EFBFBD><D6B7><EFBFBD><EFBFBD><EFBFBD>  
+bool IsSwap(char* from, char* to)
+{
+    char* p;
+    for(p = from; p < to; p++)
+    {
+        if(*p == *to)
+            return false;   
+    }   
+    return true;
+} 
+
+void AllPermutation(char* perm, int from, int to)
+{
+    if(from > to)
+        return;
+            
+    if(from == to)     //<2F><>ӡ<EFBFBD><D3A1>ǰ<EFBFBD><C7B0><EFBFBD><EFBFBD> 
+    {
+        static int count = 1;    //<2F>ֲ<EFBFBD><D6B2><EFBFBD>̬<EFBFBD><CCAC><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ͳ<EFBFBD><CDB3>ȫ<EFBFBD><C8AB><EFBFBD>еĸ<D0B5><C4B8><EFBFBD>  
+        cout << count++ << ":" << perm;
+        cout << endl;
+    }
+    if(from < to)     //<2F>õݹ<C3B5>ʵ<EFBFBD><CAB5>ȫ<EFBFBD><C8AB><EFBFBD><EFBFBD> 
+    {
+        for(int j = from; j <= to; j++)    //<2F><>j<EFBFBD><6A><EFBFBD>ַ<EFBFBD><D6B7>ֱ<EFBFBD><D6B1><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ַ<EFBFBD><D6B7><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ܵõ<DCB5><C3B5>µ<EFBFBD><C2B5><EFBFBD><EFBFBD><EFBFBD>
+        {
+            if(IsSwap((perm + j), (perm + to)))
+            {
+                swap(perm[j], perm[from]);
+                //cout<<0;
+                AllPermutation(perm, from + 1, to);
+                //cout<<1;
+                swap(perm[j], perm[from]);
+                //cout<<2;
+            }
+        }
+    }
+}
+
+int main()
+{
+    char str[100];
+    cin >> str;
+    AllPermutation(str, 0, strlen(str) - 1);
+    return 0;
+}