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  1. using System;
  2. using System.Collections.Generic;
  3. public class Program
  4.     {
  5.         List<char[]> l;
  6.         Program()
  7.         {
  8.             l = new List<char[]>();
  9.         }
  10.         void swap(ref char a, ref char b)
  11.         {
  12.             if (a == b) return;
  13.             char tmp;
  14.             tmp = b;
  15.             b = a;
  16.             a = tmp;
  17.         }
  18.         public void go(char[] list, int k, int m)
  19.         {
  20.             int i;
  21.             if (k == m)
  22.             {
  23.                 Console.WriteLine(list);
  24.                 //if(!(l.Contains(list)))
  25.                 l.Add(list);
  26.             }
  27.             else
  28.                 for (i = k; i <= m; i++)
  29.                 {
  30.                     swap(ref list[k], ref list[i]);
  31.                     go(list, k + 1, m);
  32.                     swap(ref list[k], ref list[i]);
  33.                 }
  34.  
  35.         }
  36.         public void print_list()
  37.         {
  38.  
  39.             foreach (char[] a in l)
  40.                 Console.WriteLine(a);
  41.         }
  42.         static void Main(string[] args)
  43.         {
  44.             Console.Write("input= ");
  45.             string s = Console.ReadLine();
  46.             Program p = new Program();
  47.             char[] c = s.ToCharArray();
  48.             Console.WriteLine("output= ");
  49.             p.go(c,0,(c.Length-1));
  50.             p.print_list();
  51.             Console.ReadKey();
  52.  
  53.         }
  54.     }
Success #stdin #stdout 0.05s 24008KB
comments (?)
stdin
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123
stdout
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input= output= 
123
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https://ideone.com/x4664R
language:
C# (gmcs 5.20.1)
created:
9 years ago
visibility:
public

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