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  1. #include <iostream>
  2. #include <math.h>
  3. #include <stdlib.h>
  4. #include <sstream>
  5. #include <bits/stdc++.h>
  6. #include <string>
  7. #include <string.h>
  8. #include <vector>
  9. #include <sstream>
  10. #include <stdio.h>
  11. #include <time.h>
  12. #include <algorithm>
  13. #include <iterator>
  14. using namespace std;
  15.  
  16.  
  17. void printvector(vector<vector<int>> v){
  18.     for(int i=0;i<v.size();i++)       
  19.     {
  20.         for(int j=0;j<v[i].size();j++)
  21.         {
  22.             cout<<v[i][j]<<" ";
  23.         }
  24.         cout << endl;
  25.     }
  26. }
  27.  
  28. void dfs(int layer,int time,vector<int> &arrangement,bool* visited,vector<int> candidate,vector<vector<int>> &path){
  29.     if (layer == time){
  30.         /*for (int i = 0; i < time; i++){
  31.             cout << arrangement[i] << "\t";
  32.         }
  33.         cout << endl;
  34.         */
  35.         path.push_back(arrangement);
  36.         //for(int i=0; i<path.size(); i++) cout << path.at(i) << " ";
  37.         return;
  38.     }
  39.     for (int i = 0; i < time; i++){
  40.         if (visited[i]){
  41.             continue;
  42.         }
  43.         visited[i] = true;
  44.         arrangement.resize(layer+1);
  45.         arrangement.at(layer) = candidate[i];
  46.         dfs(layer + 1,time,arrangement,visited,candidate,path);
  47.         visited[i] = false;
  48.     }
  49. }
  50.  
  51. //窮舉
  52. vector<vector<int>> generate_path(vector<int> candidate,int time){
  53.  
  54.     vector<vector<int>>path;
  55.     bool visited[time] = {false};
  56.     vector<int> arrangement;
  57.     dfs(0,time,arrangement,visited,candidate,path);
  58.     return path;
  59.     //path.push_back(dfs(0,time,arrangement,visited,candidate));
  60.     //for(int i=0; i<path.size(); i++) cout << path.at(i) << " ";
  61.  
  62. }
  63.  
  64. int main()
  65. {
  66. 	   vector<int> candidate;
  67.     candidate.push_back(10105);
  68.     candidate.push_back(10732);
  69.     candidate.push_back(10865);
  70.     //vector<vector<int>>path;
  71.     vector<vector<int>>v;
  72.     v=generate_path(candidate,3);
  73.     printvector(v);
  74. }
Success #stdin #stdout 0s 4160KB
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stdin
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Standard input is empty
stdout
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10105 10732 10865 
10105 10865 10732 
10732 10105 10865 
10732 10865 10105 
10865 10105 10732 
10865 10732 10105
https://ideone.com/ftGnHc
language:
C++14 (gcc 8.3)
created:
7 years ago
visibility:
public

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