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  1. #include <iostream>
  2. #include <string>
  3. #include <vector>
  4. using namespace std;
  5.  
  6. template <typename T, size_t array_size>
  7. inline void copy_array_to_vector(vector<T> &vec, T (&arr)[array_size]) {
  8.     vec.insert(vec.end(), &(arr[0]), &(arr[array_size]));
  9. }
  10.  
  11. template <typename T>
  12. inline void DFS_cascade_string(vector<string> &vec_str, vector<string> &DFS_vec_str, const vector<T>& vec) {
  13.     string str_tmp;
  14.     for (int i = 0; i < DFS_vec_str.size(); i++)
  15.         str_tmp += DFS_vec_str[i] + " ";
  16.  
  17.     for (int i = 0; i < vec.size(); i++)
  18.         vec_str.push_back(str_tmp + to_string(vec[i]));
  19. }
  20. template <typename T, typename ... ARGS>
  21. inline void DFS_cascade_string(vector<string> &vec_str, vector<string> &DFS_vec_str, const vector<T>& vec, const ARGS&... args) {
  22.  
  23.     for (int i = 0; i < vec.size(); i++) {
  24.         DFS_vec_str.push_back(to_string(vec[i]));
  25.         DFS_cascade_string(vec_str, DFS_vec_str, args...);
  26.         DFS_vec_str.pop_back();
  27.     }
  28.  
  29. }
  30. template <typename ... ARGS>
  31. inline void DFS_cascade_string(vector<string> &vec_str, const ARGS&... args) {
  32.     vector<string> DFS_vec_str;
  33.     DFS_cascade_string(vec_str, DFS_vec_str, args...);
  34. }
  35.  
  36.  
  37. int main() {
  38. 	// var1
  39.     vector<int> vec_var1;
  40.     int  local_var1[] = { 10, 20, 30, 40};
  41.     copy_array_to_vector(vec_var1, local_var1);
  42.  
  43.     // var2
  44.     vector<double> vec_var2;
  45.     double local_var2[] = { 44.0, 88.0 };
  46.     copy_array_to_vector(vec_var2, local_var2);
  47.  
  48.     // var3
  49.     vector<double> vec_var3;
  50.     double local_var3[] = { 0.0 };
  51.     copy_array_to_vector(vec_var3, local_var3);
  52.  
  53.     // var4
  54.     vector<double> vec_var4;
  55.     double local_var4[] = { 123.0, 150.0 };
  56.     copy_array_to_vector(vec_var4, local_var4);
  57.  
  58.  
  59. 	// ===============================================
  60. 	// test 1
  61.     vector<string> vec_str;
  62.     DFS_cascade_string(vec_str, vec_var1, vec_var2, vec_var3);
  63.     for (int i = 0; i < vec_str.size(); i++)
  64.         printf("[%d], %s\n", i, vec_str[i].c_str());
  65.  
  66.  
  67.     printf("\n======================\n\n");
  68.  
  69.     // test 2
  70.     vec_str.clear();
  71.     DFS_cascade_string(vec_str, vec_var1, vec_var2, vec_var3, vec_var4);
  72.     for (int i = 0; i < vec_str.size(); i++)
  73.         printf("[%d], %s\n", i, vec_str[i].c_str());
  74.  
  75.  
  76. 	return 0;
  77. }
Success #stdin #stdout 0s 4232KB
comments (?)
stdin 
Standard input is empty
stdout 
[0], 10 44.000000 0.000000
[1], 10 88.000000 0.000000
[2], 20 44.000000 0.000000
[3], 20 88.000000 0.000000
[4], 30 44.000000 0.000000
[5], 30 88.000000 0.000000
[6], 40 44.000000 0.000000
[7], 40 88.000000 0.000000

======================

[0], 10 44.000000 0.000000 123.000000
[1], 10 44.000000 0.000000 150.000000
[2], 10 88.000000 0.000000 123.000000
[3], 10 88.000000 0.000000 150.000000
[4], 20 44.000000 0.000000 123.000000
[5], 20 44.000000 0.000000 150.000000
[6], 20 88.000000 0.000000 123.000000
[7], 20 88.000000 0.000000 150.000000
[8], 30 44.000000 0.000000 123.000000
[9], 30 44.000000 0.000000 150.000000
[10], 30 88.000000 0.000000 123.000000
[11], 30 88.000000 0.000000 150.000000
[12], 40 44.000000 0.000000 123.000000
[13], 40 44.000000 0.000000 150.000000
[14], 40 88.000000 0.000000 123.000000
[15], 40 88.000000 0.000000 150.000000
https://ideone.com/isN5k0
cascade parameter with string by using DFS
language:
C++ (gcc 8.3)
created:
3 years ago
visibility:
secret

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