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Mar 20th, 2018
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  1. #include <time.h>
  2. #include <algorithm>
  3. #include <random>
  4. #include <vector>
  5. #include <iostream>
  6. #include <fstream>
  7. #include <string>
  8. #include <unordered_map>
  9. #include <map>
  10. using namespace std;
  11.  
  12. int main() {
  13.   ifstream file;
  14.   file.open("words.txt");
  15.   vector<string> v;
  16.   v.reserve(10000);
  17.   string x;
  18.   while(file >> x)
  19.     v.push_back(x);
  20.   random_shuffle(begin(v),end(v));
  21.   unordered_map<string, int> umap;
  22.   map<string, int> map;
  23.   clock_t tumap, tmap, t;
  24.   for(int i=0;i<v.size();i++){
  25.     t=clock();
  26.     umap[v[i]]=i;
  27.     tumap+=clock()-t;
  28.     t=clock();
  29.     map[v[i]]=i;
  30.     tmap+=clock()-t;
  31.   }
  32.   cout<< tumap/v.size() << " " << tmap/v.size() << endl;
  33.   tumap=0;
  34.   tmap=0;
  35.   for(int i=0;i<v.size();i++){
  36.     t=clock();
  37.     umap.find(v[i]);
  38.     tumap+=clock()-t;
  39.     t=clock();
  40.     map.find(v[i]);
  41.     tmap+=clock()-t;
  42.   }
  43.   cout<< tumap/v.size() << " " << tmap/v.size()<< endl;
  44.   return 0;
  45. }
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