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  1. #include <iostream>
  2. #include<bits/stdc++.h>
  3. using namespace std;
  4.  
  5. int main() {
  6. 	// your code goes here
  7.  
  8.  
  9. 	vector<vector<string>> res;
  10.     unordered_map<string, int> mp;
  11.  
  12.     vector<string> arr= {
  13.     	"1$0$1$0$0$0$0$0$0$0$0$0$0$0$0$0$0$0$0$1$0$0$0$0$0$0$",
  14.     " 0$0$0$1$0$0$1$0$0$0$0$0$0$0$1$0$0$0$0$0$0$0$0$0$0$0$", 
  15.     " 1$0$1$0$0$0$0$0$0$0$0$0$0$0$0$0$0$0$0$1$0$0$0$0$0$0$",
  16.     " 0$0$0$1$0$0$1$0$0$0$0$0$0$0$1$0$0$0$0$0$0$0$0$0$0$0$",
  17.     " 1$0$1$0$0$0$0$0$0$0$0$0$0$0$0$0$0$0$0$1$0$0$0$0$0$0$"
  18.     };
  19.  
  20.  
  21.     for (int i = 0; i < arr.size(); i++) {
  22.         string key = arr[i];
  23.  
  24.         // If key is not present in the hash map, add
  25.         // an empty group (vector) in the result and
  26.         // store the index of the group in hash map
  27.         if (mp.find(key) == mp.end()) {
  28.             mp[key] = res.size();
  29.             res.push_back({});
  30.         }
  31.  
  32.         // Insert the string in its correct group
  33.         res[mp[key]].push_back(arr[i]);
  34.  
  35.  
  36.          //cout<<res;
  37.     }
  38.  
  39.     for(int i = 0; i < res.size(); i++) {
  40.         for(int j = 0; j < res[i].size(); j++)
  41.             cout << res[i][j] << " ";
  42.  
  43.       //  cout<<res[i][0];
  44.         cout << "\n";
  45.     }
  46.  
  47.     //cout<<res;
  48.     //return res;
  49. 	return 0;
  50. }
Success #stdin #stdout 0s 5320KB
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stdin
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Standard input is empty
stdout
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1$0$1$0$0$0$0$0$0$0$0$0$0$0$0$0$0$0$0$1$0$0$0$0$0$0$ 
 0$0$0$1$0$0$1$0$0$0$0$0$0$0$1$0$0$0$0$0$0$0$0$0$0$0$  0$0$0$1$0$0$1$0$0$0$0$0$0$0$1$0$0$0$0$0$0$0$0$0$0$0$ 
 1$0$1$0$0$0$0$0$0$0$0$0$0$0$0$0$0$0$0$1$0$0$0$0$0$0$  1$0$1$0$0$0$0$0$0$0$0$0$0$0$0$0$0$0$0$1$0$0$0$0$0$0$
https://ideone.com/QALV6x
language:
C++ (gcc 8.3)
created:
1 day ago
visibility:
public

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