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  1. #include <algorithm>
  2. #include <string>
  3. #include <iostream>
  4.  
  5. int main()
  6. {
  7.     std::string str[4] = {"8563", "7385", "3857", "123"};
  8.  
  9.     for (size_t i = 0; i < 4; i++) {
  10.         std::string &s = str[i];
  11.  
  12.         if (std::prev_permutation(s.begin(), s.end())) {
  13.             std::cout << s << "\n";
  14.         } else {
  15.             std::cout << "None such!\n";
  16.         }
  17.     }
  18.  
  19.     return 0;
  20. }
  21.  
Success #stdin #stdout 0s 4408KB
comments (?)
stdin
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Standard input is empty
stdout
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8536
7358
3785
None such!
https://ideone.com/40YoNn
language:
C++ (gcc 8.3)
created:
5 years ago
visibility:
public

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