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  1. #include <cstring>
  2. #include <iostream>
  3. #include<algorithm>
  4. using namespace std;
  5. int main()
  6. {
  7. 	srand(time(NULL));
  8. 	string my_str = "abcd";
  9.     cout << "Initial string: " << my_str << endl;
  10.     const char* letters = my_str.c_str();
  11.     char x = letters[rand() % strlen(letters)];
  12.     my_str.erase(remove(my_str.begin(), my_str.end(), x), my_str.end());
  13.     cout << "Final string: " << my_str << '\n';
  14.     sort(my_str.begin(), my_str.end()); 
  15.     do {          
  16.          cout << my_str << '\n';
  17.       } while (next_permutation(my_str.begin(), my_str.end()));
  18.       int n = my_str.length();
  19.       int count = 1, i;
  20.       for (i = 1; i <= n; i++)
  21.           count = count * i;
  22.       cout << count;
  23.     return 0;
  24.  
  25. }	
  26.  
  27.  
Success #stdin #stdout 0.01s 5292KB
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stdin
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Standard input is empty
stdout
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Initial string: abcd
Final string: abc
abc
acb
bac
bca
cab
cba
6
https://ideone.com/nId8QV
language:
C++14 (clang 8.0)
created:
1 day ago
visibility:
public

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