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  1. #define ARRAY_SIZE 10000000
  2.  
  3. void randomize(vector<int> &arr) {
  4.     double fillRatio = 0.004;
  5.  
  6.     mt19937 mt(time(0));
  7.  
  8.     iota(arr.begin(), arr.end(), 0);
  9.     fill_n(arr.begin(), ARRAY_SIZE*fillRatio, mt()%ARRAY_SIZE);
  10.  
  11.     shuffle(arr.begin(), arr.end(), mt);
  12. }
Compilation error #stdin compilation error #stdout 0s 0KB
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stdin
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Standard input is empty
compilation info 
prog.cpp:3:16: error: variable or field ‘randomize’ declared void
 void randomize(vector<int> &arr) {
                ^~~~~~
prog.cpp:3:16: error: ‘vector’ was not declared in this scope
prog.cpp:3:23: error: expected primary-expression before ‘int’
 void randomize(vector<int> &arr) {
                       ^~~
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Standard output is empty
https://ideone.com/eKTw0z
language:
C++ (gcc 8.3)
created:
5 years ago
visibility:
secret

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