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  1. #include <iostream>
  2. #include <vector>
  3. #include <random>
  4. #include <ctime>
  5.  
  6. // Function to perform Fisher-Yates Shuffle in place
  7. void fisherYatesShuffle(std::vector<int>& arr) {
  8.     // Initialize random number generator
  9.     std::mt19937 rng(static_cast<long unsigned int>(time(0))); // Random seed based on time
  10.  
  11.     // Loop through the array from last element to the second element
  12.     for (int i = arr.size() - 1; i > 0; --i) {
  13.         // Generate a random index between 0 and i
  14.         std::uniform_int_distribution<int> dist(0, i);
  15.         int j = dist(rng);
  16.  
  17.         // Swap the elements at index i and index j
  18.         std::swap(arr[i], arr[j]);
  19.     }
  20. }
  21.  
  22. int main() {
  23.     // Create a vector (array) of song IDs
  24.     std::vector<int> arr = {10, 20, 30, 40, 50};
  25.  
  26.     std::cout << "Original Array: ";
  27.     for (int num : arr) {
  28.         std::cout << num << " ";
  29.     }
  30.     std::cout << "\n";
  31.  
  32.     // Shuffle the array using Fisher-Yates
  33.     fisherYatesShuffle(arr);
  34.  
  35.     std::cout << "Shuffled Array: ";
  36.     for (int num : arr) {
  37.         std::cout << num << " ";
  38.     }
  39.     std::cout << "\n";
  40.  
  41.     return 0;
  42. }
  43.  
Success #stdin #stdout 0.01s 5320KB
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stdin
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Standard input is empty
stdout
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Original Array: 10 20 30 40 50 
Shuffled Array: 10 40 50 20 30
https://ideone.com/UOkAC2
language:
C++14 (gcc 8.3)
created:
3 days ago
visibility:
public

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