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  1. #include <vector>
  2. #include <iostream>
  3. #include <algorithm> // Required for count()
  4. using namespace std;
  5.  
  6. vector<int> oddOnesOut(const vector<int>& numbers) {
  7.   vector<int> ans;
  8.   for(auto& num : numbers) {
  9.     if(count(numbers.begin(), numbers.end(), num) % 2 == 0) {
  10.       ans.push_back(num);
  11.     }
  12.   }
  13.   return ans;
  14. }
  15.  
  16. int main() {
  17.   // Test cases
  18.   vector<int> test1 = {1, 2, 3, 1, 3, 3};
  19.   vector<int> test2 = {1, 1, 2, 2, 3, 3, 4, 4};
  20.   vector<int> test3 = {1, 2, 2, 3, 3, 3, 4, 4, 4, 4};
  21.  
  22.   auto printVector = [](const vector<int>& v) {
  23.     cout << "{ ";
  24.     for(int num : v) cout << num << " ";
  25.     cout << "}";
  26.   };
  27.  
  28.   // Test 1
  29.   vector<int> result1 = oddOnesOut(test1);
  30.   cout << "Test 1: Input "; printVector(test1); 
  31.   cout << " => Output "; printVector(result1);
  32.   cout << endl;  // Expected: {1 1}
  33.  
  34.   // Test 2
  35.   vector<int> result2 = oddOnesOut(test2);
  36.   cout << "Test 2: Input "; printVector(test2);
  37.   cout << " => Output "; printVector(result2);
  38.   cout << endl;  // Expected: {1 1 2 2 3 3 4 4}
  39.  
  40.   // Test 3
  41.   vector<int> result3 = oddOnesOut(test3);
  42.   cout << "Test 3: Input "; printVector(test3);
  43.   cout << " => Output "; printVector(result3);
  44.   cout << endl;  // Expected: {2 2 4 4 4 4}
  45.  
  46.   return 0;
  47. }
Success #stdin #stdout 0s 5288KB
comments (?)
stdin 
Standard input is empty
stdout 
Test 1: Input { 1 2 3 1 3 3 } => Output { 1 1 }
Test 2: Input { 1 1 2 2 3 3 4 4 } => Output { 1 1 2 2 3 3 4 4 }
Test 3: Input { 1 2 2 3 3 3 4 4 4 4 } => Output { 2 2 4 4 4 4 }
https://ideone.com/Xb5wNh
language:
C++14 (gcc 8.3)
created:
13 days ago
visibility:
public

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