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  1. #include <iostream>
  2. #include <vector>
  3. #include <unordered_map>
  4. #include <limits>
  5. int main() {
  6.     using namespace std;
  7.  
  8.     int n;
  9.     cout<<"Hello! How many numbers will you be entering?";
  10.     cin>>n;
  11.  
  12.     if(n<=0){
  13.         cout<<"Looks like there are no numbers to check. Goodbye!"<<endl;
  14.         return 0;}
  15.     vector<int> arr(n);
  16.     cout <<"Great, please enter your "<<n<<" numbers: "<<endl;
  17.     for (int i=0;i<n;++i) {
  18.         cin >> arr[i];
  19.     }
  20.     unordered_map<int, int> freqMap;
  21.     for (int number : arr) {
  22.         freqMap[number]++;
  23.     }
  24.     int maxFreq = 0;
  25.     int maxElement = 0;
  26.     int minFreq = numeric_limits<int>::max();
  27.     int minElement = 0;
  28.     for (auto const& [element, frequency] : freqMap) {
  29.         if (frequency>maxFreq) {
  30.             maxFreq=frequency;
  31.             maxElement=element;
  32.         }
  33.         if (frequency<minFreq) {
  34.             minFreq=frequency;
  35.             minElement=element;
  36.         }
  37.     }
  38.     cout <<"\n--- All done! Here's what I found ---"<<endl;
  39.     cout <<"The most frequent number is "<<maxElement<<", which appeared "<<maxFreq<<" times."<<endl;
  40.     cout <<"The least frequent number is "<<minElement<<", which appeared "<<minFreq<<" times."<<endl;
  41.     return 0;
  42. }
  43.  
  44.  
Success #stdin #stdout 0.01s 5312KB
comments (?)
stdin
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5
12
12
12
11
11
stdout
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Hello! How many numbers will you be entering?Great, please enter your 5 numbers: 

--- All done! Here's what I found ---
The most frequent number is 12, which appeared 3 times.
The least frequent number is 11, which appeared 2 times.
https://ideone.com/oRNCDt
language:
C++ (gcc 8.3)
created:
1 day ago
visibility:
public

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