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  1. #include <iostream>
  2. #include <string>
  3. using namespace std;
  4.  
  5. void createFrqArr(int frq[], const string &text) {
  6.     for (char c : text) {
  7.         if (islower(c)) {
  8.         	cout << c << " ";
  9.             ++frq[c];
  10.         }
  11.     }
  12. }
  13.  
  14. bool isPalindrome(const int frqLetters[]) {
  15.     int cntOddFrq = 0;
  16.     for (int c = 'a'; c <= 'z'; ++c) {
  17.         if (frqLetters[c] % 2) {
  18.             ++cntOddFrq;
  19.         }
  20.     }
  21.     return cntOddFrq <= 1;
  22. }
  23.  
  24. char findMostFrqLetter(int frqLetters[]) {
  25.     char mostFrqLetter = 'z';
  26.     for (int c = 'z'; c >= 'a'; --c) {
  27.         if (frqLetters[c] > frqLetters[mostFrqLetter]) {
  28.             mostFrqLetter = (char)c;
  29.             frqLetters[mostFrqLetter] = frqLetters[c];
  30.         }
  31.     }
  32.     return mostFrqLetter;
  33. }
  34.  
  35. int main() {
  36.     string text;
  37.     int frqLetters['z' + 1] = {0};
  38.     while (getline(cin, text)) {
  39.         createFrqArr(frqLetters, text);
  40.     }
  41.     cout << "\n";
  42.     if (isPalindrome(frqLetters)) {
  43.         cout << "DA\n" << findMostFrqLetter(frqLetters);
  44.     } else {
  45.         cout << "NU";
  46.     }
  47.     return 0;
  48. }
  49.  
Success #stdin #stdout 0.01s 5288KB
comments (?)
stdin
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rAr..aA(d)a1A
stdout
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r r a d a 
DA
r
https://ideone.com/GDYfxC
language:
C++ (gcc 8.3)
created:
1 day ago
visibility:
public

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