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  1. #include <iostream>
  2. using namespace std;
  3.  
  4. bool isValidWord(const string& word) {
  5.     int frqLetters['z' + 1] = {0};
  6.     const int lenWord = (int)word.size();
  7.     for (int i = 0; i < lenWord; ++i) {
  8.         ++frqLetters[(int)word[i]];
  9.         if (frqLetters[(int)word[i]] > 1) {
  10.             return false;
  11.         }
  12.     }
  13.     return true;
  14. }
  15.  
  16. int main() {
  17.     string text, longestWord;
  18.     while (getline(cin, text)) {
  19.         string currWord;
  20.         const int lenText = (int)text.size();
  21.         for (int i = 0; i <= lenText; ++i) {
  22.             if (isalpha(text[i])) {
  23.                 currWord += text[i];
  24.             } else if (!currWord.empty()) {
  25.                 if ((isValidWord(currWord) && (int)currWord.size() > (int)longestWord.size()) ||
  26.                     ((int)currWord.size() == (int)longestWord.size() && currWord < longestWord)) {
  27.                     longestWord = currWord;
  28.                 }
  29.                 currWord.clear();
  30.             }
  31.         }
  32.     }
  33.     if (longestWord.empty()) {
  34.         cout << "Ist nicht vorhanden!";
  35.     } else {
  36.         cout << longestWord;
  37.     }
  38.     return 0;
  39. }
  40.  
  41.  
Success #stdin #stdout 0.01s 5292KB
comments (?)
stdin
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Aabcadefg…abcd
!xyzd!!! xyxzd
stdout
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abcd
https://ideone.com/BTzQis
language:
C++ (gcc 8.3)
created:
13 days ago
visibility:
public

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