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  1. import java.util.*;
  2. import java.lang.*;
  3. import java.io.*;
  4.  
  5. class Ideone
  6. {
  7.     public static void main(String[] args) {
  8.         System.out.println(countYZ("fez day"));
  9.         System.out.println(countYZ("day fez"));
  10.         System.out.println(countYZ("day fyyyz"));
  11.     }
  12.  
  13.     public static int countYZ(String str) {
  14.         String regex = "([yYzZ](?![A-Za-z]))|.";
  15.         return str.toLowerCase().replaceAll(regex, "$1").length();
  16.     }
  17. }
Success #stdin #stdout 0.1s 48368KB
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https://ideone.com/GeKHOd
language:
Java (HotSpot 12)
created:
3 years ago
visibility:
secret

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