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  1. Prepare
  2. Regex
  3. Assertions
  4. Positive Lookahead
  5. Discussions

Positive Lookahead

  • preethiannjacob
     + 0 comments

    Java 15

    import java.io.*;
import java.util.*;
import java.util.regex.Pattern;
import java.util.regex.Matcher;
public class Solution {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        Pattern pattern = Pattern.compile("o(?=oo)");
        Matcher matcher = pattern.matcher(scanner.nextLine());
        int count = 0;
        while(matcher.find())   count++;
        System.out.println("Number of matches : "+count);
    }
}