JavaProgramming/HackerRank/TwentySeven.java at patch-1 · subham500071430/JavaProgramming · GitHub

35 lines (24 loc) · 949 Bytes

//remove all duplicate word in the sentances

package HackerRank;

import java.util.Scanner;

import java.util.regex.Matcher;

import java.util.regex.Pattern;

public class TwentySeven {

public static void main(String[] args) {

String regex = "\\b(\\w+)(?:\\W+\\1\\b)+";

Pattern p = Pattern.compile(regex, Pattern.CASE_INSENSITIVE);

Scanner in = new Scanner(System.in);

int numSentences = Integer.parseInt(in.nextLine());

while (numSentences-- > 0) {

String input = in.nextLine();

Matcher m = p.matcher(input);

// Check for subsequences of input that match the compiled pattern

while (m.find()) {

input = input.replaceAll(m.group(), m.group(1));

}

// Prints the modified sentence.

System.out.println(input);

}

in.close();

}

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