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/******************************************************************************
Online Java Compiler.
Code, Compile, Run and Debug java program online.
Write your code in this editor and press "Run" button to execute it.
*******************************************************************************/
import java.util.*;
public class Main
{
public static String simplify(String... arr) {
return Arrays.stream(arr).reduce("", (s1, s2) -> s1 +
(s1.isEmpty() ? s2 : s2.replaceAll("[" + s1 + "]", "")));
}
public static void main(String[] args) {
System.out.println(simplify("abcdef", "fghij"));
System.out.println(simplify("abcdef", "fghij", " jklmn"));
}
}
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