Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;
//License from project: Open Source License 

import java.util.*;

public class Main {
    public static <T> boolean hasDuplicates(Collection<? extends T> xs) {
        HashSet<T> ys = new HashSet<>(xs.size());

        for (T x : xs)
            if (!ys.add(x))
                return true;

        return false;
    }
}