merge Varargs of list - Java java.util

Java examples for java.util:List Operation

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Description

merge Varargs of list

Demo Code


//package com.java2s;
import java.util.*;

public class Main {
    public static void main(String[] argv) {
        List many = java.util.Arrays.asList("asdf", "java2s.com");
        System.out.println(merge(many));
    }/*from w  ww . ja v a 2 s  .c  om*/

    public static <T> List<T> merge(List<T>... many) {
        ArrayList<T> ret = new ArrayList();
        for (List<T> list : many) {
            if (list != null) {
                for (T val : list) {
                    if (!ret.contains(val)) {
                        ret.add(val);
                    }
                }
            }
        }
        ret.trimToSize();
        return ret;
    }

    public static <T> List<T> merge(T[]... many) {
        ArrayList<T> ret = new ArrayList();
        for (T[] list : many) {
            if (list != null) {
                for (T val : list) {
                    if (!ret.contains(val)) {
                        ret.add(val);
                    }
                }
            }
        }
        ret.trimToSize();
        return ret;
    }
}

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