diff two String List and return a List - Java java.util

Java examples for java.util:List Compare

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Description

diff two String List and return a List

Demo Code


//package com.book2s;
import java.util.ArrayList;

import java.util.List;

public class Main {
    public static void main(String[] argv) {
        List list1 = java.util.Arrays.asList("asdf", "book2s.com");
        List list2 = java.util.Arrays.asList("asdf", "book2s.com");
        System.out.println(java.util.Arrays.toString(diff(list1, list2)));
    }//  w w w  . ja  v a 2 s  .  c o m

    public static List<String>[] diff(List<String> list1, List<String> list2) {
        if (list1 == null)
            list1 = new ArrayList<String>();
        if (list2 == null)
            list2 = new ArrayList<String>();

        List<String> toAddList = new ArrayList<String>();
        List<String> toDelList = new ArrayList<String>();

        for (String str1 : list1) {
            if (!list2.contains(str1)) {
                toAddList.add(str1);
            }
        }

        for (String str2 : list2) {
            if (!list1.contains(str2)) {
                toDelList.add(str2);
            }
        }

        return new List[] { toAddList, toDelList };
    }

    public static boolean contains(List<Long[]> higherPart,
            List<Long[]> lowerPart) {
        if (lowerPart.size() == 0 && higherPart.size() != 0)
            return true;

        for (int i = 0; i < lowerPart.size(); i++) {
            Long[] lPart = lowerPart.get(i);
            int j = 0;
            for (j = 0; j < higherPart.size(); j++) {
                Long[] hPart = higherPart.get(j);
                if (hPart[0] <= lPart[0] && hPart[1] >= lPart[1]) {
                    // higherTimePart?i?????
                    break;
                }
            }

            if (j == higherPart.size()) {
                // ?????
                return false;
            }

        }
        return true;
    }
}

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