package com.zetcode;

import java.util.ArrayList;

import java.util.List;

import java.util.Objects;

//https://stackoverflow.com/questions/1075656/simple-way-to-find-if-two-different-lists-contain-exactly-the-same-elements?utm_medium=organic&utm_source=google_rich_qa&utm_campaign=google_rich_qa

public class CompareListsEx {

public static void main(String[] args) {

// Solution one

var words = List.of("dog", "pen", "sky", "rock");

var words2 = List.of("dog", "pen", "sky", "rock");

// O(n^2)

boolean equal = (words.size() == words2.size()) && words.containsAll(words2);

if (equal) {

System.out.println("Lists are equal");

} else {

System.out.println("Lists are not equal");

}

// Solution two

var listOne = new ArrayList<>(List.of("dog", "pen", "sky", "rock"));

var listTwo = new ArrayList<>(List.of("dog", "pen", "sky", "rock"));

listOne.retainAll(listTwo);

System.out.println(listOne);

// Solution three

var words3 = new ArrayList<String>();

var words4 = new ArrayList<String>();

words3.add("blue");

words3.add("green");

words3.add("red");

words3.add("yellow");

words4.add("blue");

words4.add("green");

words4.add("red");

words4.add("yellow");

if (Objects.equals(words3, words4)) {

System.out.println("Lists are equal");

} else {

System.out.println("Lists are not equal");

}

}

}