JavaLessons/12-3_MergeAndHandling.java at master · LoveMyDaughter/JavaLessons · GitHub

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package lesson12;

/*_à Äàíû äâà ìàññèâà : À[n] è B[m]. Íåîáõîäèìî ñîçäàòü òðåòèé ìàññèâ, â êîòîðîì íóæíî ñîáðàòü:
	1. Ýëåìåíòû îáîèõ ìàññèâîâ;
	2. Îáùèå ýëåìåíòû äâóõ ìàññèâîâ;
	3. Ýëåìåíòû ìàññèâà A, êîòîðûå íå âêëþ÷àþòñÿ â B;
	4. Ýëåìåíòû ìàññèâà B, êîòîðûå íå âêëþ÷àþòñÿ â A;
	5. Ýëåìåíòû ìàññèâîâ A è B, êîîòðûå íå ÿâëÿþòñÿ îáùèìè äÿë íèõ (òî åñòü îáúåäèíåíèå ðåçóëüòàòîâ äâóõ ïðåäûäóùèõ âàðèàíòîâ).
*/


import java.util.ArrayList;

public class MergeAndHandling {

	public static void main(String[] args) {

		//_à Âõîäàùèå ñïèñêè aList è bList
		ArrayList <Integer> aList = new ArrayList();
		ArrayList <Integer> bList = new ArrayList();

		//_à Èñõîäÿùèå ñïèñêè
		ArrayList <Integer> outList = new ArrayList();
		ArrayList <Integer> cloneList;

		//_à Íàïîëíÿåì aList
		aList.add(15);	aList.add(-8); aList.add(2); aList.add(1); aList.add(-25); aList.add(4); aList.add(9);


		//_à Íàïîëíÿåì bList
		bList.add(10); bList.add(2); bList.add(-2); bList.add(1);  bList.add(-5); bList.add(17); bList.add(7); bList.add(3); bList.add(15);


		//_à Ïîêàçàòü ñïèñêè
		System.out.println("Ïåðâûé ñïèñîê: \n" + aList);
     	//System.out.println("Êîëè÷åñòâî ýëåìåíòîâ = " + aList.size());

		System.out.println("Âòîðîé ñïèñîê: \n" + bList);
		//System.out.println("Êîëè÷åñòâî ýëåìåíòîâ = " + bList.size());


		//_à Îáúåäèíÿåì ñïèñîê bList è aList
		cloneList = (ArrayList)aList.clone();
		cloneList.addAll(bList);

		System.out.println("1. Ýëåìåíòû îáîèõ ñïèñêîâ âìåñòå: \n" +cloneList);


		//_à Îáùèå ýëåìåíòû îáîèõ ñïèñêîâ
		cloneList = (ArrayList)aList.clone();
		cloneList.retainAll(bList);
		System.out.println("2. Îáùèå ýëåìåíòû îáîèõ ñïèñêîâ: \n" + cloneList);


		//_à Ýëåìåíòû aList, êîòîðûå íå âêëþ÷àþòñÿ â bList
		cloneList.clear();

		for (int i=0; i<aList.size(); i++) {

				if (! bList.contains(aList.get(i)))
					cloneList.add(aList.get(i));

		}
		System.out.println("3. Ýëåìåíòû aList, êîòîðûå íå âêëþ÷àþòñÿ â bList: \n" +cloneList);


		//_à Ýëåìåíòû bList, êîòîðûå íå âêëþ÷àþòñÿ â aList
		cloneList.clear();

		for (int i=0; i<bList.size(); i++) {

			if (! aList.contains(bList.get(i)) )
					cloneList.add(bList.get(i));

		}
		System.out.println("4. Ýëåìåíòû bList, êîòîðûå íå âêëþ÷àþòñÿ â aList: \n" + cloneList);


		//_à Ýëåìåíòû aList è bList, êîòîðûå íå ÿâëÿþòñÿ îáùèìè
		for (int i=0; i<aList.size(); i++) {

			for (int j=0; j<bList.size(); j++) {

				if (bList.get(j)==aList.get(i)) {
					bList.remove(j);
					aList.remove(i);
				}
			}
		}

		outList.addAll(aList);
		outList.addAll(bList);
		System.out.println("5. Ýëåìåíòû aList è bList, êîòîðûå íå ÿâëÿþòñÿ îáùèìè: \n" +outList);
		System.out.println();


	}

}