HackerRank Java Arrays- Dynamic Array
https://www.hackerrank.com/challenges/dynamic-array/problem?isFullScreen=true&h_r=next-challenge&h_v=zen
- import java.util.Scanner;
- import java.util.ArrayList;
-
- public class Solution {
- public static void main(String[] args) {
- Scanner scan = new Scanner(System.in);
- int N = scan.nextInt();
- int Q = scan.nextInt();
- int lastAns = 0;
-
- /* Create 2-D ArrayList */
- ArrayList<ArrayList<Integer>> lists = new ArrayList();
- for (int i = 0; i < N; i++) {
- lists.add(new ArrayList<Integer>());
- }
-
- /* Perform Q Queries */
- for (int i = 0; i < Q; i++) {
- int q = scan.nextInt();
- int x = scan.nextInt();
- int y = scan.nextInt();
- ArrayList<Integer> seq = lists.get((x ^ lastAns) % N);
- if (q == 1) {
- seq.add(y);
- } else if (q == 2) {
- lastAns = seq.get(y % seq.size());
- System.out.println(lastAns);
- }
- }
-
- scan.close();
- }
- }