HackerRank Java- Arraylist
You are given n lines. In each line there are zero or more integers. You need to answer a few queries where you need to tell the number located in yth position of xth line.
Take your input from System.in.
- import java.io.*;
- import java.util.*;
- import java.text.*;
- import java.math.*;
- import java.util.regex.*;
-
- public class Solution {
-
- public static void main(String[] args) {
- Scanner in = new Scanner(System.in);
- ArrayList<ArrayList<Integer>> rows = new ArrayList<>();
-
- int n = in.nextInt();
- for (int i = 0; i < n; i++) {
- int m = in.nextInt();
- ArrayList<Integer> row = new ArrayList<>();
-
- for (int j = 0; j < m; j++) {
- row.add(in.nextInt());
- }
- rows.add(row);
- }
-
- n = in.nextInt();
- for (int i = 0; i < n; i++) {
- int x = in.nextInt();
- int y = in.nextInt();
- try {
- System.out.println(rows.get(x - 1).get(y - 1));
- } catch (Exception e) {
- System.out.println("ERROR!");
- }
- }
- }
- }
Please click on the like button if it worked
Solution not working or have any suggestions? Please send an email to [email protected]
