-
Notifications
You must be signed in to change notification settings - Fork 0
/
java-arraylist.java
39 lines (32 loc) · 1.34 KB
/
java-arraylist.java
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
import java.io.*;
import java.util.*;
public class Solution {
public static void main(String[] args) {
Scanner scanner = new Scanner(System.in);
int n = scanner.nextInt();
scanner.skip("(\r\n|[\n\r\u2028\u2029\u0085])?");
ArrayList<ArrayList<Integer>> numbers = new ArrayList<ArrayList<Integer>>();
for (int i = 0; i < n; i++) {
String[] arrRowItems = scanner.nextLine().split(" ");
scanner.skip("(\r\n|[\n\r\u2028\u2029\u0085])?");
ArrayList<Integer> inputs = new ArrayList<Integer>();
for (int j = 0; j < arrRowItems.length; j++) {
inputs.add(Integer.parseInt(arrRowItems[j]));
}
numbers.add(inputs);
}
int read = scanner.nextInt();
scanner.skip("(\r\n|[\n\r\u2028\u2029\u0085])?");
for (int i = 0; i < read; i++) {
String[] queries = scanner.nextLine().split(" ");
scanner.skip("(\r\n|[\n\r\u2028\u2029\u0085])?");
int row = Integer.parseInt(queries[0]);
int column = Integer.parseInt(queries[1]);
if (row > numbers.size() || column >= numbers.get(row - 1).size()) {
System.out.println("ERROR!");
} else {
System.out.println(numbers.get(row - 1).get(column));
}
}
}
}