CodeRankGPT -
An AI Assistant for your coding test. Make sure to get hired 🎯
The program is designed to handle a problem where the user needs to input a series of lists, and then make queries to retrieve specific elements from these lists. If the queried element does not exist, the program will output an error message.
An AI Assistant for your coding test. Make sure to get hired 🎯
CodeRankGPT is a tool powered by GPT-4 that quietly assists you during your coding interview, providing the solutions you need.
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The solution approach involves using a Scanner to read the user's input. The number of lists and their contents are read first, followed by the number of queries. Each query specifies a list and an element index. The program then attempts to retrieve and print the specified element from the specified list. If the element does not exist (i.e., if the list or index is out of bounds), an exception is caught and an error message is printed.
/**
*
*/
package com.javaaid.hackerrank.solutions.languages.java.datastructures;
import java.util.ArrayList;
import java.util.List;
import java.util.Scanner;
/**
*
*/
public class JavaArraylist {
public static void main(String[] args) {
Scanner sc = new Scanner(System.in);
List> listOfList = new ArrayList>();
int n = sc.nextInt();
for (int i = 0; i < n; i++) {
int m = sc.nextInt();
ArrayList list = new ArrayList();
for (int j = 0; j < m; j++) {
list.add(sc.nextInt());
}
listOfList.add(list);
}
int q = sc.nextInt();
for (int k = 0; k < q; k++) {
int r = sc.nextInt();
int c = sc.nextInt();
try {
int v = listOfList.get(r - 1).get(c - 1);
System.out.println(v);
} catch (Exception e) {
System.out.println("ERROR!");
}
}
sc.close();
}
}
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