Java 1D Array Hacker Rank Solution

Hello coders, In this post, you will learn how to solve Java 1D Array Hacker Rank Solution. This problem is a part of the Java programming series. 

One more thing to add, don’t straight away look for the solutions, first try to solve the problems by yourself. If you find any difficulty after trying several times, then look for the solutions.

Java 1D Array Hacker Rank Solution
Java 1D Array Hacker Rank Solution

Java 1D Array Hacker Rank Solution


An array is a simple data structure used to store a collection of data in a contiguous block of memory. Each element in the collection is accessed using an index, and the elements are easy to find because they’re stored sequentially in memory.

Because the collection of elements in an array is stored as a big block of data, we typically use arrays when we know exactly how many pieces of data we’re going to have. For example, you might use an array to store a list of student ID numbers, or the names of state capitals. To create an array of integers named  that can hold four integer values, you would write the following code:

int[] myArray = new int[4];

This sets aside a block of memory that’s capable of storing  integers. Each integer storage cell is assigned a unique index ranging from  to one less than the size of the array, and each cell initially contains a . In the case of , we can store integers at indices , , , and . Let’s say we wanted the last cell to store the number ; to do this, we write:

myArray[3] = 12;

Similarly, we can print the contents of the last cell with the following code:


The code above prints the value stored at index  of , which is  (the value we previously stored there). It’s important to note that while Java initializes each cell of an array of integers with a , not all languages do this.


The code in your editor does the following:

  1. Reads an integer from stdin and saves it to a variable, , denoting some number of integers.
  2. Reads  integers corresponding to  from stdin and saves each integer  to a variable, .
  3. Attempts to print each element of an array of integers named .

Write the following code in the unlocked portion of your editor:

  1. Create an array, , capable of holding  integers.
  2. Modify the code in the loop so that it saves each sequential value to its corresponding location in the array. For example, the first value must be stored in , the second value must be stored in , and so on.

Good luck!

Input Format

The first line contains a single integer, , denoting the size of the array.
Each line  of the  subsequent lines contains a single integer denoting the value of element .

Output Format

You are not responsible for printing any output to stdout. Locked code in the editor loops through array  and prints each sequential element on a new line.

Sample Input


Sample Output



When we save each integer to its corresponding index in , we get . The locked code prints each array element on a new line from left to right.

Java 1D Array Hacker Rank Solution

import java.util.*;
public class Solution {
    public static void main(String[] args) {
        Scanner scan = new Scanner(;
        int n = scan.nextInt();
int[]a=new int[n];
//inserting values at each ith indices
for(int i=0;i<n;i++)
        // Prints each sequential element in array a
        for (int i = 0; i < a.length; i++) {

Disclaimer: The above Problem (Java 1D Array) is generated by Hackerrank but the Solution is Provided by Chase2Learn. This tutorial is only for Educational and Learning purposes. Authority if any of the queries regarding this post or website fill the following contact form thank you.

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