Java Subarray Hacker Rank Solution

Hello coders, In this post, you will learn how to solve Java Subarray 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.

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Java Subarray Hacker Rank Solution
Java Subarray- Hacker Rank Solution

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Java Subarray Hacker Rank Solution

Problem

We define the following:

  • subarray of an -element array is an array composed from a contiguous block of the original array’s elements. For example, if , then the subarrays are , , , , , and . Something like  would not be a subarray as it’s not a contiguous subsection of the original array.
  • The sum of an array is the total sum of its elements.
    • An array’s sum is negative if the total sum of its elements is negative.
    • An array’s sum is positive if the total sum of its elements is positive.

Given an array of  integers, find and print its number of negative subarrays on a new line.

Problem Statement; Click Here.



Java Subarray Hacker Rank Solution

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 sc = new Scanner(System.in);
    int length = sc.nextInt();
    int[] arr = new int[length];
    int first = sc.nextInt();
    arr[0] = first;
    int count = first < 0 ? 1 : 0;
    for (int i = 1; i < length; i++){
        int num = sc.nextInt();
        arr[i] = arr[i - 1] + num;
        if (arr[i] < 0){
            count++;
        }
        for (int j = 0; j < i; j++){
            int sub_result = arr[i] - arr[j];
            if (sub_result < 0){
                count++;
            }
        }
    }
    System.out.print(count);
    }
}

Disclaimer: The above Problem (Java Subarray) 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.

FAQ:

1. HackerRank Java All Problems Solutions

Hackerrank java problems solutions with practical program code examples and step-by-step full complete explanation.

2. Can HackerRank learn Java?

Welcome to the world of Java! In this challenge, we practice printing to stdout. The code stubs in your editor declare a Solution class and the main method. 

3. What is HackerRank Java test?

The HackerRank Skills Certification Test is a standardized assessment to help developers prove their coding skills.

4. Should I put HackerRank certificate on resume?

These certificates are useless, and you should not put them on your resume. The experience you gained from getting them is not useless. Use it to build a portfolio, and link to it on your resume. 

5. Can I retake HackerRank test?

The company which sent you the HackerRank Test invite owns your Test submissions and results. It’s their discretion to permit a reattempt for a particular Test. If you wish to retake the test, we recommend that you contact the concerned recruiter who invited you to the Test and request a re-invite

6. Can I learn Java per month?

you can’t master it in 1 month, it needs continuous hard work and experience. JAVA is a vast language even developers don’t know fully. you go in-depth about each particular class in java. Java is such a platform which have been used in all platform like android, web, and cloud so keep working on your interest. 

Where can I find HackerRank solutions in Java?

in this post you will get all the solutions of HackerRank java Problems.

Finally, we are now, in the end, I just want to conclude some important message for you

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