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JAVA was developed by James Gosling at Sun Microsystems Inc in the year 1991, later acquired by Oracle Corporation. It is a simple programming language. Java makes writing, compiling, and debugging programming easy. It helps to create reusable code and modular programs.
Java is a class-based, object-oriented programming language and is designed to have as few implementation dependencies as possible. A general-purpose programming language made for developers to write once run anywhere that is compiled Java code can run on all platforms that support Java. Java applications are compiled to byte code that can run on any Java Virtual Machine. The syntax of Java is similar to c/c++.
Link for the Problem – Java Subarray – Hacker Rank Solution
Java Subarray – Hacker Rank Solution
Problem :
We define the following:
- A 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); } }
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