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In this post, you will find the solution for **Plus Minus** **in Java-HackerRank Problem**. We are providing the **correct and tested solutions** of coding problems present on **HackerRank**. If you are not able to solve any problem, then you can take help from our Blog/website.

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**Introduction To Algorithm**

The word **Algorithm** means “a process or set of rules to be followed in calculations or other problem-solving operations”. Therefore Algorithm refers to a set of rules/instructions that step-by-step define how a work is to be executed upon in order to get the expected results.

**Advantages of Algorithms:**

- It is easy to understand.
- Algorithm is a step-wise representation of a solution to a given problem.
- In Algorithm the problem is broken down into smaller pieces or steps hence, it is easier for the programmer to convert it into an actual program.

** Link for the Problem** – Plus Minus – Hacker Rank Solution

Plus Minus– Hacker Rank Solution

**Problem:**

Given an array of integers, calculate the ratios of its elements that are *positive*, *negative*, and *zero*. Print the decimal value of each fraction on a new line with places after the decimal.

**Note:** This challenge introduces precision problems. The test cases are scaled to six decimal places, though answers with absolute error of up to are acceptable.

**Example**

0.400000 0.400000 0.200000

**Function Description**

Complete the *plusMinus* function in the editor below.

plusMinus has the following parameter(s):

*int arr[n]*: an array of integers

**Print**

Print the ratios of positive, negative and zero values in the array. Each value should be printed on a separate line with digits after the decimal. The function should not return a value.

**Input Format**

The first line contains an integer, , the size of the array.

The second line contains space-separated integers that describe .

**Constraints**

**Output Format**

**Print** the following lines, each to decimals:

- proportion of positive values
- proportion of negative values
- proportion of zeros

**Sample Input**

STDIN Function ----- -------- 6 arr[] size n = 6 -4 3 -9 0 4 1 arr = [-4, 3, -9, 0, 4, 1]

**Sample Output**

0.500000 0.333333 0.166667

**Explanation**

Plus Minus – Hacker Rank Solution

import java.util.Scanner; /** * * @author Techno-RJ * */ public class PlusMinus { public static void main(String[] args) { Scanner in = new Scanner(System.in); int n = in.nextInt(); int arr[] = new int[n]; float countPositive = 0; float countNegetive = 0; float countZero = 0; for (int arr_i = 0; arr_i < n; arr_i++) { arr[arr_i] = in.nextInt(); if (arr[arr_i] < 0) { countNegetive++; } if (arr[arr_i] > 0) { countPositive++; } if (arr[arr_i] == 0) { countZero++; } } System.out.printf("%1.6f \n", countPositive / n); System.out.printf("%1.6f \n", countNegetive / n); System.out.printf("%1.6f \n", countZero / n); in.close(); } }

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