HackerRank 3 Months Preparation Kit(JavaScript) - Plus Minus

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 6 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 10 to the power -4 are acceptable.

Example
arr = [1,1,0,-1,-1]
There are n = 5 elements, two positive, two negative and one zero. Their ratios are 2/5, 2/5 and 1/5. Results are printed as:
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 6 digits after the decimal. The function should not return a value.

Input Format

The first line contains an integer, n, the size of the array.
The second line contains n space-separated integers that describe arr[n]

SOLUTION