Solution to HackerRank's PlusMinus challenge: https://www.hackerrank.com/challenges/plus-minus/problem?isFullScreen=true

plusMinus.js

function plusMinus(arr) {
    // Write your code here
    let plusCount = 0;
    let minusCount = 0;
    let zeroCount = 0;
    const n = arr.length;
    
    for (const i of arr) {
        if(i < 0) minusCount++;
        if(i > 0) plusCount++;
        if(i === 0) zeroCount++;
    }
    
    
    console.log(`${(plusCount++/n).toPrecision(6)}\n${(minusCount++/n).toPrecision(6)}\n${(zeroCount++/n).toPrecision(6)}`)

}