anagramsBenchmark.js

const fetch = require('isomorphic-unfetch')
const { performance } = require('perf_hooks')

//Replace char function
function setCharAt(str,index,chr) {
    if(index > str.length-1) return str;
    return str.substr(0,index) + chr + str.substr(index+1);
}

//Check if they are the same
function elIsto (a,b){
    //Check length first
    if (a.length != b.length) return false

    for ( var i=0 ; i < a.length ; i++ ){
//        console.log( 'a=' + i )
        for ( var j= 0 ; j < b.length ; j++ ){
//            console.log( 'b=' + j )
//            console.log(b)
            if ( a[i] === b[j] ){
                b = setCharAt(b,j,'')
                break
            }
            else if ( j === (b.length - 1) ) return false
        }
    }

    return true
}

const isAnagram = (a, b) => {
    if (a.length !== b.length) {
        return false
    }

    return a.split('').sort().join('') === b.split('').sort().join('')
}

const original = 'darkotorbasinovic'
const getData = async () => {
    return (await fetch('https://pastebin.com/raw/8mm3sF46').then(res => res.text())).split(/\r?\n/).map(anagram => {
        return anagram.replace(/\s/g, '').toLowerCase() // remove all spaces and make everything lowercase
    })
}

const results = {
    elIsto: [],
    isAnagram: []
}

const averageResult = arr => arr.reduce((a,b) => a + b, 0) / arr.length
const sumResult = arr => arr.reduce((a,b) => a + b, 0)

getData().then(data => {
    for (let i = 0; i < 100; i += 1) {
        const elIsto0 = performance.now()
        data.forEach(anagram => elIsto(original, anagram))
        const elIsto1 = performance.now()
        results.elIsto.push(elIsto1 - elIsto0)

        const isAnagram0 = performance.now()
        data.forEach(anagram => isAnagram(original, anagram))
        const isAnagram1 = performance.now()
        results.isAnagram.push(isAnagram1 - isAnagram0)
    }

    console.log('elIsto')
    console.log('average', averageResult(results.elIsto), 'ms')
    console.log('min', Math.min(...results.elIsto), 'ms')
    console.log('max', Math.max(...results.elIsto), 'ms')
    console.log('total', sumResult(results.elIsto), 'ms')
    console.log('isAnagram')
    console.log('average', averageResult(results.isAnagram), 'ms')
    console.log('min', Math.min(...results.isAnagram), 'ms')
    console.log('max', Math.max(...results.isAnagram), 'ms')
    console.log('total', sumResult(results.isAnagram), 'ms')
})