speedtest for various JS implementations for Project Euler problem 87

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ikselven 2017-04-02 16:23:08 +02:00
parent 65fbff74b7
commit ea39864af6

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2017-03-14/speedtest.js Normal file
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// speedtest script for project euler exercise 87
// can be run from cli (V8 or SpiderMonkey 45+) or browser
'use strict';
function isPrime(num) {
if (num === 3) {
return true;
}
if (num % 2 === 0) {
return false;
}
for (let i = 3; i <= Math.sqrt(num); i++) {
if (num % i === 0) {
return false;
}
}
return true;
}
function mkPrimeSet(end) {
let primes = new Set([2,3,5,7]);
for(let i=10; i<Math.sqrt(end); i++) {
if (isPrime(i)) {
primes.add(i);
}
}
return primes;
}
function mkPrimeArray(end) {
let primes = [2, 3, 5, 7];
for (let i=10; i<Math.sqrt(end); i++) {
if (isPrime(i)) {
primes.push(i);
}
}
return primes;
}
function primeSet_itemOf_234(primeSet, end) {
let sumSet = new Set();
for(let item2 of primeSet) {
let square = item2 * item2;
for(let item3 of primeSet) {
let cube = item3 * item3 * item3;
for(let item4 of primeSet) {
let sum = square + cube + item4 * item4 * item4 * item4;
if (sum >= end) {
break;
}
sumSet.add(sum);
}
}
}
return sumSet.size;
}
function primeSet_itemOf_432(primeSet, end) {
let sumSet = new Set();
for(let item4 of primeSet) {
let fourth = item4 * item4 * item4 * item4;
for(let item3 of primeSet) {
let cube = item3 * item3 * item3;
for(let item2 of primeSet) {
let sum = fourth + cube + item2 * item2;
if (sum >= end) {
break;
}
sumSet.add(sum);
}
}
}
return sumSet.size;
}
function primeArray_index_234(primeArray, end) {
let sumSet = new Set();
for(let index2=0; index2 < primeArray.length; index2++) {
let square = primeArray[index2] * primeArray[index2];
for(let index3=0; index3 < primeArray.length; index3++) {
let cube = primeArray[index3] * primeArray[index3] * primeArray[index3];
for(let index4=0; index4 < primeArray.length; index4++) {
let sum = square + cube + primeArray[index4] * primeArray[index4] * primeArray[index4] * primeArray[index4];
if (sum >= end) {
break;
}
sumSet.add(sum);
}
}
}
return sumSet.size;
}
function primeArray_index_432(primeArray, end) {
let sumSet = new Set();
for(let index4=0; index4 < primeArray.length; index4++) {
let fourth = primeArray[index4] * primeArray[index4] * primeArray[index4] * primeArray[index4];
for(let index3=0; index3 < primeArray.length; index3++) {
let cube = primeArray[index3] * primeArray[index3] * primeArray[index3];
for(let index2=0; index2 < primeArray.length; index2++) {
let sum = fourth + cube + primeArray[index2] * primeArray[index2];
if (sum >= end) {
break;
}
sumSet.add(sum);
}
}
}
return sumSet.size;
}
function primeArray_itemOf_234(primeArray, end) {
let sumSet = new Set();
for(let item2 of primeArray) {
let square = item2 * item2;
for(let item3 of primeArray) {
let cube = item3 * item3 * item3;
for(let item4 of primeArray) {
let sum = square + cube + item4 * item4 * item4 * item4;
if (sum >= end) {
break;
}
sumSet.add(sum);
}
}
}
return sumSet.size;
}
function primeArray_itemOf_432(primeArray, end) {
let sumSet = new Set();
for(let item4 of primeArray) {
let fourth = item4 * item4 * item4 * item4;
for(let item3 of primeArray) {
let cube = item3 * item3 * item3;
for(let item2 of primeArray) {
let sum = fourth + cube + item2 * item2;
if (sum >= end) {
break;
}
sumSet.add(sum);
}
}
}
return sumSet.size;
}
function testrunFunction(fun, args, iterCount, printResult) {
if (!Number.isInteger(iterCount) || iterCount < 1) {
iterCount = 10;
}
if (printResult !== true) {
printResult = false;
}
let totalTimeTaken = 0;
for (let i = 0; i < iterCount; i++) {
let start = Date.now(),
funResult = fun(...args),
end = Date.now();
if (printResult) {
console.log("Got result: "+funResult+" in "+String(end - start)+" ms");
} else {
console.log("Got result in "+String(end - start)+" ms");
}
totalTimeTaken += (end - start);
}
console.log("Average time after "+iterCount+" runs: "+totalTimeTaken/iterCount);
}
function benchmark() {
const MAX = 5e7;
const MAX_ITER = 10;
console.log("Testing prime number generation first.");
console.log("PrimeSet: ");
testrunFunction(mkPrimeSet, [MAX], MAX_ITER);
let primeSet = mkPrimeSet(MAX);
console.log("PrimeArray:");
testrunFunction(mkPrimeArray, [MAX], MAX_ITER);
let primeArray = mkPrimeArray(MAX);
console.log("Finished number generation tests, testing now different implementations.");
console.log("PrimeSet, item of, 234:");
testrunFunction(primeSet_itemOf_234, [primeSet, MAX], MAX_ITER, true);
console.log("PrimeSet, item of, 432:");
testrunFunction(primeSet_itemOf_432, [primeSet, MAX], MAX_ITER, true);
console.log("PrimeArray, index, 234:");
testrunFunction(primeArray_index_234, [primeArray, MAX], MAX_ITER, true);
console.log("PrimeArray, index, 432:");
testrunFunction(primeArray_index_432, [primeArray, MAX], MAX_ITER, true);
console.log("PrimeArray, itemOf, 234:");
testrunFunction(primeArray_itemOf_234, [primeArray, MAX], MAX_ITER, true);
console.log("PrimeArray, itemOf, 432:");
testrunFunction(primeArray_itemOf_432, [primeArray, MAX], MAX_ITER, true);
}
benchmark();
/*
undefined
*/