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September 2017 Update

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Ingy döt Net 2017-09-23 10:01:46 +02:00
parent bba7bfd280
commit ba8067c3b7
14570 changed files with 153136 additions and 63871 deletions
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20
Task/Monte-Carlo-methods/JavaScript/monte-carlo-methods-1.js Normal file
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function mcpi(n) {
var x, y, m = 0;
for (var i = 0; i < n; i += 1) {
x = Math.random();
y = Math.random();
if (x * x + y * y < 1) {
m += 1;
}
}
return 4 * m / n;
}
console.log(mcpi(1000));
console.log(mcpi(10000));
console.log(mcpi(100000));
console.log(mcpi(1000000));
console.log(mcpi(10000000));

30
Task/Monte-Carlo-methods/JavaScript/monte-carlo-methods-2.js Normal file
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(() => {
'use strict';
// monteCarloPi :: Int -> Float
const monteCarloPi = n =>
4 * range(1, n)
.reduce(a => {
const [x, y] = [rnd(), rnd()];
return x * x + y * y < 1 ? a + 1 : a;
}, 0) / n;
// GENERIC FUNCTIONS
// range :: Int -> Int -> [Int]
const range = (m, n) =>
Array.from({
length: Math.floor(n - m) + 1
}, (_, i) => m + i);
// rnd :: () -> Float
const rnd = Math.random;
// TEST with from 1000 samples to 10E8 samples
return range(3, 8)
.map(x => monteCarloPi(Math.pow(10, x)));
// e.g. -> [3.14, 3.1404, 3.13304, 3.142408, 3.1420304, 3.14156788]
})();

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Task/Monte-Carlo-methods/JavaScript/monte-carlo-methods-3.js Normal file
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[3.14, 3.1404, 3.13304, 3.142408, 3.1420304, 3.14156788]

18
Task/Monte-Carlo-methods/JavaScript/monte-carlo-methods.js
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@ -1,18 +0,0 @@
function mcpi(n){
var x,y,m=0;
for(var i = 0; i < n; i += 1) {
x = Math.random();
y = Math.random();
if (x*x + y*y < 1) { m += 1; }
}
return 4*m/n;
}
console.log(mcpi(1000));
console.log(mcpi(10000));
console.log(mcpi(100000));
console.log(mcpi(1000000));
console.log(mcpi(10000000));