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| import p8g, { | |
| background, | |
| createCanvas, | |
| height, | |
| line, | |
| noSmooth, | |
| random, | |
| } from 'https://unpkg.com/p8g.js'; | |
| const insertionSort = (a) => { | |
| const n = a.length; | |
| for (let i = 1; i < n; i++) { | |
| for (let j = i; j > 0 && a[j - 1] > a[j]; j--) { | |
| [a[j], a[j - 1]] = [a[j - 1], a[j]]; | |
| } | |
| } | |
| return a; | |
| }; | |
| const fisherYatesShuffle = (a) => { | |
| const n = a.length; | |
| for (let i = 0; i < n - 2; i++) { | |
| const j = Math.floor(random(i, n)); | |
| [a[i], a[j]] = [a[j], a[i]]; | |
| } | |
| return a; | |
| }; | |
| function* makeIterator(fn, a) { | |
| const steps = []; | |
| const handler = { | |
| set(target, p, newValue) { | |
| steps.push([p, newValue]); | |
| target[p] = newValue; | |
| return true; | |
| }, | |
| }; | |
| const proxy = new Proxy([...a], handler); | |
| fn(proxy); | |
| for (const step of steps) { | |
| yield step; | |
| } | |
| } | |
| const n = 100; | |
| const sorted = [...Array(n).keys()]; | |
| let it, a; | |
| const init = () => { | |
| const unsorted = fisherYatesShuffle(sorted); | |
| it = makeIterator(insertionSort, unsorted); | |
| a = [...unsorted]; | |
| }; | |
| init(); | |
| p8g.draw = () => { | |
| background(255); | |
| noSmooth(); | |
| a.forEach((y, x) => { | |
| line(x, height, x, height - y); | |
| }); | |
| const { value, done } = it.next(); | |
| if (done) { | |
| init(); | |
| } else { | |
| const [x, y] = value; | |
| a[x] = y; | |
| } | |
| }; | |
| createCanvas(n, n); |
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