From dd3edd19ae1ca4dd8e3dcafc0b4651630385e9a5 Mon Sep 17 00:00:00 2001 From: Dmitry Tselinko Date: Sun, 12 Jan 2020 21:07:38 +0100 Subject: [PATCH] ids implementation --- Exercises/1-ids.js | 25 +++++++++++++------------ 1 file changed, 13 insertions(+), 12 deletions(-) diff --git a/Exercises/1-ids.js b/Exercises/1-ids.js index 29b9450..d060ef8 100644 --- a/Exercises/1-ids.js +++ b/Exercises/1-ids.js @@ -1,20 +1,21 @@ 'use strict'; const ids = function* () { - const free = ['0']; - const prepared = { has: false, value: '' }; - + let base = '1'; + let rank = -1; while (true) { - if (prepared.has) { - prepared.has = false; - yield prepared.value; + if (rank === -1) { + base = `1${'0'.repeat(base.length + 1)}`; + rank = base.length - 2; + yield base; + } + if (base[rank] === '0') { + base = `${base.slice(0, rank)}1${'0'.repeat(base.length - rank - 1)}`; + rank = base.length - 2; + yield base; + } else { + rank -= 2; } - const nextFree = free.shift(); - free.push('01' + nextFree); - free.push('00' + nextFree); - prepared.value = '11' + nextFree; - prepared.has = true; - yield '10' + nextFree; } }; pFad - Phonifier reborn

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