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N = 1000 | |
# s = N.times.each_with_object([1, 1]) { |_, a| a << 2*a[-2] + a[-1] } | |
# p [s, s.size] | |
# # https://www.crondose.com/2017/02/fibonacci-sequence-generator-ruby/ | |
# s = N.times.reduce([1, 1]) { |a| a << 2*a[-2] + a[-1] } | |
# # https://docs.ruby-lang.org/ja/master/class/Enumerator.html#S_NEW | |
# enum = Enumerator.new { |y| |
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interface DisjointSets { | |
fun connect(p: Int, q: Int) | |
fun isConnected(p: Int, q: Int): Boolean | |
} | |
class DisjointSetsByArray(val elements: Int) : DisjointSets { | |
private val map = IntArray(elements) { -1 } | |
private fun top(id: Int): Int { | |
if (id !in map.indices) return -1 |
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package main | |
import ( | |
"io/fs" | |
"log" | |
"net/http" | |
"strings" | |
) | |
func isVideoFile(name string) bool { |
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require 'nokogiri' | |
require 'open-uri' | |
base = 'https://ncode.syosetu.com' | |
ncode = 'x0000xx' | |
seen = i = 777 | |
# start from #(seen + 1) chapter | |
p out = `date -Im`.strip | |
`mkdir #{out}` |
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function setup() { | |
createCanvas(500, 500) | |
background('lightgray') | |
} | |
function draw() { | |
let side = 300 | |
let third = side / 3 | |
noStroke() | |
translate(100, 100) |
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