投稿時間:2022-07-17 11:20:10 RSSフィード2022-07-17 11:00 分まとめ(23件)

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IT	ITmedia 総合記事一覧	[ITmedia ビジネスオンライン] 新人YouTuberの登録者数ランキング　2位「にこちゃん放送局」、1位は？	https://www.itmedia.co.jp/business/articles/2207/14/news090.html	itmedia	2022-07-17 10:30:00
AWS	lambdaタグが付けられた新着投稿 - Qiita	AWS SAMを使って最もシンプルにLambda × APIGatewayのWebAPIを構築する	https://qiita.com/fkooo/items/e08cdea0f73f60dabd3d	apigateway	2022-07-17 10:12:11
python	Pythonタグが付けられた新着投稿 - Qiita	AWS SAMを使って最もシンプルにLambda × APIGatewayのWebAPIを構築する	https://qiita.com/fkooo/items/e08cdea0f73f60dabd3d	apigateway	2022-07-17 10:12:11
js	JavaScriptタグが付けられた新着投稿 - Qiita	study javascript dya1_1	https://qiita.com/sea_news_yass/items/adced1599a26debad060	daysinweekconsolelogc	2022-07-17 10:34:20
js	JavaScriptタグが付けられた新着投稿 - Qiita	RxJS　JavaScript　ボタンクリック書き方　違い	https://qiita.com/Kosuke610/items/221795a1a811aece76b7	jslttitlegtltscriptsrcdis	2022-07-17 10:25:45
Ruby	Rubyタグが付けられた新着投稿 - Qiita	rails ヘルパーメソッドを使ってviewファイルを整える	https://qiita.com/Ta_Tos/items/c87d645b3c8129a965f5	rails	2022-07-17 10:32:19
AWS	AWSタグが付けられた新着投稿 - Qiita	AWS SAMを使って最もシンプルにLambda × APIGatewayのWebAPIを構築する	https://qiita.com/fkooo/items/e08cdea0f73f60dabd3d	apigateway	2022-07-17 10:12:11
GCP	gcpタグが付けられた新着投稿 - Qiita	[GCP]TLS1.0/1.1を無効化	https://qiita.com/gomagon/items/5c1bced473294373cc35	gcptls	2022-07-17 10:19:07
Ruby	Railsタグが付けられた新着投稿 - Qiita	rails ヘルパーメソッドを使ってviewファイルを整える	https://qiita.com/Ta_Tos/items/c87d645b3c8129a965f5	rails	2022-07-17 10:32:19
海外TECH	DEV Community	Data Structures: Hash Tables II	https://dev.to/m13ha/data-structures-hash-tables-ii-1o5m	Data Structures Hash Tables IIThis is part of a two part article on hash tables In the first part of this article we looked at what hash tables are how they work and the various parts of a hash table In this part we will implement a hash table in Javascript so let s begin Our hash table is going to have main methods and we are going to be using separate chaining to handle collisions We will use Map objects in the buckets slots to store the data keys and values The four main methods of our hash table are Put Add a key and value to the table Get Find and return the value of a key Remove Delete a key and value from the table IsPresent Check if a key is present in the table Hash FunctionBefore we start building our hash table we need to first make our hash function const hashFunc key size gt let hash for let i i lt key length i hash key charCodeAt i return hash size The hash function takes in parameters the key and the size of the table Each character in the key is converted to UTF code using the charCodeAT string method and added up the resulting value is modded by the size of the table it is recommended that the size be a prime number to reduce the chances of collision The value we get from the equation is returned and will be used in storing and retrieving data in other functions Hash Tableclass HashTable constructor this size this table Array this size The class constructor has only properties the size of the table and the array itself hash tables use static arrays to store the data The size of a static array is set when it is created and will not change unless explicitly changed unlike dynamic arrays that change with an increase in the data inside them Put Method put key data let hashCode hashFunc key this size if this table hashCode this table hashCode new Map this table hashCode set key data else this table hashCode set key data The first method of our hash table is the put method as the name implies it puts data into the table it takes parameters the key and the data Let s break down how it works Method Break DownGet the hash code from the hashFunc by passing it the key and the table size property Check if that bucket is occupied if it is not occupied create a new map object and set the data in it If that table is occupied then just insert the data into the map object that we know will be there Get Method get key let hashCode hashFunc key this size if this table hashCode return this table hashCode get key else return no such data The get method takes a key and returns the data that is paired with that key in the table Method Break DownFirst get the hash code from hashFunc Check if there is data in that position of the table if yes get the value of the key from the map object and return it If that position in the table is empty let the user know the data doesn t exist Remove Method remove key let hashCode hashFunc key this size if this table hashCode let data this table hashCode get key this table hashCode delete key return data else return no such data This method deletes data from a table Method Break DownFirst get the hash code from hashFunc Check if there is data in that position of the table if yes get the value of the key from the map object and store it in a variable delete the key and value from the map object and return the variable If that position in the table is empty let the user know the data doesn t exist IsPresent Method isPresent key let hashCode hashFunc key this size if this table hashCode return this table hashCode has key This is a simple method to determine if a key already exists in the table Method Break DownFirst get the hash code from hashFunc Check if there is data in that position of the table if yes check if the map object there has any keys that match the given key and return the result Complete Codeconst hashFunc key size gt let hashCode for let i i lt key length i hashCode key charCodeAt i return hashCode size class HashTable constructor this size this table Array this size put key data let hashCode hashFunc key this size if this table hashCode this table hashCode new Map this table hashCode set key data else this table hashCode set key data get key let hashCode hashFunc key this size if this table hashCode return this table hashCode get key else return no such data remove key let hashCode hashFunc key this size if this table hashCode let data this table hashCode get key this table hashCode delete key return data else return no such data isPresent key let hashCode hashFunc key this size if this table hashCode return this table hashCode has key ConclusionThis brings us to the end of this article on Hash Tables and this series on data structures I learned a lot from writing these articles and it has helped me better understand and internalize certain concepts about programming and what it means to be a developer My next series will be on algorithms where ill cover topics such as recursion time complexity space complexity sorting etc I hope you ll give them a read The code for this article can be found here Thank you for making it this far and see you soon	2022-07-17 01:10:50
ニュース	@日本経済新聞 電子版	ファミマが「フードペアリング」　キューサイが味分析 https://t.co/HT7TfbYfyb	https://twitter.com/nikkei/statuses/1548481527482585089	ペアリング	2022-07-17 01:35:40
ニュース	@日本経済新聞 電子版	世界陸上マラソン、鈴木健吾と一山麻緒が欠場　コロナで https://t.co/Olyz1qWnlt	https://twitter.com/nikkei/statuses/1548477276605788161	一山麻緒	2022-07-17 01:18:46
海外ニュース	Japan Times latest articles	Banana Yoshimoto’s ‘Dead-End Memories’ is the literary equivalent of a lo-fi playlist	https://www.japantimes.co.jp/culture/2022/07/17/books/book-reviews/banana-yoshimoto-dead-end-memories/	Banana Yoshimoto s Dead End Memories is the literary equivalent of a lo fi playlistThe award winning author s collection of short stories is a comfort read that will transport readers to a melancholy world for an hour or two	2022-07-17 10:00:43
ニュース	BBC News - Home	Hot weather: Amber heat warning in place as country braces for record temperatures	https://www.bbc.co.uk/news/uk-62195015?at_medium=RSS&at_campaign=KARANGA	england	2022-07-17 01:46:45
ニュース	BBC News - Home	World Athletics Championships: Dina Asher-Smith wins 100m heat in 10.84 seconds	https://www.bbc.co.uk/sport/av/athletics/62195253?at_medium=RSS&at_campaign=KARANGA	World Athletics Championships Dina Asher Smith wins m heat in secondsDina Asher Smith wins her m heat at the World Championships in seconds the second fastest time of her career as British team mate Daryll Neita also progresses in a season s best seconds	2022-07-17 01:25:28
北海道	北海道新聞	福島ＰＣＢ受け入れ　室蘭市、説明会開催の有無触れず　市民団体が批判	https://www.hokkaido-np.co.jp/article/706751/	受け入れ	2022-07-17 10:35:19
北海道	北海道新聞	【道スポ】日本ハム野村　六回恩返しＶ打　近藤ヘッスラ＆上沢力投に４番が燃えた	https://www.hokkaido-np.co.jp/article/706795/	日本ハム	2022-07-17 10:29:00
北海道	北海道新聞	＜筋トレで体いきいき＞片足で１分間立ち　体を支える力を強化	https://www.hokkaido-np.co.jp/article/706793/	立ち	2022-07-17 10:28:00
北海道	北海道新聞	大谷、後半戦初戦で先発登板　ルース以来のダブル２桁へ	https://www.hokkaido-np.co.jp/article/706790/	先発登板	2022-07-17 10:27:00
北海道	北海道新聞	道内、太平洋側中心に１７日夜にかけ大雨　ＪＲ８６本運休	https://www.hokkaido-np.co.jp/article/706770/	太平洋側	2022-07-17 10:20:15
北海道	北海道新聞	チリがラグビーＷ杯初出場　日本と同じＤ組に	https://www.hokkaido-np.co.jp/article/706772/	日本	2022-07-17 10:13:00
北海道	北海道新聞	スケボー堀米、西矢ら決勝進出　ＳＬＳ第１戦、中山は落選	https://www.hokkaido-np.co.jp/article/706771/	決勝進出	2022-07-17 10:06:00
ビジネス	東洋経済オンライン	低予算｢ミニオンズ｣を大ヒットさせた大物の正体 任天堂とタッグ､｢マリオ｣の映画も制作予定 | 映画・音楽 | 東洋経済オンライン	https://toyokeizai.net/articles/-/603546?utm_source=rss&utm_medium=http&utm_campaign=link_back	東洋経済オンライン	2022-07-17 11:00:00