{"id":11406,"date":"2016-10-12T12:36:38","date_gmt":"2016-10-12T03:36:38","guid":{"rendered":"http:\/\/www.sejuku.net\/blog\/?p=11406"},"modified":"2024-05-06T11:39:44","modified_gmt":"2024-05-06T02:39:44","slug":"%e3%81%86%e3%82%8b%e8%a6%9a%e3%81%88%e8%a7%a3%e6%b6%88%ef%bc%81ruby%e3%81%aearray%e9%85%8d%e5%88%97%e3%81%ae%e6%96%87%e6%b3%95%e6%97%a9%e8%a6%8b%e8%a1%a8","status":"publish","type":"post","link":"https:\/\/www.sejuku.net\/blog\/11406","title":{"rendered":"\u3010ruby Array(\u914d\u5217)\u30116\u3064\u306e\u57fa\u672c\u3092\u3059\u3063\u304d\u308a\u89e3\u8aac\u3067\u6700\u77ed\u7406\u89e3"},"content":{"rendered":"<p><div class=\"box_voice\">Ruby\u306eArray(\u914d\u5217)\u306e\u4f7f\u3044\u65b9\u3092\u624b\u3063\u53d6\u308a\u65e9\u304f\u77e5\u308a\u305f\u3044<br \/>\nRuby\u306e\u914d\u5217\u3067\u8981\u7d20\u3092\u8ffd\u52a0\u3059\u308b\u306b\u306f\u3069\u3046\u3059\u308c\u3070\u3044\u3044\u306e\uff1f<br \/>\nRuby\u306e\u914d\u5217\u3067\u5404\u8981\u7d20\u3092\u53d6\u5f97\u3059\u308b\u65b9\u6cd5\u3092\u77e5\u308a\u305f\u3044<\/div><\/p>\n<p>\u3053\u3093\u306b\u3061\u306f\u3002\u30d5\u30ea\u30fc\u30e9\u30f3\u30b9\u306eWeb\u30b3\u30fc\u30c0\u30fc\u30fb\u30d7\u30ed\u30b0\u30e9\u30de\u30fc\u3068\u3057\u3066\u4e3b\u306bPHP\/WordPress\/BuddyPress\/VPS\u30b5\u30fc\u30d0\u30fc\u69cb\u7bc9\u306a\u3069\u306e\u696d\u52d9\u306b\u643a\u308f\u3063\u3066\u3044\u308b\u8c9d\u539f\u3067\u3059\u3002<\/p>\n<p>\u4eca\u65e5\u306f\u3001Ruby\u306e\u914d\u5217\u306e\u57fa\u672c\u6587\u6cd5\u306b\u3064\u3044\u3066\u89e3\u8aac\u3057\u305f\u3044\u3068\u601d\u3044\u307e\u3059\u3002Ruby\u306e\u914d\u5217\u3068\u4e00\u8a00\u3067\u8a00\u3063\u3066\u3082\u5b9f\u306f\u3067\u304d\u308b\u3053\u3068\u306f\u305f\u304f\u3055\u3093\u3042\u308a\u307e\u3059\u3002<\/p>\n<p>\u305d\u3053\u3067\u3001\u3053\u306e\u8a18\u4e8b\u3067\u306fRuby\u306e\u914d\u5217\u306b\u3064\u3044\u3066\u4f7f\u3044\u65b9\u306e\u57fa\u790e\u306e\u57fa\u790e\u304b\u3089\u3001\u914d\u5217\u3067\u3088\u304f\u4f7f\u3046\u30e1\u30bd\u30c3\u30c9\u307e\u3067\u7db2\u7f85\u7684\u306b\u89e3\u8aac\u3057\u3066\u3044\u304d\u307e\u3059\u3002<\/p>\n<p>\u3053\u306e\u8a18\u4e8b\u3067\u306f\u3001\u4ee5\u4e0b\u306e\u5185\u5bb9\u3067\u89e3\u8aac\u3057\u3066\u3044\u304d\u307e\u3059\u3002<br \/>\n<div class=\"box01\"><\/p>\n<ul>\n<li>\u914d\u5217\u306e\u57fa\u672c\u5f62\uff08\u30ea\u30c6\u30e9\u30eb\uff09<\/li>\n<li>\u914d\u5217\u306e6\u3064\u306e\u57fa\u672c<\/li>\n<li>\u914d\u5217\u306epush\u3001pop\u3001shift\u3001unshift\u30e1\u30bd\u30c3\u30c9<\/li>\n<li>\u914d\u5217\u306esort\u3001sort_by\u30e1\u30bd\u30c3\u30c9<\/li>\n<li>\u914d\u5217\u306eeach\u30e1\u30bd\u30c3\u30c9<\/li>\n<\/ul>\n<\/div>\n<p>\u3053\u306e\u30da\u30fc\u30b8\u3067\u3001Ruby\u306e\u914d\u5217\u306e\u4f7f\u3044\u65b9\u3092\u3088\u304f\u628a\u63e1\u3057\u3066\u81ea\u5206\u306e\u30b9\u30ad\u30eb\u3068\u3057\u3066\u3044\u304d\u307e\u3057\u3087\u3046\uff01<\/p>\n<h2>Ruby\u306e\u914d\u5217\u306e\u57fa\u672c\u5f62\uff08\u30ea\u30c6\u30e9\u30eb\uff09<\/h2>\n<p>\u914d\u5217\u3068\u306f\u3001Ruby\u306e<b>\u4efb\u610f\u306e\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u8907\u6570\u307e\u3068\u3081\u3066\u540c\u3058\u3088\u3046\u306b\u53d6\u308a\u6271\u3046<\/b>\u305f\u3081\u306e\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3067\u3059\u3002\u914d\u5217\u306e\u30ea\u30c6\u30e9\u30eb\u8868\u73fe\u306f\u3001[]\u3067\u56f2\u307f\u3001\u30ab\u30f3\u30de\u300c,\u300d\u533a\u5207\u308a\u3067\u8a18\u8ff0\u3057\u307e\u3059\u3002<\/p>\n<p>\u914d\u5217\u306e\u30ea\u30c6\u30e9\u30eb\u8868\u73fe\u3068\u306f\u3001Ruby\u306e\u30b3\u30fc\u30c9\u4e2d\u3067\u914d\u5217\u3068\u305d\u306e\u5185\u5bb9\u3092\u5b9a\u7fa9\u3059\u308b\u305f\u3081\u306e\u30b3\u30fc\u30c9\u306b\u3088\u308b\u914d\u5217\u306e\u8868\u73fe\u3067\u3059\u3002\u914d\u5217\u306b\u306f\u3001\u4efb\u610f\u306eRuby\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u8981\u7d20\u3068\u3057\u3066\u3082\u3064\u3053\u3068\u304c\u53ef\u80fd\u3067\u3059\u3002<\/p>\n<p>\u914d\u5217\u306e\u4e2d\u306b\u30cf\u30c3\u30b7\u30e5\u3092\u5165\u308c\u308b\u3053\u3068\u3084\u3001\u914d\u5217\u306e\u4e2d\u306b\u3055\u3089\u306b\u914d\u5217\u3092\u5165\u308c\u308b\u5165\u308c\u5b50\u306e\u914d\u5217\u3092\u4f5c\u308b\u3053\u3068\u3082\u3067\u304d\u307e\u3059\u3002<\/p>\n<pre class=\"lang:ruby decode:true \"># \u6587\u5b57\u5217\u306e\u914d\u5217\r\n[\"Samurai\", \"Ruby\", \"Rails\", \"Python\"]\r\n\r\n# \u6570\u5024\u306e\u914d\u5217\r\n[50, -60, 700, 8000]\r\n\r\n# \u30cf\u30c3\u30b7\u30e5\u306e\u914d\u5217\r\n [{ruby: 80}, {python: 70}, {swift: 60}]\r\n \r\n#\u914d\u5217\u306e\u5165\u308c\u5b50\r\n[\"Samurai\", [\"Ruby\", \"Rails\"], \"Python\"]\r\n\r\n# \u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u304c\u6df7\u5728\u3057\u305f\u914d\u5217\r\n[50, \"Samurai\", [\"Ruby\", \"Rails\"], \"Python\", {ruby: 80}, 8000]<\/pre>\n<p>\u4ee5\u4e0a\u306e\u3088\u3046\u306b\u3001\u914d\u5217\u306e\u8981\u7d20\u306b\u306f\u4efb\u610f\u306e\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u5165\u308c\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<p>\u4efb\u610f\u306e\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u5165\u308c\u308b\u3053\u3068\u304c\u3067\u304d\u308b\u3068\u3044\u3046\u3053\u3068\u306f\u3001\u6570\u5024\u3084\u30cf\u30c3\u30b7\u30e5\u3001\u914d\u5217\u306a\u3069\u3092\u914d\u5217\u306b\u5165\u308c\u308b\u3053\u3068\u3082\u53ef\u80fd\u3060\u3068\u3044\u3046\u3053\u3068\u3067\u3059\u3002\u914d\u5217\u306e\u57fa\u790e\u306b\u3064\u3044\u3066\u306f\u3001\u4e0b\u8a18\u306e\u8a18\u4e8b\u3092\u53c2\u7167\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n            <a href=\"https:\/\/www.sejuku.net\/blog\/15120\" class=\"blog-card-anchor\">\n                <div class=\"blog-card\">\n                <div class=\"blog-card-content\">\n                    <div class=\"blog-card-thumbnail\">\n                    <img decoding=\"async\" class=\"blog-card-thumbnail-img\" src=\"https:\/\/www.sejuku.net\/blog\/wp-content\/uploads\/2017\/02\/image2-150x86.jpg\">\n                    <\/div>\n                    <div class=\"blog-card-title-wrap\">\n                    <div class=\"blog-card-title\">\u3010Ruby\u306e\u914d\u5217\u3011\u57fa\u790e\u304b\u3089\u767a\u5c55\u307e\u3067\u3092\u7db2\u7f85\u3057\u307e\u3057\u305f\uff01<\/div>\n                    <div class=\"blog-card-update-date\">\u66f4\u65b0\u65e5\uff1a2024\u5e745\u67086\u65e5<\/div>\n                    <\/div>\n                <\/div>\n                <\/div>\n            <\/a>\n            \n<h2>Ruby\u306e\u914d\u5217\u306e6\u3064\u306e\u57fa\u672c<\/h2>\n<h3>\u521d\u671f\u5316<\/h3>\n<p>\u914d\u5217\u306e\u521d\u671f\u5316\u306f\u3001\u7a7a\u306e\u914d\u5217\u306e\u30ea\u30c6\u30e9\u30eb\u8868\u73fe[]\u3092\u4ee3\u5165\u3059\u308b\u3053\u3068\u3067\u53ef\u80fd\u3067\u3059\u3002\u307e\u305f\u3001Array\u30af\u30e9\u30b9\u306enew\u30e1\u30bd\u30c3\u30c9\u306b\u3088\u308a<b>\u914d\u5217\u3092\u521d\u671f\u5316<\/b>\u3059\u308b\u3053\u3068\u3082\u3067\u304d\u307e\u3059\u3002<\/p>\n<p>\u521d\u671f\u5316\u5f8c\u306e\u914d\u5217\u306f\u901a\u5e38\u3001\u7a7a\u306e\u914d\u5217\u3067\u3059\u3002new\u30e1\u30bd\u30c3\u30c9\u306b\u914d\u5217\u306e\u30b5\u30a4\u30ba\u3092\u6307\u5b9a\u3057\u3066\u4efb\u610f\u306e\u8981\u7d20\u6570\u306e\u914d\u5217\u3092\u521d\u671f\u5316\u3067\u304d\u307e\u3059\u3002<\/p>\n<p>\u307e\u305f\u3002new\u30e1\u30bd\u30c3\u30c9\u306b\u914d\u5217\u306e\u30b5\u30a4\u30ba\u3068\u8981\u7d20\u306e\u521d\u671f\u5024\u3092\u6307\u5b9a\u3057\u3066\u4efb\u610f\u306e\u8981\u7d20\u6570\u3067\u540c\u3058\u521d\u671f\u5024\u3092\u6301\u3063\u305f\u8981\u7d20\u3092\u6301\u3064\u914d\u5217\u3092\u521d\u671f\u5316\u3059\u308b\u3053\u3068\u3082\u3067\u304d\u307e\u3059\u3002<\/p>\n<pre class=\"lang:ruby decode:true \">#\u521d\u671f\u5316\r\narray = []\r\nputs \"No.1:\" + array.to_s\r\n\r\n#\u307e\u305f\u306f\r\narray = Array.new()\r\nputs \"No.2:\" + array.to_s\r\n \r\n#\u30b5\u30a4\u30ba\u3092\u6307\u5b9a\u3057\u3066\u521d\u671f\u5316\r\narray = Array.new(3)\r\nputs \"No.3:\" + array.to_s\r\n \r\n#\u30b5\u30a4\u30ba\u3068\u8981\u7d20\u3092\u6307\u5b9a\u3057\u3066\u521d\u671f\u5316\r\narray = Array.new(3, \"samurai\")\r\nputs \"No.4:\" + array.to_s<\/pre>\n<p>\u5b9f\u884c\u7d50\u679c\uff1a<\/p>\n<pre class=\"striped:false marking:false ranges:false nums:false nums-toggle:false lang:default decode:true \">No.1:[]\r\nNo.2:[]\r\nNo.3:[nil, nil, nil]\r\nNo.4:[\"samurai\", \"samurai\", \"samurai\"]<\/pre>\n<p>\u4ee5\u4e0a\u306e\u3088\u3046\u306b\u3001\u7a7a\u306e\u914d\u5217\u3068\u3057\u3066\u521d\u671f\u5316\u3067\u304d\u307e\u3057\u305f\u3002\u307e\u305f\u3001\u8981\u7d20\u6570\u3084\u521d\u671f\u5024\u3092\u6307\u5b9a\u3057\u3066\u914d\u5217\u3092\u521d\u671f\u5316\u3067\u304d\u307e\u3057\u305f\u3002<\/p>\n<p>\u306a\u304a\u3001\u914d\u5217\u306e\u521d\u671f\u5316\u306b\u3064\u3044\u3066\u3001\u8a73\u3057\u304f\u306f\u4e0b\u8a18\u306e\u8a18\u4e8b\u3092\u53c2\u7167\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n            <a href=\"https:\/\/www.sejuku.net\/blog\/14332\" class=\"blog-card-anchor\">\n                <div class=\"blog-card\">\n                <div class=\"blog-card-content\">\n                    <div class=\"blog-card-thumbnail\">\n                    <img decoding=\"async\" class=\"blog-card-thumbnail-img\" src=\"https:\/\/www.sejuku.net\/blog\/wp-content\/uploads\/2017\/01\/ruby-shokika-150x86.png\">\n                    <\/div>\n                    <div class=\"blog-card-title-wrap\">\n                    <div class=\"blog-card-title\">\u3010\u521d\u5fc3\u8005\u5fc5\u898b\u3011Ruby\u914d\u5217\u306e\u521d\u671f\u5316\u306e\u65b9\u6cd5\u307e\u3068\u3081\u3066\u307f\u305f\uff01<\/div>\n                    <div class=\"blog-card-update-date\">\u66f4\u65b0\u65e5\uff1a2024\u5e745\u670821\u65e5<\/div>\n                    <\/div>\n                <\/div>\n                <\/div>\n            <\/a>\n            \n<h3>\u8981\u7d20\u306e\u53d6\u5f97<\/h3>\n<p>\u914d\u5217\u306e\u8981\u7d20\u3092\u53d6\u5f97\u3059\u308b\u306b\u306f\u3001\u914d\u5217\u306e\u5165\u3063\u305f\u5909\u6570\u306b\u5bfe\u3057\u3066[]\u6f14\u7b97\u5b50\u306b\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\uff08\u6dfb\u3048\u5b57\uff09\u3092\u6307\u5b9a\u3057\u307e\u3059\u3002<\/p>\n<p>\u4f8b\u3048\u3070\u3001array\u5909\u6570\u306e\u30a4\u30f3\u30c7\u30c3\u30af\u30b90\u756a\u76ee\u306e\u8981\u7d20\u3092\u53d6\u5f97\u3059\u308b\u306b\u306f\u3001\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u30b3\u30fc\u30c9\u3092\u66f8\u304d\u307e\u3059\u3002<\/p>\n<pre class=\"lang:ruby decode:true \">array[0]<\/pre>\n<p>\u5b9f\u969b\u306b\u30b5\u30f3\u30d7\u30eb\u30b3\u30fc\u30c9\u3067\u78ba\u8a8d\u3057\u3066\u307f\u307e\u3057\u3087\u3046\u3002<\/p>\n<pre class=\"lang:ruby decode:true \">array = [\"Samurai\", \"Ruby\", \"Rails\", \"Python\"]\r\n \r\n# \u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u3092\u6307\u5b9a\u3057\u3066\u5024\u3092\u53d6\u5f97\r\nputs \"No.1:\" + array[0].to_s\r\nputs \"No.2:\" + array[1].to_s\r\nputs \"No.3:\" + array[2].to_s\r\nputs \"No.4:\" + array[3].to_s<\/pre>\n<p>\u5b9f\u884c\u7d50\u679c\uff1a<\/p>\n<pre class=\"striped:false marking:false ranges:false nums:false nums-toggle:false lang:default decode:true \">No.1:Samurai\r\nNo.2:Ruby\r\nNo.3:Rails\r\nNo.4:Python<\/pre>\n<p>\u4ee5\u4e0a\u306e\u3088\u3046\u306b\u3001\u914d\u5217\u306b\u5bfe\u3057[]\u6f14\u7b97\u5b50\u3092\u4f7f\u3063\u3066\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u3092\u6307\u5b9a\u3059\u308b\u3053\u3068\u3067\u3001\u914d\u5217\u306e\u8981\u7d20\u3092\u53d6\u5f97\u3067\u304d\u307e\u3057\u305f\u3002<\/p>\n<h3>\u8981\u7d20\u306e\u8ffd\u52a0<\/h3>\n<p>\u914d\u5217\u306b\u8981\u7d20\u3092\u8ffd\u52a0\u3059\u308b\u306b\u306f\u3001\u914d\u5217\u306e\u5165\u3063\u305f\u5909\u6570\u306b[]\u6f14\u7b97\u5b50\u3067\u5b58\u5728\u3057\u306a\u3044\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u3092\u6307\u5b9a\u3057\u3001\u305d\u308c\u306b\u5bfe\u3057\u5024\u3092\u4ee3\u5165\u3057\u307e\u3059\u3002\u5b58\u5728\u3057\u306a\u304b\u3063\u305f\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u306b\u5bfe\u3057\u3001\u8981\u7d20\u304c\u8ffd\u52a0\u3055\u308c\u307e\u3059\u3002<\/p>\n<p>\u307e\u305f\u3001\u7c21\u5358\u306b\u914d\u5217\u306b\u8981\u7d20\u3092\u8ffd\u52a0\u3059\u308b\u65b9\u6cd5\u3068\u3057\u3066\u3001\u914d\u5217\u306epush\u30e1\u30bd\u30c3\u30c9\u304c\u3042\u308a\u307e\u3059\u3002push\u30e1\u30bd\u30c3\u30c9\u306f\u3001\u914d\u5217\u306e\u672b\u5c3e\u306b\u6307\u5b9a\u3057\u305f\u5024\u3092\u8ffd\u52a0\u3057\u307e\u3059\u3002<\/p>\n<p>\u5b9f\u969b\u306b\u30b5\u30f3\u30d7\u30eb\u30b3\u30fc\u30c9\u3092\u307f\u3066\u307f\u307e\u3057\u3087\u3046\u3002<\/p>\n<pre class=\"lang:ruby decode:true \">array = [\"Samurai\", \"Ruby\", \"Rails\", \"Python\"]\r\n \r\n# \u5b58\u5728\u3057\u306a\u3044\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u3092\u6307\u5b9a\r\nputs \"No.1:\" + array[4].to_s\r\n\r\n# \u4ee3\u5165\r\narray[4] = \"Java\"\r\n\r\n# \u4ee3\u5165\u306e\u7d50\u679c\u3092\u8868\u793a\r\nputs \"No.2:\" + array[4].to_s\r\n\r\n# \u914d\u5217\u5168\u4f53\u3092\u8868\u793a\r\nputs \"No.3:\" + array.to_s\r\n\r\n# push\u30e1\u30bd\u30c3\u30c9\u3067\u3082\u8ffd\u52a0\u3067\u304d\u308b\r\narray.push(\"PHP\")\r\nputs \"No.4:\" + array.to_s<\/pre>\n<p>\u5b9f\u884c\u7d50\u679c\uff1a<\/p>\n<pre class=\"striped:false marking:false ranges:false nums:false nums-toggle:false lang:default decode:true \">No.1:\r\nNo.2:Java\r\nNo.3:[\"Samurai\", \"Ruby\", \"Rails\", \"Python\", \"Java\"]\r\nNo.4:[\"Samurai\", \"Ruby\", \"Rails\", \"Python\", \"Java\", \"PHP\"]<\/pre>\n<p>\u4ee5\u4e0a\u306e\u3088\u3046\u306b\u3001\u914d\u5217\u306e\u5165\u3063\u305f\u5909\u6570\u306b[]\u6f14\u7b97\u5b50\u3067<b>\u5b58\u5728\u3057\u306a\u3044\u30a4\u30f3\u30c7\u30c3\u30af\u30b9<\/b>\u3092\u6307\u5b9a\u3057\u3001\u305d\u308c\u306b\u5bfe\u3057\u5024\u3092\u4ee3\u5165\u3059\u308b\u3053\u3068\u3067\u3001\u914d\u5217\u306e\u8981\u7d20\u3092\u8ffd\u52a0\u3067\u304d\u307e\u3059\u3002\u307e\u305f\u3001\u914d\u5217\u306epush\u30e1\u30bd\u30c3\u30c9\u306b\u3088\u308a\u3001\u914d\u5217\u306e\u672b\u5c3e\u306b\u8981\u7d20\u3092\u8ffd\u52a0\u3067\u304d\u307e\u3059\u3002<\/p>\n<h3>\u8981\u7d20\u306e\u66f4\u65b0<\/h3>\n<p>\u914d\u5217\u306e<b>\u8981\u7d20\u3092\u66f4\u65b0<\/b>\u3059\u308b\u306b\u306f\u3001\u914d\u5217\u306e\u5165\u3063\u305f\u5909\u6570\u306b[]\u6f14\u7b97\u5b50\u3067\u65e2\u5b58\u306e\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u3092\u6307\u5b9a\u3057\u3001\u305d\u308c\u306b\u5bfe\u3057\u5024\u3092\u4ee3\u5165\u3057\u307e\u3059\u3002\u4f8b\u3048\u3070\u3001array\u5909\u6570\u306e\u30a4\u30f3\u30c7\u30c3\u30af\u30b91\u756a\u76ee\u306e\u8981\u7d20\u3092\u66f4\u65b0\u3059\u308b\u306b\u306f\u3001\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u30b3\u30fc\u30c9\u3092\u66f8\u304d\u307e\u3059\u3002<\/p>\n<pre class=\"lang:ruby decode:true \">array[1] = \u5024<\/pre>\n<p>\u5b9f\u969b\u306e\u30b5\u30f3\u30d7\u30eb\u30b3\u30fc\u30c9\u3092\u307f\u3066\u3044\u304d\u307e\u3057\u3087\u3046\u3002<\/p>\n<pre class=\"lang:ruby decode:true \">array = [\"Samurai\", \"Ruby\", \"Rails\", \"Python\"]\r\n\r\n# 1\u756a\u76ee\u306e\u8981\u7d20\u306f\"Samurai\"\r\nputs \"No.1:\" + array[1].to_s\r\n\r\n# 1\u756a\u76ee\u306e\u8981\u7d20\u3092\u66f4\u65b0\r\narray[1] = \"Swift\"\r\nputs \"No.2:\" + array[1].to_s\r\n\r\n# \u914d\u5217\u5168\u4f53\u3092\u8868\u793a\r\narray\r\nputs \"No.3:\" + array.to_s<\/pre>\n<p>\u5b9f\u884c\u7d50\u679c\uff1a<\/p>\n<pre class=\"striped:false marking:false ranges:false nums:false nums-toggle:false lang:default decode:true \">No.1:Ruby\r\nNo.2:Swift\r\nNo.3:[\"Samurai\", \"Swift\", \"Rails\", \"Python\"]<\/pre>\n<p>\u4ee5\u4e0a\u306e\u3088\u3046\u306b\u3001\u914d\u5217\u306e\u5165\u3063\u305f\u5909\u6570\u306b[]\u6f14\u7b97\u5b50\u3067<b>\u65e2\u5b58\u306e\u30a4\u30f3\u30c7\u30c3\u30af\u30b9<\/b>\u3092\u6307\u5b9a\u3057\u3001\u305d\u308c\u306b\u5bfe\u3057\u5024\u3092\u4ee3\u5165\u3059\u308b\u3053\u3068\u3067\u3001\u914d\u5217\u306e\u8981\u7d20\u3092\u66f4\u65b0\u3067\u304d\u307e\u3059\u3002<\/p>\n<h3>\u8981\u7d20\u306e\u524a\u9664<\/h3>\n<p>\u914d\u5217\u306e\u8981\u7d20\u3092\u524a\u9664\u3059\u308b\u306b\u306f\u3001\u914d\u5217\u306edelete\u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u7528\u3057\u307e\u3059\u3002delete\u30e1\u30bd\u30c3\u30c9\u306b\u5024\u3092\u6307\u5b9a\u3059\u308b\u3068\u3001\u914d\u5217\u4e2d\u306e\u540c\u3058\u5024\u3092\u3082\u3064\u8981\u7d20\u3092\u524a\u9664\u3057\u307e\u3059\u3002<\/p>\n<p>\u307e\u305f\u3001\u914d\u5217\u306b[]\u6f14\u7b97\u5b50\u3067<b>\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u306e\u7bc4\u56f2<\/b>\u3092\u6307\u5b9a\u3057\u3001\u305d\u308c\u306b\u7a7a\u306e\u914d\u5217\u30ea\u30c6\u30e9\u30eb[]\u3092\u4ee3\u5165\u3059\u308b\u3053\u3068\u3067\u3001\u6307\u5b9a\u3057\u305f\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u306e\u7bc4\u56f2\u5206\u3060\u3051\u914d\u5217\u304b\u3089\u8981\u7d20\u3092\u524a\u9664\u3067\u304d\u307e\u3059\u3002<\/p>\n<p>\u5b9f\u969b\u306e\u30b5\u30f3\u30d7\u30eb\u30b3\u30fc\u30c9\u3092\u307f\u3066\u3044\u304d\u307e\u3057\u3087\u3046\u3002<\/p>\n<pre class=\"lang:ruby decode:true \">array = [\"Samurai\", \"Ruby\", \"Rails\", \"Python\", \"Ruby\"]\r\nputs \"No.1:\" + array.to_s\r\n \r\n# \u540c\u3058\u8981\u7d20\u3092\u5168\u3066\u524a\u9664\r\narray.delete(\"Ruby\")\r\nputs \"No.2:\" + array.to_s\r\n \r\n#\u7bc4\u56f2\u3092\u6307\u5b9a\u3057\u3066\u524a\u9664\u3067\u304d\u308b\r\narray = [\"Samurai\", \"Ruby\", \"Rails\", \"Python\"]\r\n\r\n# \u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u306e1\u304b\u30892\u500b\u306e\u8981\u7d20\u3092\u524a\u9664\r\narray[1, 2] = []\r\nputs \"No.3:\" + array.to_s<\/pre>\n<p>\u5b9f\u884c\u7d50\u679c\uff1a<\/p>\n<pre class=\"striped:false marking:false ranges:false nums:false nums-toggle:false lang:default decode:true \">No.1:[\"Samurai\", \"Ruby\", \"Rails\", \"Python\", \"Ruby\"]\r\nNo.2:[\"Samurai\", \"Rails\", \"Python\"]\r\nNo.3:[\"Samurai\", \"Python\"]<\/pre>\n<p>\u4ee5\u4e0a\u306e\u3088\u3046\u306b\u3001delete\u30e1\u30bd\u30c3\u30c9\u306b\u5024\u3092\u6307\u5b9a\u3057\u3066\u914d\u5217\u4e2d\u306e\u540c\u3058\u5024\u3092\u6301\u3064\u8981\u7d20\u3092\u524a\u9664\u3067\u304d\u307e\u3059\u3002\u307e\u305f\u3001\u914d\u5217\u306b\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u306e\u7bc4\u56f2\u3092\u6307\u5b9a\u3057\u3001\u7a7a\u306e\u914d\u5217\u30ea\u30c6\u30e9\u30eb[]\u3092\u4ee3\u5165\u3059\u308b\u3053\u3068\u3067\u914d\u5217\u306e\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u306e\u7bc4\u56f2\u3092\u524a\u9664\u3067\u304d\u307e\u3059\u3002<\/p>\n<h3>\u8981\u7d20\u6570\u306e\u53d6\u5f97<\/h3>\n<p>\u914d\u5217\u306e\u8981\u7d20\u6570\u3092\u53d6\u5f97\u3059\u308b\u306b\u306f\u3001size\u30e1\u30bd\u30c3\u30c9\u3092\u5b9f\u884c\u3057\u307e\u3059\u3002\u307e\u305f\u3001size\u30e1\u30bd\u30c3\u30c9\u306e\u30a8\u30a4\u30ea\u30a2\u30b9\u3067\u3042\u308blength\u30e1\u30bd\u30c3\u30c9\u3067\u3082\u3001\u914d\u5217\u306e\u8981\u7d20\u6570\u3092\u53d6\u5f97\u3067\u304d\u307e\u3059\u3002<\/p>\n<p>\u3055\u3089\u306bcount\u30e1\u30bd\u30c3\u30c9\u3067\u3082\u914d\u5217\u306e\u8981\u7d20\u6570\u3092\u53d6\u5f97\u3067\u304d\u307e\u3059\u3002count\u30e1\u30bd\u30c3\u30c9\u306e\u5f15\u6570\u306b\u5024\u3092\u6307\u5b9a\u3059\u308b\u3068\u3001\u914d\u5217\u4e2d\u3067\u540c\u3058\u5024\u3092\u6301\u3064\u8981\u7d20\u6570\u3092\u53d6\u5f97\u3067\u304d\u307e\u3059\u3002<\/p>\n<p>\u5b9f\u969b\u306e\u30b5\u30f3\u30d7\u30eb\u30b3\u30fc\u30c9\u3092\u307f\u3066\u3044\u304d\u307e\u3057\u3087\u3046\u3002<\/p>\n<pre class=\"lang:ruby decode:true \"># size\u30e1\u30bd\u30c3\u30c9\u3001length\u30e1\u30bd\u30c3\u30c9\u3001count\u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u7528\u3059\u308b\r\narray = [\"Samurai\", \"Ruby\", \"Rails\", \"Python\", \"Ruby\"]\r\n\r\n# size\u30e1\u30bd\u30c3\u30c9\r\nputs \"No.1:\" + array.size.to_s\r\n\r\n# length\u30e1\u30bd\u30c3\u30c9\r\nputs \"No.2:\" + array.length.to_s\r\n\r\n# count\u30e1\u30bd\u30c3\u30c9\r\nputs \"No.3:\" + array.count.to_s\r\n\r\n# count\u30e1\u30bd\u30c3\u30c9\u306f\u6307\u5b9a\u3057\u305f\u5024\u304c\u914d\u5217\u306b\u4f55\u500b\u3042\u308b\u304b\u6570\u3048\u308b\r\nputs \"No.4:\" + array.count(\"Ruby\").to_s<\/pre>\n<p>\u5b9f\u884c\u7d50\u679c\uff1a<\/p>\n<pre class=\"striped:false marking:false ranges:false nums:false nums-toggle:false lang:default decode:true \">No.1:5\r\nNo.2:5\r\nNo.3:5\r\nNo.4:2<\/pre>\n<p>\u4ee5\u4e0a\u306e\u3088\u3046\u306b\u3001\u914d\u5217\u306esize\u3001length\u3001count\u30e1\u30bd\u30c3\u30c9\u3067\u914d\u5217\u306e\u8981\u7d20\u6570\u3092\u53d6\u5f97\u3067\u304d\u307e\u3059\u3002\u307e\u305f\u3001count\u30e1\u30bd\u30c3\u30c9\u306e\u5f15\u6570\u306b\u5024\u3092\u6307\u5b9a\u3059\u308b\u3053\u3068\u3067\u3001\u914d\u5217\u4e2d\u306e\u540c\u3058\u5024\u3092\u3082\u3064\u8981\u7d20\u6570\u3092\u53d6\u5f97\u3067\u304d\u307e\u3059\u3002<\/p>\n<p>\u306a\u304a\u3001\u914d\u5217\u306esize\u3001length\u3001count\u30e1\u30bd\u30c3\u30c9\u306b\u3064\u3044\u3066\u3001\u8a73\u3057\u304f\u306f\u4e0b\u8a18\u306e\u8a18\u4e8b\u3092\u53c2\u7167\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n            <a href=\"https:\/\/www.sejuku.net\/blog\/14966\" class=\"blog-card-anchor\">\n                <div class=\"blog-card\">\n                <div class=\"blog-card-content\">\n                    <div class=\"blog-card-thumbnail\">\n                    <img decoding=\"async\" class=\"blog-card-thumbnail-img\" src=\"https:\/\/www.sejuku.net\/blog\/wp-content\/uploads\/2017\/09\/image-64-150x86.jpg\">\n                    <\/div>\n                    <div class=\"blog-card-title-wrap\">\n                    <div class=\"blog-card-title\">\u3010Ruby\u5165\u9580\u3011length,size,count\u306e\u4f7f\u3044\u65b9\u307e\u3068\u3081<\/div>\n                    <div class=\"blog-card-update-date\">\u66f4\u65b0\u65e5\uff1a2024\u5e745\u67086\u65e5<\/div>\n                    <\/div>\n                <\/div>\n                <\/div>\n            <\/a>\n            \n<h2>Ruby\u306e\u914d\u5217\u306e\u3088\u304f\u4f7f\u3046\u30e1\u30bd\u30c3\u30c9<\/h2>\n<p>\u4ee5\u964d\u306f\u3001\u914d\u5217\u3067\u3088\u304f\u4f7f\u3046\u30e1\u30bd\u30c3\u30c9\u3092\u7d39\u4ecb\u3057\u3066\u3044\u304d\u307e\u3059\u3002\u306a\u304a\u3001\u914d\u5217\u3067\u3088\u304f\u4f7f\u3046\u30e1\u30bd\u30c3\u30c9\u306b\u3064\u3044\u3066\u3001\u8a73\u3057\u304f\u306f\u4e0b\u8a18\u306e\u8a18\u4e8b\u3092\u53c2\u7167\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n\n<h3>\u914d\u5217\u306epush\u3001pop\u3001shift\u3001unshift\u30e1\u30bd\u30c3\u30c9<\/h3>\n<p>\u914d\u5217\u306e\u672b\u5c3e\u306b\u8981\u7d20\u3092\uff11\u3064\u8ffd\u52a0\u3059\u308b\u306b\u306fpush\u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u7528\u3057\u307e\u3059\u3002\u5bfe\u3057\u3066\u914d\u5217\u306e\u672b\u5c3e\u304b\u3089\u8981\u7d20\u3092\uff11\u3064\u524a\u9664\u3059\u308b\u306b\u306fpop\u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u7528\u3057\u307e\u3059\u3002<\/p>\n<p>\u914d\u5217\u306e\u5148\u982d\u306b\u8981\u7d20\u3092\uff11\u3064\u8ffd\u52a0\u3059\u308b\u306b\u306funshift\u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u7528\u3057\u307e\u3059\u3002\u5bfe\u3057\u3066\u914d\u5217\u306e\u5148\u982d\u304b\u3089\u8981\u7d20\u3092\uff11\u3064\u524a\u9664\u3059\u308b\u306b\u306fshift\u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u7528\u3057\u307e\u3059\u3002<\/p>\n<p>\u5b9f\u969b\u306e\u30b5\u30f3\u30d7\u30eb\u30b3\u30fc\u30c9\u3092\u307f\u3066\u3044\u304d\u307e\u3057\u3087\u3046\u3002<\/p>\n<pre class=\"lang:ruby decode:true \">array = [\"Samurai\", \"Ruby\", \"Rails\"]\r\n\r\n# push\u306f\u8981\u7d20\u306e\u914d\u5217\u306e\u672b\u5c3e\u3078\u306e\u8ffd\u52a0\r\narray.push(\"Swift\")\r\nputs \"No.1:\" + array.to_s\r\n\r\n# pop\u306f\u8981\u7d20\u306e\u914d\u5217\u306e\u672b\u5c3e\u304b\u3089\u306e\u524a\u9664\r\narray.pop\r\nputs \"No.2:\" + array.to_s\r\n\r\n# unshift\u306f\u8981\u7d20\u306e\u914d\u5217\u306e\u5148\u982d\u3078\u306e\u8ffd\u52a0\r\narray.unshift(\"Scala\")\r\nputs \"No.3:\" + array.to_s\r\n\r\n# shift\u306f\u8981\u7d20\u306e\u914d\u5217\u306e\u5148\u982d\u304b\u3089\u306e\u524a\u9664\r\narray.shift\r\nputs \"No.4:\" + array.to_s<\/pre>\n<p>\u5b9f\u884c\u7d50\u679c\uff1a<\/p>\n<pre class=\"striped:false marking:false ranges:false nums:false nums-toggle:false lang:default decode:true \">No.1:[\"Samurai\", \"Ruby\", \"Rails\", \"Swift\"]\r\nNo.2:[\"Samurai\", \"Ruby\", \"Rails\"]\r\nNo.3:[\"Scala\", \"Samurai\", \"Ruby\", \"Rails\"]\r\nNo.4:[\"Samurai\", \"Ruby\", \"Rails\"]<\/pre>\n<p>\u4ee5\u4e0a\u306e\u3088\u3046\u306b\u3001\u914d\u5217\u306e\u672b\u5c3e\u306e\u8981\u7d20\u3092\u8ffd\u52a0\u30fb\u524a\u9664\u3059\u308b\u306b\u306f\u3001push\u3001pop\u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u7528\u3057\u307e\u3059\u3002\u914d\u5217\u306e\u5148\u982d\u306e\u8981\u7d20\u3092\u8ffd\u52a0\u30fb\u524a\u9664\u3059\u308b\u306b\u306f\u3001unshift\u3001shift\u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u7528\u3057\u307e\u3059\u3002<\/p>\n<h3>\u914d\u5217\u306esort\u3001sort_by\u30e1\u30bd\u30c3\u30c9<\/h3>\n<p>\u914d\u5217\u306e\u8981\u7d20\u3092\u3001\u5024\u306e\u6607\u9806\u306b\u4e26\u3073\u66ff\u3048\u308b\u306b\u306fsort\u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u7528\u3057\u307e\u3059\u3002\u914d\u5217\u306e\u8981\u7d20\u3092\u3001\u597d\u304d\u306a\u9806\u756a\u3067\u4e26\u3073\u66ff\u3048\u308b\u306b\u306fsort\u30e1\u30bd\u30c3\u30c9\u306b\u30d6\u30ed\u30c3\u30af\u3092\u4e0e\u3048\u307e\u3059\u3002<\/p>\n<p>\u30d6\u30ed\u30c3\u30af\u306e\u30d6\u30ed\u30c3\u30af\u5909\u6570\u306b\u914d\u5217\u3092\u4e26\u3073\u66ff\u3048\u308b\u305f\u3081\u306b\u6bd4\u8f03\u3059\u308b2\u8981\u7d20\u304c\u4e0e\u3048\u3089\u308c\u307e\u3059\u3002\u3053\u306e2\u8981\u7d20\u306e\u6bd4\u8f03\u57fa\u6e96\u3092\u5909\u3048\u308b\u3053\u3068\u3067\u3001\u597d\u304d\u306a\u9806\u756a\u3067sort\u3067\u304d\u307e\u3059\u3002\u3053\u3053\u3067\u306f\u3001sort\u306e\u4e26\u3073\u66ff\u3048\u306e\u5177\u4f53\u7684\u306a\u4f8b\u3068\u3057\u3066\u3001\u914d\u5217\u306e\u8981\u7d20\u3092<b>\u964d\u9806\u306b\u4e26\u3073\u66ff\u3048\u308b<\/b>\u30b3\u30fc\u30c9\u3092\u7d39\u4ecb\u3057\u307e\u3059\u3002<\/p>\n<pre class=\"lang:ruby decode:true \">array.sort {|a, b| \r\n  b &lt;=&gt; a \r\n}<\/pre>\n<p>\u4e0a\u8a18\u30b3\u30fc\u30c9\u3067\u3001\u30d6\u30ed\u30c3\u30af\u306e\u8fd4\u308a\u5024\u306f\u300cb &lt;=&gt; a \u300d\u3067\u3059\u3002\u300cb &lt;=&gt; a \u300d\u306f\u3001b\u304ca\u3088\u308a\u5927\u304d\u3044\u3068\u304d\u306b1\u3092\u8fd4\u3057\u3001b\u304ca\u3088\u308a\u5c0f\u3055\u3044\u3068\u304d\u306b-1\u3092\u8fd4\u3057\u307e\u3059\u3002b\u3068a\u304c\u7b49\u3057\u3044\u3068\u304d\u306f0\u3092\u8fd4\u3057\u307e\u3059\u3002<\/p>\n<p>\u3053\u306e\u8fd4\u5024\u306b\u3088\u308a\u3001sort\u30e1\u30bd\u30c3\u30c9\u4e2d\u3067b\u304c\u5927\u304d\u3044\u3068\u304d\u306bb\u3092\u305d\u306e\u307e\u307e\u306e\u9806\u756a\u306b\u7f6e\u3044\u305f\u307e\u307e\u306b\u3057\u3001b\u304c\u5c0f\u3055\u3044\u3068\u304d\u306bb\u3068a\u306e\u9806\u756a\u3092\u5165\u308c\u66ff\u3048\u307e\u3059\u3002b\u3068a\u304c\u7b49\u3057\u3044\u3068\u304d\u306b\u306f\u4f55\u3082\u3057\u307e\u305b\u3093\u3002\u3053\u306esort\u306e\u6319\u52d5\u306b\u3088\u308a\u3001\u7d50\u679c\u7684\u306b\u914d\u5217\u304c<span style=\"color: #0000ff;\"><strong>\u964d\u9806\u306b\u4e26\u3073\u66ff\u3048<\/strong><\/span>\u3089\u308c\u307e\u3059\u3002<\/p>\n<p>\u3053\u306e\u4f8b\u306fsort\u306e\u4e00\u4f8b\u3067\u3059\u304c\u3001\u4f8b\u3048\u3070\u300ca &lt;=&gt; b\u300d\u3068\u3057\u305f\u5834\u5408\u306f\u3001\u914d\u5217\u304c<b>\u6607\u9806\u306b\u4e26\u3073\u66ff\u3048<\/b>\u3089\u308c\u307e\u3059\u3002<\/p>\n<p>\u5b9f\u969b\u306e\u30b5\u30f3\u30d7\u30eb\u30b3\u30fc\u30c9\u3092\u307f\u3066\u3044\u304d\u307e\u3057\u3087\u3046\u3002<\/p>\n<pre class=\"lang:ruby decode:true \"># \u5358\u306bsort\u30e1\u30bd\u30c3\u30c9\u3092\u547c\u3073\u51fa\u305b\u3070\u6607\u9806\u30bd\u30fc\u30c8\u304c\u884c\u308f\u308c\u308b\r\narray = [3, 2, 4, 8, 5, 10, 1, 9, 6, 7]\r\nputs \"No.1:\" + array.sort.to_s\r\n \r\n# \u30d6\u30ed\u30c3\u30af\u5909\u6570\u306bsort\u7528\u306e2\u8981\u7d20\u3092\u53d7\u3051\u53d6\u308c\u3070\u3001\u305d\u306e\u6bd4\u8f03\u7d50\u679c\u3092sort\u306e\u57fa\u6e96\u306b\u3059\u308b\r\n# \u3053\u3053\u3067\u306f\u3001b &lt;=&gt; a \u306b\u3088\u308a\u3001\u964d\u9806sort\u306b\u306a\u308b\r\narray = [\"Samurai\", \"Ruby\", \"Rails\", \"Swift\", \"Java\", \"PHP\"]\r\nputs \"No.2:\" + (array.sort {|a, b| b &lt;=&gt; a }).to_s<\/pre>\n<p>\u5b9f\u884c\u7d50\u679c\uff1a<\/p>\n<pre class=\"striped:false marking:false ranges:false nums:false nums-toggle:false lang:default decode:true \">No.1:[1, 2, 3, 4, 5, 6, 7, 8, 9, 10]\r\nNo.2:[\"Swift\", \"Samurai\", \"Ruby\", \"Rails\", \"PHP\", \"Java\"]<\/pre>\n<p>\u4ee5\u4e0a\u306e\u3088\u3046\u306b\u3001sort\u30e1\u30bd\u30c3\u30c9\u306b\u3088\u308a<span style=\"color: #0000ff;\"><strong>\u6607\u9806<\/strong><\/span>\u306b\u914d\u5217\u304c\u4e26\u3073\u66ff\u3048\u3089\u308c\u307e\u3059\u3002<\/p>\n<p>\u307e\u305f\u3001sort\u30e1\u30bd\u30c3\u30c9\u306b\u30d6\u30ed\u30c3\u30af\u3092\u6e21\u3059\u3053\u3068\u306b\u3088\u308a\u3001\u597d\u304d\u306a\u9806\u756a\u3067\u914d\u5217\u3092\u4e26\u3073\u66ff\u3048\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u5225\u306e\u65b9\u6cd5\u3067\u914d\u5217\u3092\u597d\u304d\u306a\u9806\u756a\u3067\u4e26\u3073\u66ff\u3048\u308b\u65b9\u6cd5\u3068\u3057\u3066\u3001sort_by\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<p>sort_by\u3067\u306f\u4e26\u3073\u66ff\u3048\u308b\u8981\u7d20\u3092\u30d6\u30ed\u30c3\u30af\u5f15\u6570\u3068\u3057\u3066\u53d7\u3051\u53d6\u308a\u307e\u3059\u3002\u305d\u306e\u30d6\u30ed\u30c3\u30af\u306e\u8fd4\u5024\u3067\u3001\u4e26\u3073\u66ff\u3048\u308b\u57fa\u6e96\u3068\u306a\u308b\u5024\u3092\u6307\u5b9a\u3059\u308b\u3053\u3068\u3067\u3001\u305d\u306e\u57fa\u6e96\u3067\u4e26\u3073\u66ff\u3048\u3089\u308c\u307e\u3059\u3002<\/p>\n<p>\u4ee5\u4e0b\u306e\u30b5\u30f3\u30d7\u30eb\u30b3\u30fc\u30c9\u3067\u306f\u3001\u6587\u5b57\u5217\u306e\u9577\u3055\u3092\u57fa\u6e96\u306b\u3057\u3066\u6607\u9806\u3067\u4e26\u3073\u66ff\u3048\u3066\u3044\u307e\u3059\u3002<\/p>\n<pre class=\"lang:ruby decode:true \">array = [\"Samurai\", \"Ruby\", \"Rails\", \"PHP\"]\r\n\r\n# sort_by \u306e\u30d6\u30ed\u30c3\u30af\u306e\u8fd4\u5024\u304csort\u57fa\u6e96\u306b\u306a\u308b\r\n# \u3053\u3053\u3067\u306f\u6587\u5b57\u5217\u306e\u9577\u3055\u3092sort\u57fa\u6e96\u306b\u3057\u3066\u3044\u308b\r\nputs \"No.1:\" + (array.sort_by {|a|  a.size }).to_s<\/pre>\n<p>\u5b9f\u884c\u7d50\u679c\uff1a<\/p>\n<pre class=\"striped:false marking:false ranges:false nums:false nums-toggle:false lang:default decode:true \">No.1:[\"PHP\", \"Ruby\", \"Rails\", \"Samurai\"]<\/pre>\n<p>\u4ee5\u4e0a\u306e\u3088\u3046\u306b\u3001sort_by\u306e\u30d6\u30ed\u30c3\u30af\u5f15\u6570a\u306b\u5bfe\u3057\u3001a.size\u3068\u6587\u5b57\u5217\u9577\u3092\u30d6\u30ed\u30c3\u30af\u306e\u8fd4\u5024\u306b\u6307\u5b9a\u3059\u308b\u3053\u3068\u3067\u3001\u914d\u5217\u306e\u4e26\u3073\u66ff\u3048\u306e\u57fa\u6e96\u3092\u6587\u5b57\u5217\u9577\u306e\u6607\u9806\u306b\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<h3>\u914d\u5217\u306eeach\u30e1\u30bd\u30c3\u30c9<\/h3>\n<p>\u914d\u5217\u306e\u8981\u7d20\u3092\uff11\u3064\uff11\u3064\u305a\u3064\u30eb\u30fc\u30d7\u3055\u305b\u3066\u3001\u5404\u30eb\u30fc\u30d7\u3067\u30d6\u30ed\u30c3\u30af\u3092\u5b9f\u884c\u3055\u305b\u308b\u65b9\u6cd5\u3068\u3057\u3066each\u30e1\u30bd\u30c3\u30c9\u304c\u3042\u308a\u307e\u3059\u3002each\u30e1\u30bd\u30c3\u30c9\u306f\u914d\u5217\u306e\u8981\u7d20\u6570\u5206\u3001\u7e70\u308a\u8fd4\u3057\u5b9f\u884c\u3055\u308c\u307e\u3059\u3002<\/p>\n<p>\u305d\u306e\u969b\u3001each\u30e1\u30bd\u30c3\u30c9\u306e\u30d6\u30ed\u30c3\u30af\u306e\u30d6\u30ed\u30c3\u30af\u5909\u6570\u306b\u3001\u914d\u5217\u306e\uff11\u3064\u306e\u8981\u7d20\u304c\u4e0e\u3048\u3089\u308c\u307e\u3059\u3002\u3053\u306e\u6a5f\u80fd\u3092\u4f7f\u3063\u3066\u3001\u914d\u5217\u306e\u8981\u7d20\u3092\uff11\u3064\uff11\u3064puts\u30e1\u30bd\u30c3\u30c9\u3067\u51fa\u529b\u3057\u305f\u4f8b\u304c\u3001\u4ee5\u4e0b\u306e\u30b5\u30f3\u30d7\u30eb\u30b3\u30fc\u30c9\u3067\u3059\u3002<\/p>\n<pre class=\"lang:ruby decode:true \">array = [\"Samurai\", \"Ruby\", \"Rails\", \"Swift\", \"Java\", \"PHP\"]\r\ncnt = 1\r\narray.each {|item| \r\n  puts \"No.#{cnt}:\" + item.to_s\r\n  cnt += 1\r\n}<\/pre>\n<p>\u5b9f\u884c\u7d50\u679c\uff1a<\/p>\n<pre class=\"striped:false marking:false ranges:false nums:false nums-toggle:false lang:default decode:true \">No.1:Samurai\r\nNo.2:Ruby\r\nNo.3:Rails\r\nNo.4:Swift\r\nNo.5:Java\r\nNo.6:PHP<\/pre>\n<p>\u4ee5\u4e0a\u306e\u3088\u3046\u306b\u3001each\u30e1\u30bd\u30c3\u30c9\u306b\u3088\u308a\u914d\u5217\u306e\u8981\u7d20\u304c\uff11\u3064\uff11\u3064\u30d6\u30ed\u30c3\u30af\u306e\u30d6\u30ed\u30c3\u30af\u5f15\u6570\u306b\u4e0e\u3048\u3089\u308c\u3001\u30d6\u30ed\u30c3\u30af\u304c\u5404\u8981\u7d20\u5206\u3060\u3051\u5b9f\u884c\u3055\u308c\u307e\u3059\u3002\u305d\u306e\u30d6\u30ed\u30c3\u30af\u306e\u30b3\u30fc\u30c9\u306f\u81ea\u7531\u306b\u8a18\u8ff0\u304c\u53ef\u80fd\u3067\u3001\u914d\u5217\u306e\u8981\u7d20\u3054\u3068\u306b\u5b9f\u884c\u3059\u308b\u30b3\u30fc\u30c9\u3092\u30ab\u30b9\u30bf\u30de\u30a4\u30ba\u3067\u304d\u307e\u3059\u3002<\/p>\n<h2>\u307e\u3068\u3081<\/h2>\n<p>\u4eca\u56de\u306f\u3001Ruby\u306e\u914d\u5217\u306e\u57fa\u672c\u6587\u6cd5\u306b\u3064\u3044\u3066\u5b66\u7fd2\u3057\u307e\u3057\u305f\uff01<\/p>\n<p>\u5b66\u7fd2\u306e\u30dd\u30a4\u30f3\u30c8\u3092\u632f\u308a\u8fd4\u3063\u3066\u307f\u307e\u3057\u3087\u3046\uff01<\/p>\n<ul>\n<li>\u914d\u5217\u306f\u30ea\u30c6\u30e9\u30eb\u8868\u73fe\u3068\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u8868\u73fe\u304c\u3042\u308b<\/li>\n<li>\u914d\u5217\u306f\u30ea\u30c6\u30e9\u30eb\u3084Array.new\u30e1\u30bd\u30c3\u30c9\u3067\u521d\u671f\u5316\u3067\u304d\u308b<\/li>\n<li>\u914d\u5217\u306e\u8981\u7d20\u306f\u53d6\u5f97\u30fb\u8ffd\u52a0\u30fb\u66f4\u65b0\u30fb\u524a\u9664\u3067\u304d\u308b<\/li>\n<li>\u914d\u5217\u306e\u8981\u7d20\u306e\u8ffd\u52a0\u30fb\u524a\u9664\u306fpush\u3001pop\u3001unshift\u3001shift\u30e1\u30bd\u30c3\u30c9\u3067\u5b9f\u884c\u3067\u304d\u308b<\/li>\n<li>\u914d\u5217\u306e\u8981\u7d20\u306fsort\u3001sort_by\u30e1\u30bd\u30c3\u30c9\u3067\u4e26\u3073\u66ff\u3048\u3067\u304d\u308b<\/li>\n<li>\u914d\u5217\u306e\u8981\u7d20\u3092\uff11\u3064\uff11\u3064\u6570\u3048\u4e0a\u3052\u3066\u30d6\u30ed\u30c3\u30af\u3092\u5b9f\u884c\u3067\u304d\u308b<\/li>\n<\/ul>\n<p>\u4ee5\u4e0a\u306e\u5185\u5bb9\u3092\u518d\u78ba\u8a8d\u3057\u3001\u305c\u3072\u81ea\u5206\u306e\u30d7\u30ed\u30b0\u30e9\u30e0\u306b\u751f\u304b\u3057\u5b66\u7fd2\u3092\u9032\u3081\u3066\u304f\u3060\u3055\u3044\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Ruby\u306eArray(\u914d\u5217)\u306e\u4f7f\u3044\u65b9\u3092\u624b\u3063\u53d6\u308a\u65e9\u304f\u77e5\u308a\u305f\u3044 Ruby\u306e\u914d\u5217\u3067\u8981\u7d20\u3092\u8ffd\u52a0\u3059\u308b\u306b\u306f\u3069\u3046\u3059\u308c\u3070\u3044\u3044\u306e\uff1f Ruby\u306e\u914d\u5217\u3067\u5404\u8981\u7d20\u3092\u53d6\u5f97\u3059\u308b\u65b9\u6cd5\u3092\u77e5\u308a\u305f\u3044 \u3053\u3093\u306b\u3061\u306f\u3002\u30d5\u30ea\u30fc\u30e9\u30f3\u30b9\u306eWeb\u30b3\u30fc\u30c0\u30fc\u30fb\u30d7\u30ed\u30b0\u30e9\u30de\u30fc\u3068\u3057 [&hellip;]<\/p>\n","protected":false},"author":4,"featured_media":92173,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"inline_featured_image":false,"swell_btn_cv_data":"","footnotes":""},"categories":[2352],"tags":[552,67,49,114],"class_list":["post-11406","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-ruby-study","tag-array","tag-java","tag-python","tag-ruby"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.3 - 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