- \n
- List\u3068\u306f<\/b><\/li>\n
- List\u3068ArrayList\u3068\u306e\u9055\u3044\u306f\uff1f<\/b><\/li>\n
- List\u306e\u8981\u7d20\u306e\u8ffd\u52a0\u3068\u524a\u9664\u3092\u3059\u308b\u65b9\u6cd5<\/b><\/li>\n
- List\u3092\u30bd\u30fc\u30c8\u3059\u308b\u65b9\u6cd5<\/b><\/li>\n
- List\u306e\u8981\u7d20\u3092\u691c\u7d22\u3059\u308b\u65b9\u6cd5<\/b><\/li>\n
- IndexOf\u3067\u8981\u7d20\u306e\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u3092\u53d6\u5f97\u3059\u308b\u65b9\u6cd5<\/b><\/li>\n
- Contains\u3067\u5024\u304c\u542b\u307e\u308c\u308b\u304b\u5224\u5b9a\u3059\u308b\u65b9\u6cd5<\/b><\/li>\n
- Find\u3067\u6761\u4ef6\u3092\u6307\u5b9a\u3057\u3066\u8981\u7d20\u3092\u691c\u7d22\u3059\u308b\u65b9\u6cd5<\/b><\/li>\n<\/ul>\n<\/div>\n
\u3068\u3044\u3046\u3088\u3046\u306b\u3001\u57fa\u672c\u7684\u306a\u5185\u5bb9\u304b\u3089\u5fdc\u7528\u7684\u306a\u4f7f\u3044\u65b9\u306b\u95a2\u3057\u3066\u3082\u89e3\u8aac\u3057\u3066\u3044\u304d\u307e\u3059\u3002\u4eca\u56de\u306f\u3053\u308c\u3089\u306e\u65b9\u6cd5\u3092\u899a\u3048\u308b\u305f\u3081\u306b\u3001List\u306e\u3055\u307e\u3056\u307e\u306a\u4f7f\u3044\u65b9\u3092\u308f\u304b\u308a\u3084\u3059\u304f\u89e3\u8aac\u3057\u307e\u3059\uff01<\/p>\n
List\u3068\u306f<\/h2>\n
\u300cList\u300d\u3068\u306f\u3001\u540c\u3058\u30c7\u30fc\u30bf\u578b\u306e\u5024\u3092\u307e\u3068\u3081\u3066\u53d6\u308a\u6271\u3046\u305f\u3081\u306e\u30e2\u30ce\u3067\u3059\u3002<\/p>\n
List\u306f\u914d\u5217\u3068\u9055\u3044\u3001\u7c21\u5358\u306b\u8981\u7d20\u3092\u8ffd\u52a0\u3057\u305f\u308a\u524a\u9664\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u308b\u30e1\u30bd\u30c3\u30c9\u304c\u7528\u610f\u3055\u308c\u3066\u3044\u307e\u3059\u3002\u305d\u306e\u305f\u3081\u3001\u8981\u7d20\u6570\u304c\u5909\u308f\u308b\u5834\u5408\u306b\u306fList\u3092\u4f7f\u3044\u307e\u3059\u3002<\/p>\n
\u300cList\u300d\u306f\u6b21\u306e\u3088\u3046\u306b\u4f7f\u7528\u3057\u307e\u3059\u3002<\/p>\n
using System;\r\nusing System.Collections.Generic;\r\n\r\nnamespace Sample\r\n{\r\n class Program\r\n {\r\n static void Main(string[] args)\r\n {\r\n var strList = new List<string>();\r\n strList.Add(\"Samurai\");\r\n strList.Add(\"Engineer\");\r\n\r\n string str1 = strList[0];\r\n string str2 = strList[1];\r\n\r\n Console.WriteLine(str1);\r\n Console.WriteLine(str2);\r\n\r\n Console.ReadKey();\r\n }\r\n }\r\n}<\/pre>\n\u5b9f\u884c\u7d50\u679c\uff1a<\/p>\n
Samurai\r\nEngineer<\/pre>\n
\u3053\u306e\u30d7\u30ed\u30b0\u30e9\u30e0\u3067\u306f\u3001List\u3092\u5ba3\u8a00\u3057\u305f\u5f8c\u306bAdd\u30e1\u30bd\u30c3\u30c9\u3067\u8981\u7d20\u3092\u8ffd\u52a0\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n
List\u306e\u8a73\u3057\u3044\u4f7f\u3044\u65b9\u3092\u3053\u308c\u304b\u3089\u89e3\u8aac\u3057\u3066\u3044\u304f\u306e\u3067\u8a18\u4e8b\u306e\u7d9a\u304d\u3092\u78ba\u8a8d\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n
List\u3068ArrayList\u3068\u306e\u9055\u3044\u306f\uff1f<\/h2>\n
\u3053\u3053\u3067\u306f\u3001\u300cArrayList\u300d\u3068\u300cList\u300d\u306e\u9055\u3044\u3092\u89e3\u8aac\u3057\u307e\u3059\u3002<\/p>\n
\u300cList\u300d\u306f\u6307\u5b9a\u3057\u305f\u30c7\u30fc\u30bf\u578b\u306e\u8981\u7d20\u3057\u304b\u683c\u7d0d\u3067\u304d\u307e\u305b\u3093\u304c\u3001\u8981\u7d20\u3092\u53d6\u308a\u51fa\u3059\u3068\u304d\u306b\u30ad\u30e3\u30b9\u30c8\u3092\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u305b\u3093\u3002\u305d\u306e\u305f\u3081\u3001\u30c7\u30fc\u30bf\u578b\u304c\u3042\u3089\u304b\u3058\u3081\u6c7a\u307e\u3063\u3066\u3044\u308b\u5834\u5408\u306b\u306f\u300cList\u300d\u3092\u4f7f\u3046\u65b9\u304c\u4fbf\u5229\u3067\u3059\u3002<\/p>\n
\u300cArrayList\u300d\u3067\u306f\u7570\u306a\u308b\u30c7\u30fc\u30bf\u578b\u304c\u683c\u7d0d\u3067\u304d\u307e\u3059\u304c\u3001\u305d\u308c\u304c\u539f\u56e0\u3067\u30c7\u30fc\u30bf\u578b\u306e\u9593\u9055\u3044\u306b\u3088\u308b\u30a8\u30e9\u30fc\u304c\u767a\u751f\u3059\u308b\u3053\u3068\u304c\u3042\u308b\u306e\u3067\u6ce8\u610f\u304c\u5fc5\u8981\u3067\u3059\u3002\u307e\u305f\u3001\u300cArrayList\u300d\u306f\u30ad\u30e3\u30b9\u30c8\u3092\u3059\u308b\u5fc5\u8981\u304c\u3042\u308b\u305f\u3081\u30b3\u30fc\u30c9\u306e\u8a18\u8ff0\u306b\u624b\u9593\u304c\u304b\u304b\u308a\u307e\u3059\u3002<\/p>\n
\u57fa\u672c\u7684\u306b\u306f\u3001\u300cArrayList\u300d\u3088\u308a\u3082\u300cList\u300d\u306e\u65b9\u304c\u4f7f\u3044\u3084\u3059\u3044\u306e\u3067\u3001\u300cList\u300d\u3092\u4f7f\u3046\u3088\u3046\u306b\u3059\u308c\u3070\u554f\u984c\u306a\u3044\u306f\u305a\u3067\u3059\uff01<\/p>\n
\u300cArrayList\u300d\u306e\u4f7f\u3044\u65b9\u306f\u6b21\u306e\u8a18\u4e8b\u3067\u8a73\u3057\u304f\u89e3\u8aac\u3057\u3066\u3044\u308b\u306e\u3067\u305c\u3072\u78ba\u8a8d\u3057\u3066\u304f\u3060\u3055\u3044\uff01<\/p>\n \n
\n\n\n![](\"https:\/\/www.sejuku.net\/blog\/wp-content\/uploads\/2018\/03\/image4-150x86.jpg\")
\n <\/div>\n \n\u3010C#\u5165\u9580\u3011ArrayList\u3068\u306f\uff1fList\u3068\u306e\u9055\u3044\u3084\u4f7f\u3044\u5206\u3051\u3092\u89e3\u8aac<\/div>\n\u66f4\u65b0\u65e5\uff1a2024\u5e745\u67086\u65e5<\/div>\n <\/div>\n <\/div>\n <\/div>\n <\/a>\n \nList\u306e\u8981\u7d20\u306e\u8ffd\u52a0\u3068\u524a\u9664\u3092\u3059\u308b(Add\/Remove)<\/h2>\n
Add\u3067\u8981\u7d20\u3092\u8ffd\u52a0\u3059\u308b\u65b9\u6cd5<\/h3>\n
\u3053\u3053\u3067\u306f\u3001List\u306b\u8981\u7d20\u3092\u8ffd\u52a0\u3059\u308b\u65b9\u6cd5\u3092\u89e3\u8aac\u3057\u307e\u3059\u3002List\u306b\u8981\u7d20\u3092\u8ffd\u52a0\u3059\u308b\u306b\u306fAdd\u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u3044\u307e\u3059\u3002<\/p>\n
Add\u30e1\u30bd\u30c3\u30c9\u306e\u4f7f\u3044\u65b9\u3092\u6b21\u306e\u30d7\u30ed\u30b0\u30e9\u30e0\u3067\u78ba\u8a8d\u3057\u3066\u307f\u307e\u3057\u3087\u3046\u3002<\/p>\n
using System;\r\nusing System.Collections.Generic;\r\n\r\nnamespace Sample\r\n{\r\n class Sample\r\n {\r\n static void Main()\r\n {\r\n var list = new List<string>();\r\n list.Add(\"Tokyo\");\r\n list.Add(\"Osaka\");\r\n list.Add(\"Nagoya\");\r\n \r\n Console.WriteLine(\"[{0}]\", string.Join(\", \", list));\r\n Console.ReadKey();\r\n }\r\n }\r\n}<\/pre>\n\u5b9f\u884c\u7d50\u679c\uff1a<\/p>\n
[Tokyo, Osaka, Nagoya]<\/pre>\n
\u3053\u306e\u30d7\u30ed\u30b0\u30e9\u30e0\u3067\u306f\u3001Add\u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u3063\u3066\u8981\u7d20\u3092\u8ffd\u52a0\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n
Add\u30e1\u30bd\u30c3\u30c9\u3067\u8981\u7d20\u3092\u8ffd\u52a0\u3059\u308b\u65b9\u6cd5\u306f\u6b21\u306e\u8a18\u4e8b\u3067\u8a73\u3057\u304f\u89e3\u8aac\u3057\u3066\u3044\u308b\u306e\u3067\u305c\u3072\u78ba\u8a8d\u3057\u3066\u304f\u3060\u3055\u3044\uff01<\/p>\n \n
\n\n\n![](\"https:\/\/www.sejuku.net\/blog\/wp-content\/uploads\/2017\/12\/add-150x86.jpg\")
\n <\/div>\n \n\u3010C#\u5165\u9580\u3011Add\u3001Remove\u3067List\u306e\u8981\u7d20\u3092\u8ffd\u52a0\u3001\u524a\u9664\u3059\u308b\u65b9\u6cd5<\/div>\n\u66f4\u65b0\u65e5\uff1a2024\u5e745\u67086\u65e5<\/div>\n <\/div>\n <\/div>\n <\/div>\n <\/a>\n \nRemove\u3067\u8981\u7d20\u3092\u524a\u9664\u3059\u308b\u65b9\u6cd5<\/h3>\n
\u3053\u3053\u3067\u306f\u3001List\u306e\u8981\u7d20\u3092\u524a\u9664\u3059\u308b\u65b9\u6cd5\u3092\u89e3\u8aac\u3057\u307e\u3059\u3002List\u306e\u8981\u7d20\u3092\u524a\u9664\u3059\u308b\u306b\u306fRemove\u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u3044\u307e\u3059\u3002<\/p>\n
Remove\u30e1\u30bd\u30c3\u30c9\u306e\u4f7f\u3044\u65b9\u3092\u6b21\u306e\u30d7\u30ed\u30b0\u30e9\u30e0\u3067\u78ba\u8a8d\u3057\u3066\u307f\u307e\u3057\u3087\u3046\u3002<\/p>\n
using System;\r\nusing System.Collections.Generic;\r\n\r\nnamespace Sample\r\n{\r\n class Sample\r\n {\r\n static void Main()\r\n {\r\n var list = new List<string>();\r\n list.Add(\"Tokyo\");\r\n list.Add(\"Osaka\");\r\n list.Add(\"Nagoya\");\r\n \r\n list.Remove(\"Osaka\");\r\n \r\n Console.WriteLine(\"[{0}]\", string.Join(\", \", list));\r\n Console.ReadKey();\r\n }\r\n }\r\n}<\/pre>\n\u5b9f\u884c\u7d50\u679c\uff1a<\/p>\n
[Tokyo, Nagoya]<\/pre>\n
\u3053\u306e\u30d7\u30ed\u30b0\u30e9\u30e0\u3067\u306f\u3001Remove\u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u3063\u3066\u8981\u7d20\u3092\u524a\u9664\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n
Remove\u3067\u8981\u7d20\u3092\u524a\u9664\u3059\u308b\u65b9\u6cd5\u306f\u6b21\u306e\u8a18\u4e8b\u3067\u8a73\u3057\u304f\u89e3\u8aac\u3057\u3066\u3044\u308b\u306e\u3067\u305c\u3072\u78ba\u8a8d\u3057\u3066\u304f\u3060\u3055\u3044\uff01<\/p>\n \n
\n\n\n\n <\/div>\n \n\u3010C#\u5165\u9580\u3011Add\u3001Remove\u3067List\u306e\u8981\u7d20\u3092\u8ffd\u52a0\u3001\u524a\u9664\u3059\u308b\u65b9\u6cd5<\/div>\n\u66f4\u65b0\u65e5\uff1a2024\u5e745\u67086\u65e5<\/div>\n <\/div>\n <\/div>\n <\/div>\n <\/a>\n \nList\u3092\u30bd\u30fc\u30c8\u3059\u308b\u65b9\u6cd5<\/h2>\n
\u3053\u3053\u3067\u306f\u3001List\u3092\u30bd\u30fc\u30c8\u3059\u308b\u65b9\u6cd5\u3092\u89e3\u8aac\u3057\u307e\u3059\u3002List\u306e\u8981\u7d20\u3092\u30bd\u30fc\u30c8\u3059\u308b\u306b\u306fSort\u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u3044\u307e\u3059\u3002<\/p>\n
Sort\u30e1\u30bd\u30c3\u30c9\u306e\u4f7f\u3044\u65b9\u3092\u6b21\u306e\u30d7\u30ed\u30b0\u30e9\u30e0\u3067\u78ba\u8a8d\u3057\u3066\u307f\u307e\u3057\u3087\u3046\u3002<\/p>\n
using System;\r\nusing System.Collections.Generic;\r\n\r\nnamespace Sample\r\n{\r\n class Sample\r\n {\r\n static void Main()\r\n {\r\n int[] src = {3, 1, 5, 4, 2};\r\n var list = new List<int>();\r\n \r\n \/\/ list\u306b\u8981\u7d20\u3092\u8ffd\u52a0\r\n list.AddRange(src);\r\n \r\n \/\/ list\u3092\u30bd\u30fc\u30c8\r\n list.Sort();\r\n \r\n Console.WriteLine(\"[{0}]\", string.Join(\", \", list));\r\n Console.ReadKey();\r\n }\r\n }\r\n}<\/pre>\n\u5b9f\u884c\u7d50\u679c\uff1a<\/p>\n
[1, 2, 3, 4, 5]<\/pre>\n
\u3053\u306e\u30d7\u30ed\u30b0\u30e9\u30e0\u3067\u306f\u3001AddRange\u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u3063\u3066List\u306b\u914d\u5217\u306e\u8981\u7d20\u3092\u8ffd\u52a0\u3057\u3066\u3044\u307e\u3059\u3002\u305d\u3057\u3066\u3001Sort\u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u3063\u3066List\u306e\u8981\u7d20\u3092\u6607\u9806\u306b\u4e26\u3073\u66ff\u3048\u3066\u3044\u307e\u3059\u3002<\/p>\n
List\u3092\u30bd\u30fc\u30c8\u3059\u308b\u65b9\u6cd5\u306f\u6b21\u306e\u8a18\u4e8b\u3067\u8a73\u3057\u304f\u89e3\u8aac\u3057\u3066\u3044\u308b\u306e\u3067\u305c\u3072\u78ba\u8a8d\u3057\u3066\u304f\u3060\u3055\u3044\uff01<\/p>\n \n
\n\n\n![](\"https:\/\/www.sejuku.net\/blog\/wp-content\/uploads\/2017\/12\/sort-150x86.jpg\")
\n <\/div>\n \n\u3010C#\u5165\u9580\u3011\u914d\u5217\u3001List\u3092\u30bd\u30fc\u30c8\u3059\u308b\u65b9\u6cd5(\u964d\u9806\u3001\u30ab\u30b9\u30bf\u30de\u30a4\u30ba\u3082\u89e3\u8aac)<\/div>\n\u66f4\u65b0\u65e5\uff1a2024\u5e745\u67086\u65e5<\/div>\n <\/div>\n <\/div>\n <\/div>\n <\/a>\n \nList\u306e\u8981\u7d20\u3092\u691c\u7d22\u3059\u308b\u65b9\u6cd5<\/h2>\n
List\u306e\u8981\u7d20\u3092\u691c\u7d22\u3057\u3066\u3001\u76ee\u7684\u306e\u8981\u7d20\u3092\u63a2\u3059\u306b\u306f\u3044\u304f\u3064\u304b\u306e\u65b9\u6cd5\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n
\u6761\u4ef6\u306b\u4e00\u81f4\u3059\u308b\u8981\u7d20\u306e\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u3092\u53d6\u5f97\u3059\u308b\u306b\u306fIndexOf\u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u3044\u3001\u8981\u7d20\u304c\u542b\u307e\u308c\u3066\u3044\u308b\u3069\u3046\u304b\u3092\u5224\u5b9a\u3059\u308b\u306b\u306fContains\u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u3044\u307e\u3059\u3002<\/p>\n
\u307e\u305f\u3001\u3088\u308a\u7d30\u304b\u3044\u6761\u4ef6\u3067\u8981\u7d20\u3092\u691c\u7d22\u3059\u308b\u306b\u306fFind\u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u3044\u307e\u3059\u3002<\/p>\n
\u305d\u308c\u305e\u308c\u306e\u691c\u7d22\u65b9\u6cd5\u306e\u9055\u3044\u306b\u3064\u3044\u3066\u306f\u6b21\u306e\u8a18\u4e8b\u3067\u8a73\u3057\u304f\u89e3\u8aac\u3057\u3066\u3044\u308b\u306e\u3067\u3001\u305c\u3072\u78ba\u8a8d\u3057\u3066\u304f\u3060\u3055\u3044\uff01<\/p>\n \n
\n\n\n![](\"https:\/\/www.sejuku.net\/blog\/wp-content\/uploads\/2018\/03\/image-1-150x86.jpg\")
\n <\/div>\n \n\u3010C#\u5165\u9580\u3011List\u306e\u8981\u7d20\u3092\u691c\u7d22\u3059\u308b\u65b9\u6cd5\u7dcf\u307e\u3068\u3081(Find\/IndexOf\/Contains)<\/div>\n\u66f4\u65b0\u65e5\uff1a2024\u5e745\u67086\u65e5<\/div>\n <\/div>\n <\/div>\n <\/div>\n <\/a>\n \nIndexOf\u3067\u8981\u7d20\u306e\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u3092\u53d6\u5f97\u3059\u308b\u65b9\u6cd5<\/h3>\n
List\u306e\u8981\u7d20\u3092\u691c\u7d22\u3057\u3066\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u3092\u53d6\u5f97\u3059\u308b\u306b\u306f\u3001IndexOf\u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u3044\u307e\u3059\u3002<\/p>\n
IndexOf\u30e1\u30bd\u30c3\u30c9\u306e\u4f7f\u3044\u65b9\u3092\u6b21\u306e\u30d7\u30ed\u30b0\u30e9\u30e0\u3067\u78ba\u8a8d\u3057\u3066\u307f\u307e\u3057\u3087\u3046\u3002<\/p>\n
using System;\r\n\r\nnamespace Sample\r\n{\r\n class Sample\r\n {\r\n static void Main()\r\n {\r\n string str = \"Hello World!\";\r\n string target = \"l\";\r\n \r\n int num = str.IndexOf(target) + 1;\r\n \r\n if(num > 0) {\r\n Console.WriteLine(\"{0}\u306f{1}\u756a\u76ee\u306b\u3042\u308a\u307e\u3059\", target, num); \r\n } else {\r\n Console.WriteLine(\"{0}\u306f\u898b\u3064\u304b\u308a\u307e\u305b\u3093\u3067\u3057\u305f\", target);\r\n }\r\n \r\n Console.ReadKey();\r\n }\r\n }\r\n}<\/pre>\n\u5b9f\u884c\u7d50\u679c\uff1a<\/p>\n
l\u306f3\u756a\u76ee\u306b\u3042\u308a\u307e\u3059<\/pre>\n
\u3053\u306e\u30b5\u30f3\u30d7\u30eb\u30b3\u30fc\u30c9\u3067\u306f\u3001IndexOf\u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u3063\u3066”l”\u3092\u691c\u7d22\u3057\u3001\u305d\u306e\u4f4d\u7f6e\u3092\u53d6\u5f97\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n
IndexOf\u30e1\u30bd\u30c3\u30c9\u3067\u8981\u7d20\u306e\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u3092\u53d6\u5f97\u3059\u308b\u65b9\u6cd5\u306f\u6b21\u306e\u8a18\u4e8b\u3067\u8a73\u3057\u304f\u89e3\u8aac\u3057\u3066\u3044\u308b\u306e\u3067\u3001\u305c\u3072\u78ba\u8a8d\u3057\u3066\u304f\u3060\u3055\u3044\uff01<\/p>\n \n
\n\n\n![](\"https:\/\/www.sejuku.net\/blog\/wp-content\/uploads\/2018\/01\/C_IndexOf-150x86.jpg\")
\n <\/div>\n \n\u3010C#\u5165\u9580\u3011IndexOf\u3067\u6587\u5b57\u5217\u3084List\u3001\u914d\u5217\u3092\u691c\u7d22\u3059\u308b\u65b9\u6cd5<\/div>\n\u66f4\u65b0\u65e5\uff1a2024\u5e745\u67086\u65e5<\/div>\n <\/div>\n <\/div>\n <\/div>\n <\/a>\n \nContains\u3067\u5024\u304c\u542b\u307e\u308c\u308b\u304b\u5224\u5b9a\u3059\u308b\u65b9\u6cd5<\/h3>\n
List\u306e\u8981\u7d20\u3092\u691c\u7d22\u3057\u3066\u5024\u304c\u542b\u307e\u308c\u308b\u304b\u3069\u3046\u304b\u3092\u5224\u5b9a\u3059\u308b\u306b\u306f\u3001Contains\u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u3044\u307e\u3059\u3002<\/p>\n
Contains\u30e1\u30bd\u30c3\u30c9\u306e\u4f7f\u3044\u65b9\u3092\u6b21\u306e\u30d7\u30ed\u30b0\u30e9\u30e0\u3067\u78ba\u8a8d\u3057\u3066\u307f\u307e\u3057\u3087\u3046\u3002<\/p>\n
using System;\r\n\r\nnamespace Sample\r\n{\r\n class Sample\r\n {\r\n static void Main()\r\n {\r\n string str = \"Hello World!\";\r\n string target = \"W\";\r\n \r\n if(str.Contains(target)) {\r\n Console.WriteLine(\"{0}\u304c\u898b\u3064\u304b\u308a\u307e\u3057\u305f\", target); \r\n } else {\r\n Console.WriteLine(\"{0}\u306f\u898b\u3064\u304b\u308a\u307e\u305b\u3093\u3067\u3057\u305f\", target);\r\n }\r\n \r\n Console.ReadKey();\r\n }\r\n }\r\n}<\/pre>\n\u5b9f\u884c\u7d50\u679c\uff1a<\/p>\n
W\u304c\u898b\u3064\u304b\u308a\u307e\u3057\u305f<\/pre>\n
\u3053\u306e\u30b5\u30f3\u30d7\u30eb\u30b3\u30fc\u30c9\u3067\u306f\u3001Contains\u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u3063\u3066”W”\u304c\u542b\u307e\u308c\u308b\u304b\u78ba\u8a8d\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n
Contains\u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u3063\u3066\u5024\u304c\u542b\u307e\u308c\u308b\u304b\u3092\u5224\u5b9a\u3059\u308b\u65b9\u6cd5\u306f\u6b21\u306e\u8a18\u4e8b\u3067\u8a73\u3057\u304f\u89e3\u8aac\u3057\u3066\u3044\u308b\u306e\u3067\u3001\u305c\u3072\u78ba\u8a8d\u3057\u3066\u304f\u3060\u3055\u3044\uff01<\/p>\n \n
\n\n\n![](\"https:\/\/www.sejuku.net\/blog\/wp-content\/uploads\/2018\/01\/image-12-150x86.jpg\")
\n <\/div>\n \n\u3010C#\u5165\u9580\u3011Contains\u3067\u5024\u304c\u542b\u307e\u308c\u308b\u304b\u8abf\u3079\u308b\u65b9\u6cd5(\u6587\u5b57\u5217\/\u914d\u5217\/List)<\/div>\n\u66f4\u65b0\u65e5\uff1a2024\u5e745\u67086\u65e5<\/div>\n <\/div>\n <\/div>\n <\/div>\n <\/a>\n \nFind\u3067\u6761\u4ef6\u3092\u6307\u5b9a\u3057\u3066\u8981\u7d20\u3092\u691c\u7d22\u3059\u308b\u65b9\u6cd5<\/h3>\n
List\u306e\u8981\u7d20\u3092\u691c\u7d22\u3057\u3066\u3001\u6761\u4ef6\u306b\u4e00\u81f4\u3059\u308b\u8981\u7d20\u3092\u53d6\u5f97\u3059\u308b\u306b\u306fFind\u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u3044\u307e\u3059\u3002<\/p>\n
Find\u30e1\u30bd\u30c3\u30c9\u306e\u4f7f\u3044\u65b9\u3092\u6b21\u306e\u30d7\u30ed\u30b0\u30e9\u30e0\u3067\u78ba\u8a8d\u3057\u3066\u307f\u307e\u3057\u3087\u3046\u3002<\/p>\n
using System;\r\nusing System.Collections.Generic;\r\n\r\nnamespace Sample\r\n{\r\n class Program\r\n {\r\n static void Main(string[] args)\r\n {\r\n var list = new List<int> { 1, 2, 3, 7, 8, 9 };\r\n\r\n int result = list.Find(n => n % 2 == 0);\r\n\r\n Console.WriteLine(result);\r\n Console.ReadKey();\r\n }\r\n }\r\n}<\/pre>\n\u5b9f\u884c\u7d50\u679c\uff1a<\/p>\n
2<\/pre>\n
\u3053\u306e\u30d7\u30ed\u30b0\u30e9\u30e0\u3067\u306f\u3001Find\u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u3063\u3066List\u306e\u4e2d\u304b\u3089\u5076\u6570\u306e\u5024\u3092\u691c\u7d22\u3057\u3066\u3001\u6700\u521d\u306b\u898b\u3064\u304b\u3063\u305f\u300c2\u300d\u3092\u8868\u793a\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n
Find\u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u3063\u3066\u6761\u4ef6\u3092\u6307\u5b9a\u3057\u3066\u8981\u7d20\u3092\u691c\u7d22\u3059\u308b\u65b9\u6cd5\u306f\u6b21\u306e\u8a18\u4e8b\u3067\u8a73\u3057\u304f\u89e3\u8aac\u3057\u3066\u3044\u308b\u306e\u3067\u3001\u305c\u3072\u78ba\u8a8d\u3057\u3066\u304f\u3060\u3055\u3044\uff01<\/p>\n \n
\n\n\n![](\"https:\/\/www.sejuku.net\/blog\/wp-content\/uploads\/2018\/03\/image-150x86.jpg\")
\n <\/div>\n \n\u3010C#\u5165\u9580\u3011List\u306e\u8981\u7d20\u3092\u691c\u7d22\u3059\u308bFind\u306e\u4f7f\u3044\u65b9(FindAll\/FindIndex)<\/div>\n\u66f4\u65b0\u65e5\uff1a2024\u5e745\u67086\u65e5<\/div>\n <\/div>\n <\/div>\n <\/div>\n <\/a>\n \n\u672c\u683c\u7684\u306bC\uff03\u3092\u5b66\u7fd2\u3059\u308b\u306a\u3089\u4f8d\u30a8\u30f3\u30b8\u30cb\u30a2<\/h2>\n
\u4eca\u56de\u3054\u7d39\u4ecb\u3057\u305fList\u306e\u4f7f\u3044\u65b9\u306a\u3069\u3001C\uff03\u3092\u5b66\u7fd2\u3057\u3066\u3044\u304f\u4e0a\u3067\u899a\u3048\u308b\u3079\u304d\u3053\u3068\u3084\u8abf\u3079\u308b\u3079\u304d\u3053\u3068\u306f\u305f\u304f\u3055\u3093\u51fa\u3066\u304f\u308b\u3068\u601d\u3044\u307e\u3059\u3002<\/p>\n
\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u3067\u691c\u7d22\u3059\u308c\u3070\u5fc5\u8981\u306a\u60c5\u5831\u3092\u5f97\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u304c\u3001\u5fdc\u7528\u3084\u7d30\u304b\u3044\u90e8\u5206\u306f\u81ea\u5206\u3067\u8abf\u3079\u306a\u304f\u3061\u3083\u306a\u3089\u306a\u3044\u3067\u3059\u3088\u306d\u3002\u305d\u3053\u3067\u6d3b\u7528\u3057\u305f\u3044\u306e\u304c\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u30b9\u30af\u30fc\u30eb\u3067\u3059\u3002<\/p>\n
\u5f0a\u793e\u300c\u4f8d\u30a8\u30f3\u30b8\u30cb\u30a2\u300d\u3067\u306f\u3001\u73fe\u5f79\u30a8\u30f3\u30b8\u30cb\u30a2\u3067\u3082\u3042\u308b\u8b1b\u5e2b\u304c\u6700\u5f8c\u307e\u3067\u5909\u308f\u3089\u305a\u306b\u3042\u306a\u305f\u306e\u5b66\u7fd2\u3092\u30b5\u30dd\u30fc\u30c8\u81f4\u3057\u307e\u3059\u3002\u305d\u306e\u305f\u3081\u3001\u3042\u306a\u305f\u306e\u8e93\u304d\u3084\u3059\u3044\u30dd\u30a4\u30f3\u30c8\u306a\u3069\u3092\u4e8b\u524d\u306b\u628a\u63e1\u3057\u3066\u5b66\u7fd2\u304c\u30b9\u30e0\u30fc\u30ba\u306b\u9032\u3080\u3088\u3046\u5fb9\u5e95\u30b5\u30dd\u30fc\u30c8\u3002<\/p>\n
\u307e\u305f\u3001\u3042\u306a\u305f\u306e\u76ee\u7684\u306b\u5408\u308f\u305b\u305f\u30aa\u30fc\u30c0\u30fc\u30e1\u30a4\u30c9\u30ab\u30ea\u30ad\u30e5\u30e9\u30e0\u306b\u3088\u3063\u3066\u3001\u5fc5\u8981\u306a\u30b9\u30ad\u30eb\u3060\u3051\u3092\u8eab\u306b\u4ed8\u3051\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n
\u3067\u3059\u304c\u3001\u3044\u304d\u306a\u308a\u30b9\u30af\u30fc\u30eb\u306b\u901a\u3046\u306e\u306f\u4e0d\u5b89\u304c\u3042\u308b\u3068\u8a00\u3046\u65b9\u306f\u3001\u5f0a\u793e\u3067\u884c\u3063\u3066\u3044\u308b\u300c\u7121\u6599\u30ab\u30a6\u30f3\u30bb\u30ea\u30f3\u30b0\u300d\u3092\u53d7\u3051\u3066\u307f\u3066\u304f\u3060\u3055\u3044\u3002\u696d\u754c\u5c48\u6307\u306e\u30b3\u30f3\u30b5\u30eb\u30bf\u30f3\u30c8\u304c\u3042\u306a\u305f\u306e\u4e0d\u5b89\u3092\u89e3\u6c7a\u3057\u3066\u304f\u308c\u307e\u3059\u3002\u3053\u3093\u306a\u4eba\u306b\u304a\u3059\u3059\u3081\u3067\u3059\uff01
\n<\/p>\n- \n
- \u300c\u72ec\u5b66\u3067\u632b\u6298\u3059\u308b\u306e\u306f\u5acc\u3060\uff01\u30b9\u30af\u30fc\u30eb\u306b\u901a\u3044\u305f\u3044\u3051\u3069\u4e0d\u5b89\u300d\u3068\u601d\u3046\u65b9<\/b><\/li>\n
- C#\u304c\u81ea\u5206\u306b\u672c\u5f53\u306b\u5408\u3063\u3066\u3044\u308b\u306e\u304b\u3001\u4ed5\u4e8b\u306b\u7e4b\u304c\u308b\u306e\u304b\u76f8\u8ac7\u3057\u305f\u3044\u65b9<\/b><\/li>\n
- \u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u3092\u5b66\u3093\u3060\u3042\u3068\u3001\u4eca\u5f8c\u306e\u30ad\u30e3\u30ea\u30a2\u30d7\u30e9\u30f3\u3092\u76f8\u8ac7\u3057\u305f\u3044\u65b9<\/b><\/li>\n<\/ul>\n<\/div>\n
\u2193\u306e\u30ab\u30ec\u30f3\u30c0\u30fc\u304b\u3089\u7121\u6599\u30ab\u30a6\u30f3\u30bb\u30ea\u30f3\u30b0\u306e\u4e88\u7d04\u304c\u3067\u304d\u307e\u3059\uff01<\/p>\n
\n\n\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n <\/div>\n\u304a\u6025\u304e\u306e\u65b9\u306f\u3053\u3061\u3089<\/a>\u304b\u3089\u304a\u554f\u3044\u5408\u308f\u305b\u304f\u3060\u3055\u3044\u3002<\/p>\n <\/div>\n
\n\u8aad\u307f\u8fbc\u307f\u306b\u5931\u6557\u3057\u307e\u3057\u305f\u3002
\u5927\u5909\u304a\u624b\u6570\u3067\u3059\u304c\u3001\u672c\u30da\u30fc\u30b8\u3092\u518d\u5ea6\u8aad\u307f\u8fbc\u3093\u3067\u304f\u3060\u3055\u3044\u3002<\/p>\n\u518d\u5ea6\u8aad\u307f\u8fbc\u3093\u3067\u3082\u3001\u8aad\u307f\u8fbc\u307f\u5931\u6557\u304c\u8d77\u3053\u308b\u5834\u5408\u306f
\u3053\u3061\u3089<\/a>\u304b\u3089\u304a\u554f\u3044\u5408\u308f\u305b\u304f\u3060\u3055\u3044\u3002<\/p>\n <\/div>\n\n\n\u30ab\u30a6\u30f3\u30bb\u30ea\u30f3\u30b0\u306f\u30aa\u30f3\u30e9\u30a4\u30f3\u306b\u3066\u5b9f\u65bd\u3057\u3066\u304a\u308a\u307e\u3059\u3002<\/h2>\n
\u203b\u4e88\u7d04\u5b8c\u4e86\u5f8c\u306b\u3001\u30ab\u30a6\u30f3\u30bb\u30ea\u30f3\u30b0\u306e\u305f\u3081\u306eURL\u3084ID\u306a\u3069\u3092\u30e1\u30fc\u30eb\u306b\u3066\u3054\u6848\u5185\u3057\u307e\u3059<\/p>\n <\/div>\n\n
\n \n\n\n1.\u3054\u5e0c\u671b\u306e\u65e5\u6642\u3092\u9078\u629e\u3057\u3066\u304f\u3060\u3055\u3044<\/h2>\n <\/div>\n
\n\n \u7a7a\u304d\u3042\u308a<\/span>\n \u6e80\u5e2d<\/span>\n <\/div>\n - C#\u304c\u81ea\u5206\u306b\u672c\u5f53\u306b\u5408\u3063\u3066\u3044\u308b\u306e\u304b\u3001\u4ed5\u4e8b\u306b\u7e4b\u304c\u308b\u306e\u304b\u76f8\u8ac7\u3057\u305f\u3044\u65b9<\/b><\/li>\n
- List\u3068ArrayList\u3068\u306e\u9055\u3044\u306f\uff1f<\/b><\/li>\n