{"id":383,"date":"2024-01-20T16:29:30","date_gmt":"2024-01-20T07:29:30","guid":{"rendered":"https:\/\/ha234.rundog.org\/?p=383"},"modified":"2024-01-20T17:30:25","modified_gmt":"2024-01-20T08:30:25","slug":"%e8%ac%9b%e7%be%a9%e3%83%a1%e3%83%a2%ef%bc%9a%e5%be%8c%e5%8d%8a-3","status":"publish","type":"post","link":"https:\/\/ha234.rundog.org\/?p=383","title":{"rendered":"\u8b1b\u7fa9\u30e1\u30e2\uff1a\u5f8c\u534a"},"content":{"rendered":"<p>p.176 \u65e2\u5b58\u306e\u30af\u30e9\u30b9\u3092\u4f7f\u3063\u3066\u307f\u308b<\/p>\n<pre>\r\n\u30fb\u3053\u3053\u307e\u3067\u3067\u3001System\u3001Math\u306a\u3069\u306e\u65e2\u5b58\u306e\u30af\u30e9\u30b9\u3092\u5229\u7528\u3057\u3066\u3044\u308b\u304c\u3001\u3053\u3053\u3067\u306f\u3001\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u30e1\u30bd\u30c3\u30c9\u3092\u6301\u3064\u30af\u30e9\u30b9\u306e\u4e00\u4f8b\u3068\u3057\u3066\u3001\r\n\u3000ArrayList\u30af\u30e9\u30b9\u3092\u7528\u3044\u3088\u3046\r\n\u30fbArrayList\u30af\u30e9\u30b9\u306f\u3001\u914d\u5217\u306e\u6a5f\u80fd\u3092\u62e1\u5f35\u3057\u305f\u4ed5\u7d44\u307f\u3092\u63d0\u4f9b\u3059\u308b\u3082\u306e\u3067\u3001\u914d\u5217\u306b\u306f\u306a\u3044\u67d4\u8edf\u306a\u5229\u7528\u304c\u53ef\u80fd\r\n\u30fb\u5229\u7528\u306b\u306f\u300cusing Sytem.Collections;\u300d\u3092\u6307\u5b9a\u3059\u308b\r\n\u3000\u203b ArrayList\u30af\u30e9\u30b9\u306a\u3069\u306e\u30c7\u30fc\u30bf\u69cb\u9020\u3092\u8868\u3059\u3053\u3068\u306e\u3067\u304d\u308b\u30af\u30e9\u30b9\u3092\u30b3\u30ec\u30af\u30b7\u30e7\u30f3\u3068\u547c\u3076\r\n\u30fb\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u3092\u751f\u6210\u3059\u308b\u3068\u3001\u914d\u5217\u306b\u4f3c\u305f\u30c7\u30fc\u30bf\u69cb\u9020\u304c\u751f\u6210\u3055\u308c\u308b\u304c\u3001\u914d\u5217\u3068\u306f\u7570\u306a\u308a\u3001\u8981\u7d20\u6570\u3092\u4e8b\u524d\u306b\u6c7a\u3081\u308b\u5fc5\u8981\u304c\u306a\u304f\u3001\r\n\u3000\u52d5\u7684\u306b\u5909\u66f4\u3059\u308b\u3053\u3068\u3082\u3067\u304d\u308b\r\n\u30fb\u8981\u7d20\u306e\u8ffd\u52a0\u306b\u306f\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u30e1\u30bd\u30c3\u30c9\u306eAdd(\u30c7\u30fc\u30bf)\u3092\u7528\u3044\u3001\u8ffd\u52a0\u306b\u3057\u305f\u304c\u3063\u3066\u8981\u7d20\u6570\u304c\u62e1\u5f35\u3055\u308c\u308b\r\n\u30fb\u4ef6\u6570\u3092\u8fd4\u3059Count\u30d7\u30ed\u30d1\u30c6\u30a3\u3082\u5229\u7528\u53ef\u80fd\r\n\u3000\u203b \u30d7\u30ed\u30d1\u30c6\u30a3\u306f\u7279\u6b8a\u306a\u30e1\u30bd\u30c3\u30c9\u3067\uff18\u7ae0\u3067\u8aac\u660e\r\n\u30fb\u683c\u7d0d\u6e08\u306e\u8981\u7d20\u306f\u3001\u914d\u5217\u3068\u540c\u69d8\u306b\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u540d[\u6dfb\u5b57]\u3067\u76f4\u63a5\u30a2\u30af\u30bb\u30b9\u3067\u304d\u308b<\/pre>\n<p>p.177 arraylist01.cs<\/p>\n<pre>\r\n\/\/p.177 arraylist01.cs\r\nusing System;\r\nusing System.Collections; \/\/ArrayList\u7528\r\nclass arraylist01 {\r\n&nbsp;&nbsp;&nbsp;&nbsp;public static void Main() {\r\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;bool bEnd = false; \/\/\u7d42\u4e86\u30d5\u30e9\u30b0\u3092\u30aa\u30d5\u3067\u521d\u671f\u5316\r\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;string strData; \/\/\u8aad\u8fbc\u7528\r\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;double sum = 0.0; \/\/\u5408\u8a08\r\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;ArrayList al = new ArrayList(); \/\/ArrayList\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u751f\u6210\r\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;while (true) { \/\/\u7121\u9650\u30eb\u30fc\u30d7\r\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Console.Write(&quot;\u30c7\u30fc\u30bf(\u6570\u5024\u4ee5\u5916\u5165\u529b\u3067\u7d42\u4e86)-- &quot;);\r\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;strData = Console.ReadLine();\r\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;if (!Char.IsDigit(strData[0]) &amp;&amp; strData[0] != &#39;-&#39;) { \/\/1\u6587\u5b57\u76ee\u304c\u6570\u5b57\u3067\u306f\u306a\u304f\u30de\u30a4\u30ca\u30b9\u3067\u3082\u306a\u3044\uff1f\r\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;bEnd = true; \/\/\u7d42\u4e86\u30d5\u30e9\u30b0\u3092\u30aa\u30f3\u306b\u3059\u308b\r\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;} else { \/\/\u6570\u5b57\u307e\u305f\u306f\u30de\u30a4\u30ca\u30b9\u306a\u3089\r\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;al.Add(double.Parse(strData)); \/\/\u5b9f\u6570\u306b\u5909\u63db\u3057\u3066ArrayList\u306b\u683c\u7d0d\r\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;}\r\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;if (bEnd) { \/\/\u7d42\u4e86\u30d5\u30e9\u30b0\u304c\u30aa\u30f3\uff1f\r\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;break; \/\/\u7e70\u8fd4\u3057\u3092\u629c\u3051\u308b\r\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;}\r\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;}\r\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;for (int i = 0; i &lt; al.Count; i++) { \/\/ArrayList\u306b\u683c\u7d0d\u3057\u305f\u4ef6\u6570\u306e\u5206\u3001\u7e70\u8fd4\u3059\r\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Console.WriteLine(&quot;Data[{0}] = {1}&quot;, i + 1, al[i]); \/\/\u5024\u3092\u8868\u793a\r\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;sum += (double)al[i]; \/\/\u5408\u8a08\u306b\u8db3\u3057\u8fbc\u3080\r\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;}\r\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;int count = al.Count; \/\/ArrayList\u306b\u683c\u7d0d\u3057\u305f\u4ef6\u6570\u3092\u5f97\u308b\r\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;double avr = sum \/ count; \/\/\u5408\u8a08\u3092\u4ef6\u6570\u3067\u5272\u3063\u3066\u5e73\u5747\u5024\u3092\u5f97\u308b\r\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Console.WriteLine(&quot;\u30c7\u30fc\u30bf\u500b\u6570 = {0}&quot;, count);\r\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Console.WriteLine(&quot;\u5e73\u5747\u5024 = {0}&quot;, avr);\r\n&nbsp;&nbsp;&nbsp;&nbsp;}\r\n}<\/pre>\n<p>\u30a2\u30ec\u30f3\u30b8\u6f14\u7fd2\uff1ap.177 arraylist01.cs<\/p>\n<pre>\r\n\u30fbCount\u30d7\u30ed\u30d1\u30c6\u30a3\u3092\uff12\u56de\u547c\u3073\u51fa\u3057\u3066\u3044\u308b\u304c\u3001\uff11\u56de\u306b\u3057\u3088\u3046\r\n\u30fb\u7d42\u4e86\u30d5\u30e9\u30b0\u3092\u5ec3\u6b62\u3057\u3088\u3046<\/pre>\n<p>\u4f5c\u6210\u4f8b<\/p>\n<pre>\r\n\/\/\u30a2\u30ec\u30f3\u30b8\u6f14\u7fd2\uff1ap.177 arraylist01.cs\r\nusing System;\r\nusing System.Collections; \/\/ArrayList\u7528\r\nclass arraylist01 {\r\n&nbsp;&nbsp;&nbsp;&nbsp;public static void Main() {\r\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;string strData; \/\/\u8aad\u8fbc\u7528\r\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;double sum = 0.0; \/\/\u5408\u8a08\r\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;ArrayList al = new ArrayList(); \/\/ArrayList\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u751f\u6210\r\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;while (true) { \/\/\u7121\u9650\u30eb\u30fc\u30d7\r\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Console.Write(&quot;\u30c7\u30fc\u30bf(\u6570\u5024\u4ee5\u5916\u5165\u529b\u3067\u7d42\u4e86)-- &quot;);\r\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;strData = Console.ReadLine();\r\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;if (!Char.IsDigit(strData[0]) &amp;&amp; strData[0] != &#39;-&#39;) { \/\/1\u6587\u5b57\u76ee\u304c\u6570\u5b57\u3067\u306f\u306a\u304f\u30de\u30a4\u30ca\u30b9\u3067\u3082\u306a\u3044\uff1f\r\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;break; \/\/\u3010\u79fb\u52d5\u3011\u7e70\u8fd4\u3057\u3092\u629c\u3051\u308b\r\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;} else { \/\/\u6570\u5b57\u307e\u305f\u306f\u30de\u30a4\u30ca\u30b9\u306a\u3089\r\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;al.Add(double.Parse(strData)); \/\/\u5b9f\u6570\u306b\u5909\u63db\u3057\u3066ArrayList\u306b\u683c\u7d0d\r\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;}\r\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;}<font color=blue>\r\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;int count = al.Count; \/\/\u3010\u79fb\u52d5\u3011ArrayList\u306b\u683c\u7d0d\u3057\u305f\u4ef6\u6570\u3092\u5f97\u308b\r\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;for (int i = 0; i &lt; count; i++) { \/\/\u3010\u5909\u66f4\u3011\u4ef6\u6570\u306e\u5206\u3001\u7e70\u8fd4\u3059<\/font>\r\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Console.WriteLine(&quot;Data[{0}] = {1}&quot;, i + 1, al[i]); \/\/\u5024\u3092\u8868\u793a\r\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;sum += (double)al[i]; \/\/\u5408\u8a08\u306b\u8db3\u3057\u8fbc\u3080\r\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;}\r\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Console.WriteLine(&quot;\u30c7\u30fc\u30bf\u500b\u6570 = {0}&quot;, count);<font color=blue>\r\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Console.WriteLine(&quot;\u5e73\u5747\u5024 = {0}&quot;, sum \/ count); \/\/\u3010\u5909\u66f4\u3011\u5408\u8a08\u3092\u4ef6\u6570\u3067\u5272\u3063\u3066\u5e73\u5747\u5024\u3092\u5f97\u308b<\/font>\r\n&nbsp;&nbsp;&nbsp;&nbsp;}\r\n}<\/pre>\n<p>p.180 \u7df4\u7fd2\u554f\u984c\uff11 \u30d2\u30f3\u30c8<\/p>\n<pre>\r\n\u30fb\u30af\u30e9\u30b9\u540d\u3084\u5909\u6570\u540d\u306f\u81ea\u7531\r\n\u30fb\u4f8b\uff1a class MyClass { public int i; }\r\n\u30fb\u8aad\u307f\u3060\u3057\u305f\u5024\u306f\u78ba\u8a8d\u7528\u306b\u8868\u793a\u3059\u308b\u3068\u826f\u3044<\/pre>\n<p>\u4f5c\u6210\u4f8b<\/p>\n<pre>\r\n\/\/p.180 \u7df4\u7fd2\u554f\u984c\uff11\r\nusing System;\r\nclass MyClass { public int i; } \/\/int\u578b\u306epublic\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u5909\u6570\u306e\u307f\u3092\u6301\u3064\u30af\u30e9\u30b9\r\nclass ex0701 {\r\n&nbsp;&nbsp;&nbsp;&nbsp;public static void Main() {\r\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;MyClass mc = new MyClass(); \/\/MyClass\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u751f\u6210\r\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;mc.i = 10;\r\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Console.WriteLine(&quot;mc.i = {0}&quot;, mc.i);\r\n&nbsp;&nbsp;&nbsp;&nbsp;}\r\n}<\/pre>\n<p>p.180 \u7df4\u7fd2\u554f\u984c\uff12 \u30d2\u30f3\u30c8<\/p>\n<pre>\r\n\u30fb\u30af\u30e9\u30b9\u540d\u3084\u30e1\u30bd\u30c3\u30c9\u540d\u306f\u81ea\u7531\r\n\u30fb\u305f\u3060\u3057\u3001\u30aa\u30fc\u30d0\u30fc\u30ed\u30fc\u30c9\u306a\u306e\u3067\u3001\u540c\u3058\u30e1\u30bd\u30c3\u30c9\u540d\u3068\u3059\u308b\u3053\u3068\r\n\u30fbMain\u30e1\u30bd\u30c3\u30c9\u304b\u3089\u547c\u3073\u51fa\u3059\u305f\u3081\u306b\u3001\uff12\u3064\u306e\u30e1\u30bd\u30c3\u30c9\u306fpublic\u306b\u3059\u308b\r\n\u30fbint\u578b\u3068int\u578b\u306e\u548c\u3092\u6c42\u3081\u308b\u30e1\u30bd\u30c3\u30c9\u306f\u623b\u308a\u5024\u578b\u3082int\u306b\u3059\u308b\r\n\u30fbdouble\u578b\u3068double\u578b\u306e\u548c\u3092\u6c42\u3081\u308b\u30e1\u30bd\u30c3\u30c9\u306f\u623b\u308a\u5024\u578b\u3082double\u306b\u3059\u308b\r\n\u30fb\u7d50\u679c\u306f\u78ba\u8a8d\u7528\u306b\u8868\u793a\u3059\u308b\u3068\u826f\u3044<\/pre>\n<p>\u4f5c\u6210\u4f8b<\/p>\n<pre>\r\n\/\/p.180 \u7df4\u7fd2\u554f\u984c\uff12\r\nusing System;\r\nclass MyClass {\r\n&nbsp;&nbsp;&nbsp;&nbsp;public int sum(int a, int b) { \/\/\u30e1\u30bd\u30c3\u30c9\u2460\r\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;return a + b;\r\n&nbsp;&nbsp;&nbsp;&nbsp;}\r\n&nbsp;&nbsp;&nbsp;&nbsp;public double sum(double a, double b) { \/\/\u30e1\u30bd\u30c3\u30c9\u2461\uff1d\u2460\u306e\u30aa\u30fc\u30d0\u30fc\u30ed\u30fc\u30c9\r\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;return a + b;\r\n&nbsp;&nbsp;&nbsp;&nbsp;}\r\n}\r\nclass ex0702 {\r\n&nbsp;&nbsp;&nbsp;&nbsp;public static void Main() {\r\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;MyClass mc = new MyClass(); \/\/MyClass\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u751f\u6210\r\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Console.WriteLine(&quot;\u6574\u6570 {0} + {1} = {2}&quot;, 2, 3, mc.sum(2, 3)); \/\/\u30e1\u30bd\u30c3\u30c9\u2460\u304c\u547c\u3070\u308c\u308b\r\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Console.WriteLine(&quot;\u5b9f\u6570 {0} + {1} = {2}&quot;, 3.14, 4.99, mc.sum(3.14, 4.99)); \/\/\u30e1\u30bd\u30c3\u30c9\u2461\u304c\u547c\u3070\u308c\u308b\r\n&nbsp;&nbsp;&nbsp;&nbsp;}\r\n}<\/pre>\n<p><strong>\u7b2c\uff18\u7ae0 \u30af\u30e9\u30b9\u3068\u30e1\u30bd\u30c3\u30c9\u306e\u8a73\u7d30<\/strong><\/p>\n<p>p.181 \u30e1\u30bd\u30c3\u30c9\u306e\u518d\u5e30\u547c\u3073\u51fa\u3057<\/p>\n<pre>\r\n\u30fb\u6700\u8fd1\u306e\u30d7\u30ed\u30b0\u30e9\u30e0\u8a00\u8a9e\u3067\u306f\u3001\u3042\u308b\u30e1\u30bd\u30c3\u30c9\u306e\u4e2d\u3067\u81ea\u5206\u81ea\u8eab\u3092\u547c\u3073\u51fa\u3059\u3053\u3068\u304c\u53ef\u80fd\u3067\u3001\u3053\u308c\u3092\u518d\u5e30\u3068\u3044\u3046\u3002\r\n\u30fb\u518d\u5e30\u3092\u4e0a\u624b\u304f\u5229\u7528\u3059\u308b\u3068\u3001\u30d7\u30ed\u30b0\u30e9\u30e0\u3092\u30b7\u30f3\u30d7\u30eb\u306b\u8a18\u8ff0\u51fa\u6765\u308b\u5834\u5408\u304c\u3042\u308b\r\n\u30fb\u5358\u7d14\u306b\u81ea\u5206\u81ea\u8eab\u3092\u547c\u3073\u51fa\u3059\u3068\u547c\u3073\u51fa\u3057\u304c\u7121\u9650\u30eb\u30fc\u30d7\u3059\u308b\u306e\u3067\uff08\u3053\u308c\u4ee5\u4e0a\uff09\u81ea\u5206\u3092\u547c\u3073\u51fa\u3055\u305a\u306b\u5f0f\u3084\u5024\u3092\u8fd4\u3059\u51e6\u7f6e\u304c\u5fc5\u8981<\/pre>\n<p>p.181 \u968e\u4e57\u3092\u8a08\u7b97\u3059\u308b<\/p>\n<pre>\r\n\u30fb\u968e\u4e57\u3068\u306f\u3001\u3042\u308b\u6b63\u306e\u6574\u6570\u306b\u304a\u3044\u3066\u3001\u305d\u306e\u6570\u304b\u30891\u307e\u3067\u306e\u5168\u6574\u6570\u306e\u7a4d\r\n\u3000\u203b \u5b9f\u8cea\u7684\u306b\u306f\u305d\u306e\u6570\u304b\u30892\u307e\u3067\u306e\u5168\u6574\u6570\u306e\u7a4d\u306b\u306a\u308b\r\n\u30fb\u6574\u6570n\u306e\u968e\u4e57\u3092\u300cn!\u300d\u3067\u8868\u3057\u3001\u4f8b\u3048\u3070\u30012!\u306f2\u30013!\u306f6\u30014!\u306f24\u30015!\u306f120\u3001\u2026\r\n\u30fb\u3053\u308c\u3092\u9006\u9806\u3067\u5c55\u958b\u3059\u308b\u3068\r\n\u30005! = 5\u00d74\u00d73\u00d72\u00d71\r\n\u30004! =    4\u00d73\u00d72\u00d71\r\n\u30003! =       3\u00d72\u00d71\r\n\u30fb\u306a\u306e\u3067\u30015!=5\u00d74!\u30014!=4\u00d73! \u3067\u3042\u308b\u3053\u3068\u304b\u3089\u300cn! = n\u00d7(n-1)!\u300d\u304c\u5c0e\u3051\u308b\u3002\r\n\u30fb\u3053\u308c\u3092\u30e1\u30bd\u30c3\u30c9Fact\u306b\u3059\u308b\u3068\u3001\r\n\u3000int CalcFact(int n) { \/\/n\u306e\u968e\u4e57\r\n\u3000\u3000return n * CalcFact(n - 1); \/\/n\u00d7(n-1)!\u3092\u8fd4\u3059(\u518d\u5e30\u3059\u308b)\r\n\u3000}\r\n\u30fb\u3053\u308c\u306b\u3001\u518d\u5e30\u306e\u7d42\u4e86\u6761\u4ef6\u3068\u3057\u3066\u300c0\u306e\u968e\u4e57\u306f1\u300d\u3092\u52a0\u3048\u308b\u3068\u826f\u3044\r\n\u3000int CalcFact(int n) { \/\/n\u306e\u968e\u4e57\r\n\u3000\u3000return (n > 0) ? n * CalcFact(n - 1) : 1; \/\/n\u304c0\u8d85\u306a\u3089n\u00d7(n-1)!\u3092\u8fd4\u3059(\u518d\u5e30\u3059\u308b)\u3067\u306a\u3051\u308c\u30701\u3092\u8fd4\u3059\r\n\u3000}\r\n\u30fbp.182 fact01.cs\u306f\u4e0a\u8a18\u3092\u5c55\u958b\u3057\u305f\u30e1\u30bd\u30c3\u30c9\u306b\u306a\u3063\u3066\u3044\u308b<\/pre>\n<p>p.182 fact01.cs<\/p>\n<pre>\r\n\/\/p.182 fact01.cs\r\nusing System;\r\nclass Fact {\r\n&nbsp;&nbsp;&nbsp;&nbsp;public long CalcFact(int n) { \/\/n!\u3092\u8fd4\u3059\r\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;long fact; \/\/\u968e\u4e57\u5024\r\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;if (n == 0) { \/\/0!\u306f1\u306a\u306e\u3067\uff08\u518d\u5e30\u306e\u7d42\u4e86\u6761\u4ef6\u306b\u306a\u308b\uff09\r\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;fact = 1; \/\/1\u3092\u8fd4\u3059\r\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;} else { \/\/1\u4ee5\u4e0a\u306a\u3089\u3070\r\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;fact = n * CalcFact(n - 1); \/\/\u300cn! = n * (n - 1)!\u300d\u306b\u3088\u308a\u518d\u5e30\u3059\u308b\r\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;}\r\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;return fact; \/\/\u968e\u4e57\u5024\u3092\u8fd4\u3059\r\n&nbsp;&nbsp;&nbsp;&nbsp;}\r\n}\r\nclass fact01 {\r\n&nbsp;&nbsp;&nbsp;&nbsp;public static void Main() {\r\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Fact f = new Fact();\r\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;for (int i = 0; i &lt;= 20; i++) {\r\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Console.WriteLine(&quot;{0}! = {1}&quot;, i, f.CalcFact(i));\r\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;}\r\n&nbsp;&nbsp;&nbsp;&nbsp;}\r\n}<\/pre>\n<p>\u30a2\u30ec\u30f3\u30b8\u6f14\u7fd2\uff1ap.182 fact01.cs<\/p>\n<pre>\r\n\u30fbCalcFact(int n)\u30e1\u30bd\u30c3\u30c9\u3092\u4e0a\u8a18\u3092\u7528\u3044\u3066\u30b7\u30f3\u30d7\u30eb\u306b\u3057\u3088\u3046<\/pre>\n<p>\u63d0\u51fa\uff1a\u30a2\u30ec\u30f3\u30b8\u6f14\u7fd2\uff1ap.182 fact01.cs<\/p>\n","protected":false},"excerpt":{"rendered":"<p>p.176 \u65e2\u5b58\u306e\u30af\u30e9\u30b9\u3092\u4f7f\u3063\u3066\u307f\u308b \u30fb\u3053\u3053\u307e\u3067\u3067\u3001System\u3001Math\u306a\u3069\u306e\u65e2\u5b58\u306e\u30af\u30e9\u30b9\u3092\u5229\u7528\u3057\u3066\u3044\u308b\u304c\u3001\u3053\u3053\u3067\u306f\u3001\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u30e1\u30bd\u30c3\u30c9\u3092\u6301\u3064\u30af\u30e9\u30b9\u306e\u4e00\u4f8b\u3068\u3057\u3066\u3001 \u3000ArrayList\u30af\u30e9\u30b9\u3092\u7528\u3044\u3088\u3046 \u30fbArrayList\u30af\u30e9\u30b9\u306f\u3001\u914d\u5217\u306e\u6a5f\u80fd\u3092\u62e1\u5f35\u3057\u305f\u4ed5\u7d44\u307f\u3092\u63d0\u4f9b\u3059\u308b\u3082\u306e\u3067\u3001\u914d\u5217\u306b\u306f\u306a\u3044\u67d4\u8edf\u306a\u5229\u7528\u304c\u53ef\u80fd \u30fb\u5229\u7528\u306b\u306f\u300cusing Sytem.Collections;\u300d\u3092\u6307\u5b9a\u3059\u308b \u3000\u203b ArrayList\u30af\u30e9\u30b9\u306a\u3069\u306e\u30c7\u30fc\u30bf\u69cb\u9020\u3092\u8868\u3059\u3053\u3068\u306e\u3067\u304d\u308b\u30af\u30e9\u30b9\u3092\u30b3\u30ec\u30af\u30b7\u30e7\u30f3\u3068\u547c\u3076 \u30fb\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u3092\u751f\u6210\u3059\u308b\u3068\u3001\u914d\u5217\u306b\u4f3c\u305f\u30c7\u30fc\u30bf\u69cb\u9020\u304c\u751f\u6210\u3055\u308c\u308b\u304c\u3001\u914d\u5217\u3068\u306f\u7570\u306a\u308a\u3001\u8981\u7d20\u6570\u3092\u4e8b\u524d\u306b\u6c7a\u3081\u308b\u5fc5\u8981\u304c\u306a\u304f\u3001 \u3000\u52d5\u7684\u306b\u5909\u66f4\u3059\u308b\u3053\u3068\u3082\u3067\u304d\u308b \u30fb\u8981\u7d20\u306e\u8ffd\u52a0\u306b\u306f\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u30e1\u30bd\u30c3\u30c9\u306eAdd(\u30c7\u30fc\u30bf)\u3092\u7528\u3044\u3001\u8ffd\u52a0\u306b\u3057\u305f\u304c\u3063\u3066\u8981\u7d20\u6570\u304c\u62e1\u5f35\u3055\u308c\u308b \u30fb\u4ef6\u6570\u3092\u8fd4\u3059Count\u30d7\u30ed\u30d1\u30c6\u30a3\u3082\u5229\u7528\u53ef\u80fd \u3000\u203b \u30d7\u30ed\u30d1\u30c6\u30a3\u306f\u7279\u6b8a\u306a\u30e1\u30bd\u30c3\u30c9\u3067\uff18\u7ae0\u3067\u8aac\u660e \u30fb\u683c\u7d0d\u6e08\u306e\u8981\u7d20\u306f\u3001\u914d\u5217\u3068\u540c\u69d8\u306b\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u540d[\u6dfb\u5b57]\u3067\u76f4\u63a5\u30a2\u30af\u30bb\u30b9\u3067\u304d\u308b p.177 arraylist01.cs \/\/p.177 arraylist01.cs using System; using System.Collections; \/\/ArrayList\u7528 class arraylist01 { &nbsp;&nbsp;&nbsp;&nbsp;public static void Main() { &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;bool bEnd = false; \/\/\u7d42\u4e86\u30d5\u30e9\u30b0\u3092\u30aa\u30d5\u3067\u521d\u671f\u5316 &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;string strData; \/\/\u8aad\u8fbc\u7528 &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;double sum = 0.0; \/\/\u5408\u8a08 &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;ArrayList al = new ArrayList(); \/\/ArrayList\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u751f\u6210 &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;while (true) { \/\/\u7121\u9650\u30eb\u30fc\u30d7 &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Console.Write(&quot;\u30c7\u30fc\u30bf(\u6570\u5024\u4ee5\u5916\u5165\u529b\u3067\u7d42\u4e86)&#8211; &quot;); &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;strData = Console.ReadLine(); &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;if (!Char.IsDigit(strData[0]) &amp;&amp; strData[0] != &#39;-&#39;) { \/\/1\u6587\u5b57\u76ee\u304c\u6570\u5b57\u3067\u306f\u306a\u304f\u30de\u30a4\u30ca\u30b9\u3067\u3082\u306a\u3044\uff1f &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;bEnd = true; \/\/\u7d42\u4e86\u30d5\u30e9\u30b0\u3092\u30aa\u30f3\u306b\u3059\u308b &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;} else { \/\/\u6570\u5b57\u307e\u305f\u306f\u30de\u30a4\u30ca\u30b9\u306a\u3089 &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;al.Add(double.Parse(strData)); \/\/\u5b9f\u6570\u306b\u5909\u63db\u3057\u3066ArrayList\u306b\u683c\u7d0d &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;} &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;if (bEnd) { \/\/\u7d42\u4e86\u30d5\u30e9\u30b0\u304c\u30aa\u30f3\uff1f &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;break; \/\/\u7e70\u8fd4\u3057\u3092\u629c\u3051\u308b &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;} &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;} &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;for (int i = 0; i &lt; al.Count; i++) { \/\/ArrayList\u306b\u683c\u7d0d\u3057\u305f\u4ef6\u6570\u306e\u5206\u3001\u7e70\u8fd4\u3059 &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Console.WriteLine(&quot;Data[{0}] = {1}&quot;, i + 1, al[i]); \/\/\u5024\u3092\u8868\u793a &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;sum += (double)al[i];&hellip; <\/p>\n<p><a class=\"moretag\" href=\"https:\/\/ha234.rundog.org\/?p=383\">Read the full article<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"templates\/full-width.php","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-383","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"_links":{"self":[{"href":"https:\/\/ha234.rundog.org\/index.php?rest_route=\/wp\/v2\/posts\/383","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/ha234.rundog.org\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/ha234.rundog.org\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/ha234.rundog.org\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/ha234.rundog.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=383"}],"version-history":[{"count":9,"href":"https:\/\/ha234.rundog.org\/index.php?rest_route=\/wp\/v2\/posts\/383\/revisions"}],"predecessor-version":[{"id":392,"href":"https:\/\/ha234.rundog.org\/index.php?rest_route=\/wp\/v2\/posts\/383\/revisions\/392"}],"wp:attachment":[{"href":"https:\/\/ha234.rundog.org\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=383"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ha234.rundog.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=383"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ha234.rundog.org\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=383"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}