{"id":27320,"date":"2024-10-27T14:10:28","date_gmt":"2024-10-27T14:10:28","guid":{"rendered":"http:\/\/atmokpo.com\/w\/?p=27320"},"modified":"2024-11-26T07:19:39","modified_gmt":"2024-11-26T07:19:39","slug":"c-%ec%bd%94%eb%94%a9%ed%85%8c%ec%8a%a4%ed%8a%b8-%ea%b0%95%ec%a2%8c-%ec%b5%9c%ec%86%8c-%ea%b3%b5%eb%b0%b0%ec%88%98-%ea%b5%ac%ed%95%98%ea%b8%b0","status":"publish","type":"post","link":"https:\/\/atmokpo.com\/w\/27320\/","title":{"rendered":"C# \ucf54\ub529\ud14c\uc2a4\ud2b8 \uac15\uc88c, \ucd5c\uc18c \uacf5\ubc30\uc218 \uad6c\ud558\uae30"},"content":{"rendered":"

<\/p>\n

\uc774\ubc88 \uac15\uc88c\uc5d0\uc11c\ub294 \ucf54\ub529 \ud14c\uc2a4\ud2b8\uc5d0\uc11c \uc790\uc8fc \ucd9c\uc81c\ub418\ub294 “\ucd5c\uc18c \uacf5\ubc30\uc218(Lowest Common Multiple, LCM)” \ubb38\uc81c\ub97c \ud574\uacb0\ud558\ub294 \ubc29\ubc95\uc5d0 \ub300\ud574 \uc54c\uc544\ubcf4\uaca0\uc2b5\ub2c8\ub2e4. \ucd5c\uc18c \uacf5\ubc30\uc218\ub294 \ub450 \uac1c \uc774\uc0c1\uc758 \uc218\ub4e4\uc5d0\uc11c \uacf5\ud1b5\uc801\uc73c\ub85c \ub098\ub204\uc5b4 \ub5a8\uc5b4\uc9c0\ub294 \uac00\uc7a5 \uc791\uc740 \uc591\uc758 \uc815\uc218\ub97c \uc758\ubbf8\ud569\ub2c8\ub2e4. \uc774 \uac1c\ub150\uc740 \uc218\ud559\uc801\uc73c\ub85c \uc911\uc694\ud55c \uc131\uc9c8\uc744 \uac00\uc9c0\uba70, \uc54c\uace0\ub9ac\uc998\uc801 \ubb38\uc81c \ud574\uacb0\uc5d0\uc11c\ub3c4 \uc790\uc8fc \uc0ac\uc6a9\ub429\ub2c8\ub2e4.<\/p>\n

\ubb38\uc81c \uc124\uba85<\/h2>\n

\uc8fc\uc5b4\uc9c4 \ub450 \uc591\uc758 \uc815\uc218 A\uc640 B\uc5d0 \ub300\ud574, A\uc640 B\uc758 \ucd5c\uc18c \uacf5\ubc30\uc218\ub97c \uad6c\ud558\ub294 \ud504\ub85c\uadf8\ub7a8\uc744 \uc791\uc131\ud558\uc2dc\uc624.<\/p>\n

\n\uc608\uc81c:<\/strong>
\nA = 12, B = 15<\/code>
\n\ucd9c\ub825:<\/strong> 60 (12\uc640 15\uc758 \ucd5c\uc18c \uacf5\ubc30\uc218)\n <\/div>\n

\ubb38\uc81c \ud574\uacb0 \uacfc\uc815<\/h2>\n

\ubb38\uc81c\ub97c \ud574\uacb0\ud558\uae30 \uc704\ud574\uc11c\ub294 \ucd5c\uc18c \uacf5\ubc30\uc218\ub97c \uad6c\ud558\ub294 \ubc29\ubc95\uc744 \uc774\ud574\ud574\uc57c \ud569\ub2c8\ub2e4. \uc77c\ubc18\uc801\uc73c\ub85c \ucd5c\uc18c \uacf5\ubc30\uc218\ub294 \ucd5c\ub300 \uacf5\uc57d\uc218(Greatest Common Divisor, GCD)\ub97c \uc774\uc6a9\ud558\uc5ec \uad6c\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4. \ub450 \uc218 A\uc640 B\uc758 \ucd5c\uc18c \uacf5\ubc30\uc218\ub294 \ub2e4\uc74c\uacfc \uac19\uc774 \ud45c\ud604\ub429\ub2c8\ub2e4:<\/p>\n

LCM(A, B) = (A * B) \/ GCD(A, B)<\/code><\/pre>\n
\uc774\ub97c \ud1b5\ud574 \ucd5c\uc18c \uacf5\ubc30\uc218\ub97c \uad6c\ud558\uae30 \uc704\ud574\uc11c\ub294 \ub450 \uc218\uc758 \uacf1\uc744 \ucd5c\ub300 \uacf5\uc57d\uc218\ub85c \ub098\ub204\uc5b4 \uc8fc\uba74 \ub429\ub2c8\ub2e4. \uc774\uc81c C#\uc73c\ub85c \uc774 \uc54c\uace0\ub9ac\uc998\uc744 \uad6c\ud604\ud574 \ubcf4\uaca0\uc2b5\ub2c8\ub2e4.<\/p>\n
\ucd5c\ub300 \uacf5\uc57d\uc218 \uad6c\ud558\uae30<\/h3>\n
\ucd5c\ub300 \uacf5\uc57d\uc218\ub294 \uc720\ud074\ub9ac\ub4dc \ud638\uc81c\ubc95\uc744 \uc0ac\uc6a9\ud558\uc5ec \uc27d\uac8c \uad6c\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4. \uc720\ud074\ub9ac\ub4dc \ud638\uc81c\ubc95\uc758 \uae30\ubcf8 \uc6d0\ub9ac\ub294 \ub2e4\uc74c\uacfc \uac19\uc2b5\ub2c8\ub2e4:<\/p>\n
GCD(A, B) = GCD(B, A % B) (B\uac00 0\uc774 \ub420 \ub54c\uae4c\uc9c0 \ubc18\ubcf5)<\/code><\/pre>\n
\uc774\uc81c \uc774\ub97c C#\uc73c\ub85c \uad6c\ud604\ud574 \ubcf4\uaca0\uc2b5\ub2c8\ub2e4.<\/p>\n
C# \ucf54\ub4dc \uad6c\ud604<\/h3>\n
\nusing System;\n\nclass Program\n{\n    \/\/ \ucd5c\ub300 \uacf5\uc57d\uc218\ub97c \uad6c\ud558\ub294 \uba54\uc11c\ub4dc\n    static int GCD(int a, int b)\n    {\n        while (b != 0)\n        {\n            int temp = b;\n            b = a % b;\n            a = temp;\n        }\n        return a;\n    }\n\n    \/\/ \ucd5c\uc18c \uacf5\ubc30\uc218\ub97c \uad6c\ud558\ub294 \uba54\uc11c\ub4dc\n    static int LCM(int a, int b)\n    {\n        return (a * b) \/ GCD(a, b);\n    }\n\n    static void Main(string[] args)\n    {\n        Console.Write(\"\uccab \ubc88\uc9f8 \uc815\uc218\ub97c \uc785\ub825\ud558\uc138\uc694: \");\n        int a = int.Parse(Console.ReadLine());\n        \n        Console.Write(\"\ub450 \ubc88\uc9f8 \uc815\uc218\ub97c \uc785\ub825\ud558\uc138\uc694: \");\n        int b = int.Parse(Console.ReadLine());\n\n        Console.WriteLine($\"\ucd5c\uc18c \uacf5\ubc30\uc218\ub294: {LCM(a, b)}\uc785\ub2c8\ub2e4.\");\n    }\n}\n    <\/code><\/pre>\n
\uc704 \ucf54\ub4dc\ub294 \uc0ac\uc6a9\uc790\uac00 \uc785\ub825\ud55c \ub450 \uc815\uc218\uc758 \ucd5c\uc18c \uacf5\ubc30\uc218\ub97c \uacc4\uc0b0\ud558\uc5ec \ucd9c\ub825\ud569\ub2c8\ub2e4. GCD<\/code> \uba54\uc11c\ub4dc\ub294 \ucd5c\ub300 \uacf5\uc57d\uc218\ub97c \uacc4\uc0b0\ud558\uace0, LCM<\/code> \uba54\uc11c\ub4dc\ub294 \ucd5c\uc18c \uacf5\ubc30\uc218\ub97c \uacc4\uc0b0\ud558\ub294 \uc5ed\ud560\uc744 \uc218\ud589\ud569\ub2c8\ub2e4.<\/p>\n
\ucf54\ub4dc \uc124\uba85<\/h2>\n
1. \ucd5c\ub300 \uacf5\uc57d\uc218 \uba54\uc11c\ub4dc<\/h3>\n
GCD(int a, int b)<\/code> \uba54\uc11c\ub4dc\ub294 \ub450 \uc815\uc218 a\uc640 b\ub97c \uc778\uc790\ub85c \ubc1b\uc544 \ucd5c\ub300 \uacf5\uc57d\uc218\ub97c \ubc18\ud658\ud569\ub2c8\ub2e4. while \ub8e8\ud504\ub97c \uc774\uc6a9\ud574 b\uac00 0\uc774 \uc544\ub2d0 \ub54c\uae4c\uc9c0 \ubc18\ubcf5\ud558\uba70, a\uc640 b\uc758 \uac12\uc744 \uc5c5\ub370\uc774\ud2b8\ud569\ub2c8\ub2e4. \uc774\ub97c \ud1b5\ud574 \uc720\ud074\ub9ac\ub4dc \ud638\uc81c\ubc95\uc744 \uad6c\ud604\ud558\uc600\uc2b5\ub2c8\ub2e4.<\/p>\n
2. \ucd5c\uc18c \uacf5\ubc30\uc218 \uba54\uc11c\ub4dc<\/h3>\n
LCM(int a, int b)<\/code> \uba54\uc11c\ub4dc\ub294 \ucd5c\uc18c \uacf5\ubc30\uc218\ub97c \uad6c\ud558\uae30 \uc704\ud574 \ub450 \uc218\uc758 \uacf1\uc744 \ucd5c\ub300 \uacf5\uc57d\uc218\ub85c \ub098\ub204\uace0 \uacb0\uacfc\ub97c \ubc18\ud658\ud569\ub2c8\ub2e4. \uc774 \uacfc\uc815\uc5d0\uc11c \uc815\uc218 \uc624\ubc84\ud50c\ub85c\uc6b0\ub97c \ubc29\uc9c0\ud558\uae30 \uc704\ud574 \uc21c\uc11c\ub97c \uc798 \uace0\ub824\ud574\uc57c \ud569\ub2c8\ub2e4.<\/p>\n
3. Main \uba54\uc11c\ub4dc<\/h3>\n
Main<\/code> \uba54\uc11c\ub4dc\uc5d0\uc11c\ub294 \uc0ac\uc6a9\uc790\ub85c\ubd80\ud130 \ub450 \uac1c\uc758 \uc815\uc218\ub97c \uc785\ub825\ubc1b\uace0, \uc774\ub97c \uc774\uc6a9\ud558\uc5ec LCM<\/code> \uba54\uc11c\ub4dc\ub97c \ud1b5\ud574 \uacb0\uacfc\ub97c \ucd9c\ub825\ud569\ub2c8\ub2e4. Console.ReadLine()<\/code>\uc744 \ud1b5\ud574 \uc785\ub825\uac12\uc744 \ubc1b\uace0, int.Parse()<\/code>\ub85c \uc815\uc218\ud615\uc73c\ub85c \ubcc0\ud658\ud569\ub2c8\ub2e4.<\/p>\n
\ud14c\uc2a4\ud2b8\uc640 \uc608\uc678 \ucc98\ub9ac<\/h2>\n
\uc774\ubc88 \uac15\uc88c\uc5d0\uc11c \uad6c\ud604\ud55c \ucd5c\uc18c \uacf5\ubc30\uc218 \ud504\ub85c\uadf8\ub7a8\uc740 \uac04\ub2e8\ud558\uc9c0\ub9cc, \uba87 \uac00\uc9c0 \uc608\uc678 \uc0c1\ud669\uc744 \uace0\ub824\ud574\uc57c \ud560 \ud544\uc694\uac00 \uc788\uc2b5\ub2c8\ub2e4. \uc608\ub97c \ub4e4\uc5b4 \uc0ac\uc6a9\uc790\uac00 0\uc774\ub098 \uc74c\uc758 \uc815\uc218\ub97c \uc785\ub825\ud558\ub294 \uacbd\uc6b0, \uc774\ub7ec\ud55c \uc785\ub825\uc744 \ucc98\ub9ac\ud560 \uc218 \uc788\ub294 \ubc29\ubc95\uc744 \uace0\ub824\ud574\uc57c \ud569\ub2c8\ub2e4. \uc774\ub97c \uc704\ud574 \ub2e4\uc74c\uacfc \uac19\uc740 \uc608\uc678 \ucc98\ub9ac\ub97c \ucd94\uac00\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4:<\/p>\n
\nstatic void Main(string[] args)\n{\n    try\n    {\n        Console.Write(\"\uccab \ubc88\uc9f8 \uc815\uc218\ub97c \uc785\ub825\ud558\uc138\uc694: \");\n        int a = int.Parse(Console.ReadLine());\n        if (a <= 0) throw new ArgumentException(\"\uc591\uc758 \uc815\uc218\ub97c \uc785\ub825\ud574\uc57c \ud569\ub2c8\ub2e4.\");\n\n        Console.Write(\"\ub450 \ubc88\uc9f8 \uc815\uc218\ub97c \uc785\ub825\ud558\uc138\uc694: \");\n        int b = int.Parse(Console.ReadLine());\n        if (b <= 0) throw new ArgumentException(\"\uc591\uc758 \uc815\uc218\ub97c \uc785\ub825\ud574\uc57c \ud569\ub2c8\ub2e4.\");\n\n        Console.WriteLine($\"\ucd5c\uc18c \uacf5\ubc30\uc218\ub294: {LCM(a, b)}\uc785\ub2c8\ub2e4.\");\n    }\n    catch (FormatException)\n    {\n        Console.WriteLine(\"\uc798\ubabb\ub41c \uc785\ub825\uc785\ub2c8\ub2e4. \uc815\uc218\ub97c \uc785\ub825\ud574 \uc8fc\uc138\uc694.\");\n    }\n    catch (ArgumentException ex)\n    {\n        Console.WriteLine(ex.Message);\n    }\n    catch (Exception ex)\n    {\n        Console.WriteLine(\"\uc54c \uc218 \uc5c6\ub294 \uc624\ub958\uac00 \ubc1c\uc0dd\ud588\uc2b5\ub2c8\ub2e4: \" + ex.Message);\n    }\n}\n    <\/code><\/pre>\n
\uc704\uc758 \ucf54\ub4dc\uc5d0\uc11c try-catch<\/code> \ube14\ub85d\uc744 \uc0ac\uc6a9\ud558\uc5ec \ub2e4\uc591\ud55c \uc608\uc678\ub97c \ucc98\ub9ac\ud558\uace0 \uc788\uc2b5\ub2c8\ub2e4. \uc0ac\uc6a9\uc790\uac00 \uc720\ud6a8\ud558\uc9c0 \uc54a\uc740 \uac12\uc744 \uc785\ub825\ud588\uc744 \uacbd\uc6b0, \uc801\uc808\ud55c \uc624\ub958 \uba54\uc2dc\uc9c0\ub97c \ucd9c\ub825\ud558\uc5ec \ud504\ub85c\uadf8\ub7a8\uc774 \ube44\uc815\uc0c1 \uc885\ub8cc\ub418\ub294 \uac83\uc744 \ubc29\uc9c0\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n
\ud6a8\uc728\uc131 \ubc0f \ucd5c\uc801\ud654<\/h2>\n
\uc774\ubc88 \ubb38\uc81c \ud574\uacb0 \uacfc\uc815\uc5d0\uc11c \uc0ac\uc6a9\ub41c \uc720\ud074\ub9ac\ub4dc \ud638\uc81c\ubc95\uc740 \ucd5c\ub300 \uacf5\uc57d\uc218\ub97c \ub9e4\uc6b0 \ud6a8\uc728\uc801\uc73c\ub85c \uacc4\uc0b0\ud560 \uc218 \uc788\ub3c4\ub85d \uc124\uacc4\ub418\uc5b4 \uc788\uc2b5\ub2c8\ub2e4. \uc774\ub7ec\ud55c \uc54c\uace0\ub9ac\uc998\uc740 O(log(min(A, B))) \uc2dc\uac04 \ubcf5\uc7a1\ub3c4\ub97c \uac16\uae30 \ub54c\ubb38\uc5d0, \ub9e4\uc6b0 \ud070 \uc218\uc758 \ucd5c\uc18c \uacf5\ubc30\uc218\ub97c \uad6c\ud560 \ub54c\uc5d0\ub3c4 \ud6a8\uc728\uc801\uc73c\ub85c \uc791\ub3d9\ud569\ub2c8\ub2e4. \uc774 \uc810\uc5d0\uc11c, \uc54c\uace0\ub9ac\uc998\uc758 \uc131\ub2a5\uc740 \ub9e4\uc6b0 \uc911\uc694\ud55c \uc694\uc18c\uc785\ub2c8\ub2e4.<\/p>\n
\ub9c8\ubb34\ub9ac<\/h2>\n
\uc774\ubc88 \uac15\uc88c\uc5d0\uc11c\ub294 C#\uc744 \uc0ac\uc6a9\ud558\uc5ec \ucd5c\uc18c \uacf5\ubc30\uc218\ub97c \uad6c\ud558\ub294 \uc54c\uace0\ub9ac\uc998\uc744 \uad6c\ud604\ud574 \ubcf4\uc558\uc2b5\ub2c8\ub2e4. \uac01 \uba54\uc11c\ub4dc\uc758 \uae30\ub2a5\uc744 \uc774\ud574\ud558\uace0, \uc608\uc678 \ucc98\ub9ac\uc640 \ud6a8\uc728\uc131\uc5d0 \ub300\ud55c \ub0b4\uc6a9\uc744 \ud568\uaed8 \ub2e4\ub8e8\uc5b4 \ubcf4\uc558\uc2b5\ub2c8\ub2e4. \ucd5c\uc18c \uacf5\ubc30\uc218\ub294 \ub2e4\uc591\ud55c \ubb38\uc81c\uc5d0\uc11c \uc751\uc6a9\ub418\ubbc0\ub85c, \uc774 \uc54c\uace0\ub9ac\uc998\uc744 \uc798 \uc219\uc9c0\ud574 \ub450\ub294 \uac83\uc774 \uc911\uc694\ud569\ub2c8\ub2e4. \uc55e\uc73c\ub85c\ub3c4 \ub2e4\uc591\ud55c \uc54c\uace0\ub9ac\uc998 \ubb38\uc81c\ub97c \ud480\uc5b4\ubcf4\uba70 \uc2e4\ub825\uc744 \uc313\uc544\uac00\uc2dc\uae38 \ubc14\ub78d\ub2c8\ub2e4!<\/p>\n
\uc5ec\uae30\uae4c\uc9c0 \uc77d\uc5b4\uc8fc\uc154\uc11c \uac10\uc0ac\ud569\ub2c8\ub2e4. \ub2e4\uc74c \uac15\uc88c\uc5d0\uc11c\ub294 \ub2e4\ub978 \uc54c\uace0\ub9ac\uc998 \ubb38\uc81c \ud574\uacb0 \ubc29\ubc95\uc5d0 \ub300\ud574 \uc54c\uc544\ubcf4\ub3c4\ub85d \ud558\uaca0\uc2b5\ub2c8\ub2e4.<\/p>\n
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\uc774\ubc88 \uac15\uc88c\uc5d0\uc11c\ub294 \ucf54\ub529 \ud14c\uc2a4\ud2b8\uc5d0\uc11c \uc790\uc8fc \ucd9c\uc81c\ub418\ub294 “\ucd5c\uc18c \uacf5\ubc30\uc218(Lowest Common Multiple, LCM)” \ubb38\uc81c\ub97c \ud574\uacb0\ud558\ub294 \ubc29\ubc95\uc5d0 \ub300\ud574 \uc54c\uc544\ubcf4\uaca0\uc2b5\ub2c8\ub2e4. \ucd5c\uc18c \uacf5\ubc30\uc218\ub294 \ub450 \uac1c \uc774\uc0c1\uc758 \uc218\ub4e4\uc5d0\uc11c \uacf5\ud1b5\uc801\uc73c\ub85c \ub098\ub204\uc5b4 \ub5a8\uc5b4\uc9c0\ub294 \uac00\uc7a5 \uc791\uc740 \uc591\uc758 \uc815\uc218\ub97c \uc758\ubbf8\ud569\ub2c8\ub2e4. \uc774 \uac1c\ub150\uc740 \uc218\ud559\uc801\uc73c\ub85c \uc911\uc694\ud55c \uc131\uc9c8\uc744 \uac00\uc9c0\uba70, \uc54c\uace0\ub9ac\uc998\uc801 \ubb38\uc81c \ud574\uacb0\uc5d0\uc11c\ub3c4 \uc790\uc8fc \uc0ac\uc6a9\ub429\ub2c8\ub2e4. \ubb38\uc81c \uc124\uba85 \uc8fc\uc5b4\uc9c4 \ub450 \uc591\uc758 \uc815\uc218 A\uc640 B\uc5d0 \ub300\ud574, A\uc640 B\uc758 \ucd5c\uc18c \uacf5\ubc30\uc218\ub97c \uad6c\ud558\ub294 … \ub354 \ubcf4\uae30 “C# \ucf54\ub529\ud14c\uc2a4\ud2b8 \uac15\uc88c, \ucd5c\uc18c \uacf5\ubc30\uc218 \uad6c\ud558\uae30”<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[24],"tags":[],"class_list":["post-27320","post","type-post","status-publish","format-standard","hentry","category-c--"],"yoast_head":"\nC# \ucf54\ub529\ud14c\uc2a4\ud2b8 \uac15\uc88c, \ucd5c\uc18c \uacf5\ubc30\uc218 \uad6c\ud558\uae30 - 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