{"id":27923,"date":"2024-10-27T15:20:22","date_gmt":"2024-10-27T15:20:22","guid":{"rendered":"http:\/\/atmokpo.com\/w\/?p=27923"},"modified":"2024-11-26T07:13:39","modified_gmt":"2024-11-26T07:13:39","slug":"%ec%9e%90%eb%b0%94%ec%8a%a4%ed%81%ac%eb%a6%bd%ed%8a%b8-%ec%bd%94%eb%94%a9%ed%85%8c%ec%8a%a4%ed%8a%b8-%ea%b0%95%ec%a2%8c-%ec%98%a4%ec%9d%bc%eb%9f%ac-%ed%94%bc","status":"publish","type":"post","link":"https:\/\/atmokpo.com\/w\/27923\/","title":{"rendered":"\uc790\ubc14\uc2a4\ud06c\ub9bd\ud2b8 \ucf54\ub529\ud14c\uc2a4\ud2b8 \uac15\uc88c, \uc624\uc77c\ub7ec \ud53c"},"content":{"rendered":"<p><body><\/p>\n<h2>\ubb38\uc81c \uc124\uba85<\/h2>\n<p>\n        \uc624\uc77c\ub7ec \ud53c(Euler\u2019s totient function), \ub610\ub294 \u03c6(n)\uc740 1\uacfc n \uc0ac\uc774\uc758 \uc815\uc218 \uc911 n\uacfc \uc11c\ub85c\uc18c\uc778 \uc815\uc218\uc758 \uac1c\uc218\ub97c \ubc18\ud658\ud558\ub294 \ud568\uc218\uc785\ub2c8\ub2e4. \uc608\ub97c \ub4e4\uc5b4, \u03c6(9) = 6\uc774\uba70 \uadf8 \uc774\uc720\ub294 1, 2, 4, 5, 7, 8\uc774 9\uc640 \uc11c\ub85c\uc18c\uc774\uae30 \ub54c\ubb38\uc785\ub2c8\ub2e4.\n    <\/p>\n<p>\n        \uc774\ubc88 \ubb38\uc81c\ub294 \uc8fc\uc5b4\uc9c0\ub294 \uc815\uc218 N\uc5d0 \ub300\ud574 \u03c6(N)\uc744 \uacc4\uc0b0\ud558\ub294 \ud568\uc218, <strong>calculateTotient<\/strong>\ub97c \uc791\uc131\ud558\ub294 \uac83\uc785\ub2c8\ub2e4. \uc774 \ud568\uc218\ub294 n\uc774 1\ubcf4\ub2e4 \ud06c\uac70\ub098 \uac19\uace0, 10^6 \uc774\ud558\uc77c \ub54c \uc815\ud655\ud55c \u03c6(n)\uc758 \uac12\uc744 \ucd9c\ub825\ud574\uc57c \ud569\ub2c8\ub2e4.\n    <\/p>\n<h2>\ubb38\uc81c \uc811\uadfc \ubc29\ubc95<\/h2>\n<p>\n        \uc624\uc77c\ub7ec \ud53c\ub97c \uacc4\uc0b0\ud558\ub294 \ubc29\ubc95\uc5d0\ub294 \uc5ec\ub7ec \uac00\uc9c0\uac00 \uc788\uc9c0\ub9cc, \uc81c\uc77c \ud6a8\uc728\uc801\uc778 \ubc29\ubc95 \uc911 \ud558\ub098\ub294 n\uc758 \uc18c\uc778\uc218 \ubd84\ud574\ub97c \uc0ac\uc6a9\ud558\ub294 \uac83\uc785\ub2c8\ub2e4. \uc624\uc77c\ub7ec \ud53c \ud568\uc218\ub294 \ub2e4\uc74c\uacfc \uac19\uc774 \uc815\uc758\ub420 \uc218 \uc788\uc2b5\ub2c8\ub2e4:\n    <\/p>\n<ul>\n<li>\u03c6(p^k) = p^k &#8211; p^(k-1) (p\ub294 \uc18c\uc218, k\ub294 \uc790\uc5f0\uc218)<\/li>\n<li>\u03c6(n) = n \u00d7 (1 &#8211; 1\/p1) \u00d7 (1 &#8211; 1\/p2) \u00d7 &#8230; \u00d7 (1 &#8211; 1\/pk) (n\uc758 \uc18c\uc778\uc218 p1, p2, &#8230;, pk)<\/li>\n<\/ul>\n<h2>\uc54c\uace0\ub9ac\uc998 \ub2e8\uacc4<\/h2>\n<ol>\n<li>\uc785\ub825 \uac12 N\uc744 \uac00\uc838\uc628\ub2e4.<\/li>\n<li>N\uc758 \uc18c\uc778\uc218\ub97c \ucc3e\ub294\ub2e4.<\/li>\n<li>\uac01 \uc18c\uc778\uc218\uc5d0 \ub300\ud574 \u03c6(n) \uacf5\uc2dd\uc744 \uc801\uc6a9\ud558\uc5ec \uacb0\uacfc\ub97c \uacc4\uc0b0\ud55c\ub2e4.<\/li>\n<li>\uacb0\uacfc\ub97c \ubc18\ud658\ud55c\ub2e4.<\/li>\n<\/ol>\n<h2>\uc2e4\uc81c \ucf54\ub4dc \uad6c\ud604<\/h2>\n<p>\n        \ub2e4\uc74c\uc740 \uc790\ubc14\uc2a4\ud06c\ub9bd\ud2b8\ub85c \uc791\uc131\ub41c <strong>calculateTotient<\/strong> \ud568\uc218\uc758 \uad6c\ud604\uc785\ub2c8\ub2e4. \uc774 \ud568\uc218\ub294 \uc785\ub825\ubc1b\uc740 n\uc5d0 \ub300\ud574\uc11c \uc624\uc77c\ub7ec \ud53c \uac12\uc744 \ubc18\ud658\ud569\ub2c8\ub2e4.\n    <\/p>\n<pre>\n        <code>\nfunction gcd(a, b) {\n    return b === 0 ? a : gcd(b, a % b);\n}\n\nfunction calculateTotient(n) {\n    let result = n; \/\/ \ucd08\uae30 \uac12\uc740 n\n    for (let p = 2; p * p &lt;= n; p++) {\n        if (n % p === 0) { \/\/ p\uac00 n\uc758 \uc18c\uc778\uc218\uc77c \uacbd\uc6b0\n            while (n % p === 0) {\n                n \/= p;\n            }\n            result *= (p - 1);\n            result \/= p; \/\/ \uc624\uc77c\ub7ec \ud53c \uacf5\uc2dd \uc801\uc6a9\n        }\n    }\n    if (n &gt; 1) { \/\/ n\uc774 \uc18c\uc218\uc778 \uacbd\uc6b0\n        result *= (n - 1);\n        result \/= n;\n    }\n    return result;\n}\n\nconsole.log(calculateTotient(9)); \/\/ \ucd9c\ub825: 6\n<\/code>\n        <\/pre>\n<h2>\ucf54\ub4dc \uc124\uba85<\/h2>\n<p>\n        &#8211; <strong>gcd<\/strong> \ud568\uc218\ub294 \ub450 \uc22b\uc790\uc758 \ucd5c\ub300\uacf5\uc57d\uc218\ub97c \uacc4\uc0b0\ud569\ub2c8\ub2e4. \uc774 \ud568\uc218\ub294 \uae30\ubcf8\uc801\uc778 \uc54c\uace0\ub9ac\uc998\uc73c\ub85c, \uc18c\uc778\uc218 \ubd84\ud574\ub97c \uc704\ud574 \uc0ac\uc6a9\ub429\ub2c8\ub2e4.\n    <\/p>\n<p>\n        &#8211; <strong>calculateTotient<\/strong> \ud568\uc218\uc5d0\uc11c\ub294 \ubcc0\uc218 <strong>result<\/strong>\ub97c n\uc73c\ub85c \ucd08\uae30\ud654\ud558\uc5ec \uc774\ud6c4 \uc18c\uc778\uc218\uc5d0 \ub300\ud55c \ubcc0\ud654\ub97c \ubc18\uc601\ud569\ub2c8\ub2e4.\n    <\/p>\n<p>\n        &#8211; for \ub8e8\ud504\ub97c \ud1b5\ud574 2\ubd80\ud130 n\uc758 \uc81c\uacf1\uadfc\uae4c\uc9c0\uc758 \ubaa8\ub4e0 \uc218 p\ub97c \uac80\uc0ac\ud558\uc5ec n\uc774 p\uc758 \ubc30\uc218\uc778 \uacbd\uc6b0 \uc18c\uc778\uc218\ub85c \uc778\uc2dd\ud569\ub2c8\ub2e4.\n    <\/p>\n<p>\n        &#8211; \ub9c8\uc9c0\ub9c9\uc73c\ub85c n\uc774 1\ubcf4\ub2e4 \ud070 \uacbd\uc6b0, \uc989 n\uc774 \uc18c\uc218\uc778 \uacbd\uc6b0\uc5d0 \ub300\ud574 \ucd94\uac00 \uc5f0\uc0b0\uc744 \uc218\ud589\ud558\uc5ec \uacb0\uacfc\ub97c \uc5bb\uc2b5\ub2c8\ub2e4.\n    <\/p>\n<h2>\uacb0\ub860<\/h2>\n<p>\n        \uc774\ubc88 \uac15\uc88c\uc5d0\uc11c\ub294 \uc624\uc77c\ub7ec \ud53c\ub97c \uacc4\uc0b0\ud558\ub294 \ubc29\ubc95\uc5d0 \ub300\ud574 \uc54c\uc544\ubcf4\uc558\uc2b5\ub2c8\ub2e4. \uc54c\uace0\ub9ac\uc998 \ubb38\uc81c\ub97c \ud574\uacb0\ud558\uae30 \uc704\ud574 \uc18c\uc778\uc218 \ubd84\ud574\ub77c\ub294 \uc218\ud559\uc801 \uac1c\ub150\uc744 \uc774\uc6a9\ud558\ub294 \uac83\uc774 \uc5bc\ub9c8\ub098 \uc911\uc694\ud55c\uc9c0 \uc774\ud574\ud558\uc168\uae38 \ubc14\ub78d\ub2c8\ub2e4. \uc774\uc640 \uac19\uc740 \ud1a0\ud53d\uc744 \ud65c\uc6a9\ud558\uc5ec \uc790\ubc14\uc2a4\ud06c\ub9bd\ud2b8 \ucf54\ub529 \ud14c\uc2a4\ud2b8\ub97c \uc900\ube44\ud574\ubcf4\uc138\uc694.\n    <\/p>\n<h2>\ucd94\uac00 \ud559\uc2b5 \uc790\ub8cc<\/h2>\n<p>\n        &#8211; <a href=\"https:\/\/en.wikipedia.org\/wiki\/Euler%27s_totient_function\">\uc624\uc77c\ub7ec \ud53c \ud568\uc218<\/a><br \/>\n        &#8211; <a href=\"https:\/\/www.geeksforgeeks.org\/eulers-totient-function-phi-n\/\">GeeksforGeeks\uc758 Euler&#8217;s Totient Function \uc124\uba85<\/a>\n<\/p>\n<p><\/body><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\ubb38\uc81c \uc124\uba85 \uc624\uc77c\ub7ec \ud53c(Euler\u2019s totient function), \ub610\ub294 \u03c6(n)\uc740 1\uacfc n \uc0ac\uc774\uc758 \uc815\uc218 \uc911 n\uacfc \uc11c\ub85c\uc18c\uc778 \uc815\uc218\uc758 \uac1c\uc218\ub97c \ubc18\ud658\ud558\ub294 \ud568\uc218\uc785\ub2c8\ub2e4. \uc608\ub97c \ub4e4\uc5b4, \u03c6(9) = 6\uc774\uba70 \uadf8 \uc774\uc720\ub294 1, 2, 4, 5, 7, 8\uc774 9\uc640 \uc11c\ub85c\uc18c\uc774\uae30 \ub54c\ubb38\uc785\ub2c8\ub2e4. \uc774\ubc88 \ubb38\uc81c\ub294 \uc8fc\uc5b4\uc9c0\ub294 \uc815\uc218 N\uc5d0 \ub300\ud574 \u03c6(N)\uc744 \uacc4\uc0b0\ud558\ub294 \ud568\uc218, calculateTotient\ub97c \uc791\uc131\ud558\ub294 \uac83\uc785\ub2c8\ub2e4. \uc774 \ud568\uc218\ub294 n\uc774 1\ubcf4\ub2e4 \ud06c\uac70\ub098 \uac19\uace0, 10^6 \uc774\ud558\uc77c &hellip; <a href=\"https:\/\/atmokpo.com\/w\/27923\/\" class=\"more-link\">\ub354 \ubcf4\uae30<span class=\"screen-reader-text\"> &#8220;\uc790\ubc14\uc2a4\ud06c\ub9bd\ud2b8 \ucf54\ub529\ud14c\uc2a4\ud2b8 \uac15\uc88c, \uc624\uc77c\ub7ec \ud53c&#8221;<\/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":[26],"tags":[],"class_list":["post-27923","post","type-post","status-publish","format-standard","hentry","category-26"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.2 - 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