{"id":28612,"date":"2024-10-27T16:12:32","date_gmt":"2024-10-27T16:12:32","guid":{"rendered":"http:\/\/atmokpo.com\/w\/?p=28612"},"modified":"2024-11-26T07:00:21","modified_gmt":"2024-11-26T07:00:21","slug":"%ec%bd%94%ed%8b%80%eb%a6%b0-%ec%bd%94%eb%94%a9%ed%85%8c%ec%8a%a4%ed%8a%b8-%ea%b0%95%ec%a2%8c-%ed%8a%b8%eb%9d%bc%ec%9d%b4","status":"publish","type":"post","link":"https:\/\/atmokpo.com\/w\/28612\/","title":{"rendered":"\ucf54\ud2c0\ub9b0 \ucf54\ub529\ud14c\uc2a4\ud2b8 \uac15\uc88c, \ud2b8\ub77c\uc774"},"content":{"rendered":"

<\/p>\n

\n

\n \ucf54\ub529\ud14c\uc2a4\ud2b8\uc5d0\uc11c \uc790\uc8fc \ub4f1\uc7a5\ud558\ub294 \ub370\uc774\ud130 \uad6c\uc870 \uc911 \ud558\ub098\uc778 \ud2b8\ub77c\uc774\ub294 \ubb38\uc790\uc5f4\uc744 \ud6a8\uc728\uc801\uc73c\ub85c \uc800\uc7a5\ud558\uace0 \uac80\uc0c9\ud558\ub294 \ub370
\n \ub9e4\uc6b0 \uc720\uc6a9\ud569\ub2c8\ub2e4. \uc774\ubc88 \uac15\uc88c\uc5d0\uc11c\ub294 \ud2b8\ub77c\uc774\uc758 \uae30\ubcf8 \uac1c\ub150\uc744 \uc774\ud574\ud558\uace0, \ucf54\ud2c0\ub9b0\uc744 \uc774\uc6a9\ud558\uc5ec \ud2b8\ub77c\uc774\ub97c \uad6c\ud604\ud558\uace0
\n \ud2b9\uc815 \ubb38\uc81c\ub97c \ud574\uacb0\ud558\ub294 \uacfc\uc815\uc744 \uc790\uc138\ud788 \uc0b4\ud3b4\ubcf4\uaca0\uc2b5\ub2c8\ub2e4.\n <\/p>\n

\n

1. \ud2b8\ub77c\uc774(Trie)\ub780?<\/h2>\n

\n \ud2b8\ub77c\uc774\ub294 \ub2e4\uc911 \uc811\ub450\uc0ac \ubb38\uc790\uc5f4 \uac80\uc0c9\uc744 \uc704\ud574 \uc0ac\uc6a9\ud558\ub294 \ud2b8\ub9ac \uc790\ub8cc \uad6c\uc870\uc785\ub2c8\ub2e4.
\n \uac01 \ub178\ub4dc\ub294 \ubb38\uc790\uc5f4\uc758 \uac01 \ubb38\uc790\uc5d0 \ub300\ud55c \uacbd\ub85c\ub97c \ub098\ud0c0\ub0b4\uace0, \ub8e8\ud2b8\ubd80\ud130 \ub9ac\ud504\uae4c\uc9c0\uc758 \uacbd\ub85c\ub294 \ud558\ub098\uc758 \ubb38\uc790\uc5f4\uc744
\n \ud615\uc131\ud569\ub2c8\ub2e4. \ub530\ub77c\uc11c, \ud2b8\ub77c\uc774\ub97c \uc0ac\uc6a9\ud558\uba74 \ubb38\uc790\uc5f4\uc758 \uacf5\ud1b5 \ubd80\ubd84\uc744 \uacf5\uc720\ud560 \uc218 \uc788\uc5b4 \uba54\ubaa8\ub9ac \ud6a8\uc728\uc131\uc774 \ub6f0\uc5b4\ub0a9\ub2c8\ub2e4.\n <\/p>\n

\n \uc608\ub97c \ub4e4\uc5b4, “cat”, “cab”, “dog”\uc640 \uac19\uc740 \ub2e8\uc5b4\ub4e4\uc774 \uc788\uc744 \ub54c, \uc774 \ub2e8\uc5b4\ub4e4\uc740 \ud2b8\ub77c\uc774\ub97c \ud1b5\ud574
\n \ub2e4\uc74c\uacfc \uac19\uc774 \uc800\uc7a5\ub420 \uc218 \uc788\uc2b5\ub2c8\ub2e4:\n <\/p>\n

\n                (root)\n                \u251c\u2500\u2500 c\n                \u2502   \u251c\u2500\u2500 a\n                \u2502   \u2502   \u251c\u2500\u2500 b\n                \u2502   \u2502   \u2514\u2500\u2500 t\n                \u2502   \u2514\u2500\u2500 d\n                \u2514\u2500\u2500 d\n                    \u2514\u2500\u2500 o\n                        \u2514\u2500\u2500 g\n            <\/pre>\n
\n                \uc774\ucc98\ub7fc \ud2b8\ub77c\uc774\ub294 \ubb38\uc790\uc5f4 \uc9d1\ud569\uc758 \ud6a8\uc728\uc801\uc778 \uc800\uc7a5 \ubc0f \uac80\uc0c9\uc744 \uc704\ud55c \uac15\ub825\ud55c \ub3c4\uad6c\uc785\ub2c8\ub2e4.
\n                \ud2b9\ud788, \uc811\ub450\uc0ac \uac80\uc0c9, \ub2e8\uc5b4 \uc644\uc131 \uae30\ub2a5, \uc0ac\uc804 \uc21c \uc815\ub82c \ubb38\uc81c\uc5d0 \ud6a8\uacfc\uc801\uc785\ub2c8\ub2e4.\n            <\/p>\n<\/section>\n
\n
2. \ud2b8\ub77c\uc774 \uc790\ub8cc\uad6c\uc870\uc758 \uad6c\ud604<\/h2>\n
\n                \ud2b8\ub77c\uc774\ub97c \uad6c\ud604\ud558\uae30 \uc704\ud574 \ub450 \uac1c\uc758 \uc8fc\uc694 \ud074\ub798\uc2a4\ub97c \uc815\uc758\ud560 \uac83\uc785\ub2c8\ub2e4:
\n                TrieNode<\/code>\uc640 Trie<\/code> \ud074\ub798\uc2a4\uc785\ub2c8\ub2e4.\n            <\/p>\n
\n                class TrieNode {\n                    val children: MutableMap = mutableMapOf()\n                    var isEndOfWord: Boolean = false\n                }\n                \n                class Trie {\n                    private val root: TrieNode = TrieNode()\n                    \n                    fun insert(word: String) {\n                        var node = root\n                        for (char in word) {\n                            node = node.children.getOrPut(char) { TrieNode() }\n                        }\n                        node.isEndOfWord = true\n                    }\n                    \n                    fun search(word: String): Boolean {\n                        var node = root\n                        for (char in word) {\n                            node = node.children[char] ?: return false\n                        }\n                        return node.isEndOfWord\n                    }\n                }\n            <\/char,><\/pre>\n
\n                \uc704 \ucf54\ub4dc\ub294 \ud2b8\ub77c\uc774\uc758 \uae30\ubcf8\uc801\uc778 \uc0bd\uc785 \ubc0f \uac80\uc0c9 \uae30\ub2a5\uc744 \uc81c\uacf5\ud569\ub2c8\ub2e4. TrieNode<\/code>
\n                \ud074\ub798\uc2a4\ub294 \uc790\uc2dd \ub178\ub4dc\ub97c \uc800\uc7a5\ud558\uace0, \ub2e8\uc5b4\uc758 \ub05d\uc744 \ub098\ud0c0\ub0b4\ub294 \ud50c\ub798\uadf8\ub97c \ub2f4\uace0 \uc788\uc2b5\ub2c8\ub2e4.
\n                Trie<\/code> \ud074\ub798\uc2a4\ub294 \uc0bd\uc785\uacfc \uac80\uc0c9 \uae30\ub2a5\uc744 \uc81c\uacf5\ud558\uba70, getOrPut<\/code> \ud568\uc218\ub97c \uc0ac\uc6a9\ud558\uc5ec
\n                \uc790\uc2dd \ub178\ub4dc\ub97c \ub3d9\uc801\uc73c\ub85c \uc0dd\uc131\ud569\ub2c8\ub2e4.\n            <\/p>\n<\/section>\n
\n
3. \ubb38\uc81c \uc124\uba85: \ub2e8\uc5b4 \uac80\uc0c9<\/h2>\n
\n\ubb38\uc81c:<\/strong> \uc8fc\uc5b4\uc9c4 \ub2e8\uc5b4 \ub9ac\uc2a4\ud2b8\uc640 \ucffc\ub9ac \ub9ac\uc2a4\ud2b8\uac00 \uc788\uc744 \ub54c, \uac01 \ucffc\ub9ac\uac00 \ub2e8\uc5b4 \ub9ac\uc2a4\ud2b8\uc5d0 \ud3ec\ud568\ub418\ub294\uc9c0
\n                \ud655\uc778\ud558\ub294 \ud504\ub85c\uadf8\ub7a8\uc744 \uc791\uc131\ud558\uc2dc\uc624. \ud2b9\ud788, \uacf5\ud1b5\ub41c \uc811\ub450\uc0ac\ub97c \uac00\uc9c0\ub294 \ub2e8\uc5b4\ub4e4\uc744 \ud6a8\uc728\uc801\uc73c\ub85c \uac80\uc0c9\ud560 \uc218 \uc788\ub3c4\ub85d \ud569\ub2c8\ub2e4.\n            <\/p>\n
\n\uc785\ub825:<\/strong>
\n                – \ub2e8\uc5b4 \ub9ac\uc2a4\ud2b8: [“apple”, “app”, “bat”, “ball”, “batman”]
\n                – \ucffc\ub9ac \ub9ac\uc2a4\ud2b8: [“app”, “bat”, “banana”, “appl”, “ball”]\n            <\/p>\n
\n\ucd9c\ub825:<\/strong> \uac01 \ucffc\ub9ac\uac00 \ub2e8\uc5b4 \ub9ac\uc2a4\ud2b8\uc5d0 \uc788\ub294\uc9c0 \uc5ec\ubd80\ub97c
\n                Boolean \uac12\uc73c\ub85c \ub098\ud0c0\ub0b4\ub294 \ub9ac\uc2a4\ud2b8\ub97c \ubc18\ud658\ud569\ub2c8\ub2e4.
\n                \uc608\ub97c \ub4e4\uc5b4, [true, true, false, false, true]\uac00 \ucd9c\ub825\ub418\uc5b4\uc57c \ud569\ub2c8\ub2e4.\n            <\/p>\n<\/section>\n
\n
4. \ubb38\uc81c \ud574\uacb0 \uacfc\uc815<\/h2>\n
\n                \uc704 \ubb38\uc81c\ub97c \ud574\uacb0\ud558\uae30 \uc704\ud574 \uba3c\uc800 \ub2e8\uc5b4 \ub9ac\uc2a4\ud2b8\ub97c \ud2b8\ub77c\uc774\uc5d0 \uc0bd\uc785\ud558\uace0,
\n                \uc774\ud6c4 \uac01 \ucffc\ub9ac\ub97c \uac80\uc0c9\ud558\uc5ec \uacb0\uacfc\ub97c \ud655\uc778\ud558\ub294 \ubc29\uc2dd\uc744 \uc0ac\uc6a9\ud560 \uac83\uc785\ub2c8\ub2e4.\n            <\/p>\n
\n                fun wordSearch(words: List, queries: List): List {\n                    val trie = Trie()\n                    for (word in words) {\n                        trie.insert(word)\n                    }\n                    return queries.map { trie.search(it) }\n                }\n            <\/boolean><\/string><\/string><\/pre>\n
\nwordSearch<\/code> \ud568\uc218\ub294 \uba3c\uc800 Trie<\/code> \uac1d\uccb4\ub97c \uc0dd\uc131\ud558\uace0,
\n                \uc8fc\uc5b4\uc9c4 \ub2e8\uc5b4 \ub9ac\uc2a4\ud2b8\ub97c \ud1b5\ud574 \ud2b8\ub9ac\uc5d0 \ub2e8\uc5b4\ub4e4\uc744 \uc0bd\uc785\ud569\ub2c8\ub2e4.
\n                \uc774\uc5b4\uc11c \ucffc\ub9ac \ub9ac\uc2a4\ud2b8\ub97c \uc21c\ud68c\ud558\uba70 search<\/code> \uba54\uc11c\ub4dc\ub97c \ud638\ucd9c\ud558\uc5ec
\n                \uac01 \ucffc\ub9ac\uac00 \uc874\uc7ac\ud558\ub294\uc9c0 \uc5ec\ubd80\ub97c \ud655\uc778\ud569\ub2c8\ub2e4.\n            <\/p>\n<\/section>\n
\n
5. \ucf54\ub4dc \uc2e4\ud589 \uc608\uc81c<\/h2>\n
\n                fun main() {\n                    val words = listOf(\"apple\", \"app\", \"bat\", \"ball\", \"batman\")\n                    val queries = listOf(\"app\", \"bat\", \"banana\", \"appl\", \"ball\")\n                    val result = wordSearch(words, queries)\n                    println(result) \/\/ [true, true, false, false, true]\n                }\n            <\/pre>\n
\n                \uc704\uc758 \ucf54\ub4dc \ube14\ub85d\uc744 \uc2e4\ud589\ud558\uba74 \ucffc\ub9ac\uc5d0 \ub300\ud55c \ub2f5\uc744
\n                Boolean \uac12\uc73c\ub85c \ud3ec\ud568\ud55c \ub9ac\uc2a4\ud2b8\uac00 \ucd9c\ub825\ub429\ub2c8\ub2e4. \uc774\ucc98\ub7fc \ud2b8\ub77c\uc774\ub294
\n                \ubb38\uc790\uc5f4 \uac80\uc0c9 \ubb38\uc81c\ub97c \uac04\ub2e8\ud558\uace0 \ud6a8\uc728\uc801\uc73c\ub85c \ud574\uacb0\ud574\uc90d\ub2c8\ub2e4.\n            <\/p>\n<\/section>\n
\n
6. \ud2b8\ub77c\uc774\uc758 \uc720\uc6a9\uc131\uacfc \ud655\uc7a5<\/h2>\n
\n                \ud2b8\ub77c\uc774\ub294 \ubb38\uc790\uc5f4 \uac80\uc0c9 \uc678\uc5d0\ub3c4 \uc5ec\ub7ec \uac00\uc9c0 \ub2e4\ub978 \ubb38\uc81c\uc5d0 \uc751\uc6a9\ub420 \uc218 \uc788\uc2b5\ub2c8\ub2e4.
\n                \uc608\ub97c \ub4e4\uc5b4, \uc790\ub3d9 \uc644\uc131 \uae30\ub2a5, \uc811\ub450\uc0ac \uac80\uc0c9 \uae30\ub2a5\uc740 \ud2b8\ub77c\uc774\uc758
\n                \uac00\uc7a5 \uc77c\ubc18\uc801\uc778 \ud65c\uc6a9 \uc0ac\ub840\uc785\ub2c8\ub2e4. \ub610\ud55c, \ud2b8\ub77c\uc774\ub97c \ud1b5\ud574 \ubb38\uc81c\ub97c
\n                \ud655\uc7a5\ud558\uc5ec \ucd94\uac00 \uae30\ub2a5\uc744 \ub123\uc744 \uc218\ub3c4 \uc788\uc2b5\ub2c8\ub2e4. \ud2b9\uc815 \uc811\ub450\uc0ac\ub85c \uc2dc\uc791\ud558\ub294
\n                \ubaa8\ub4e0 \ub2e8\uc5b4\ub97c \ucc3e\ub294 \uae30\ub2a5\uc774\ub098 \ud2b9\uc815 \ud328\ud134\uc73c\ub85c \uc2dc\uc791\ud558\ub294 \ub2e8\uc5b4\ub97c \ucc3e\ub294
\n                \uae30\ub2a5\uc744 \uad6c\ud604\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.\n            <\/p>\n
\n                \uc608\ub97c \ub4e4\uc5b4, \ud2b9\uc815 \uc811\ub450\uc0ac\ub85c \uc2dc\uc791\ud558\ub294 \ubaa8\ub4e0 \ub2e8\uc5b4\ub97c \ucc3e\ub294
\n                startsWith<\/code> \uba54\uc11c\ub4dc\ub97c \ub2e4\uc74c\uacfc \uac19\uc774 \ucd94\uac00\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.\n            <\/p>\n
\n                fun startsWith(prefix: String): Boolean {\n                    var node = root\n                    for (char in prefix) {\n                        node = node.children[char] ?: return false\n                    }\n                    return true\n                }\n            <\/pre>\n
\n                \uc774 \uba54\uc11c\ub4dc\ub294 \uc8fc\uc5b4\uc9c4 \uc811\ub450\uc0ac\uac00 \ud2b8\ub9ac\uc5d0 \uc874\uc7ac\ud558\ub294\uc9c0 \uc5ec\ubd80\ub97c
\n                \ud655\uc778\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4. \uc774\ub7ec\ud55c \ud655\uc7a5 \uae30\ub2a5\uc740 \ud2b9\ud788 \ub300\uc6a9\ub7c9 \ub370\uc774\ud130
\n                \ucc98\ub9ac \uc2dc \ub9e4\uc6b0 \uc720\uc6a9\ud569\ub2c8\ub2e4.\n            <\/p>\n<\/section>\n
\n
7. \uacb0\ub860<\/h2>\n
\n                \uc9c0\uae08\uae4c\uc9c0 \ucf54\ud2c0\ub9b0\uc744 \uc0ac\uc6a9\ud558\uc5ec \ud2b8\ub77c\uc774\ub97c \uad6c\ud604\ud558\uace0, \ubb38\uc790\uc5f4 \uac80\uc0c9
\n                \ubb38\uc81c\ub97c \ud574\uacb0\ud558\ub294 \uacfc\uc815\uc744 \uc0b4\ud3b4\ubcf4\uc558\uc2b5\ub2c8\ub2e4. \ud2b8\ub77c\uc774\ub294 \ubb38\uc790\uc5f4\uc744
\n                \ud6a8\uc728\uc801\uc73c\ub85c \uad00\ub9ac\ud558\uace0 \uac80\uc0c9\ud558\ub294 \ub370 \ub9e4\uc6b0 \uc720\uc6a9\ud55c \uc790\ub8cc\uad6c\uc870\ub85c,
\n                \ucf54\ub529\ud14c\uc2a4\ud2b8\uc5d0\uc11c\uc758 \ubb38\uc81c\uac00 \ub9ce\uc2b5\ub2c8\ub2e4. \ubb38\uc81c\ub97c \ud574\uacb0\ud558\uae30 \uc704\ud55c
\n                \ub2e4\uc591\ud55c \uc811\uadfc \ubc29\uc2dd\uc744 \uc2dc\ub3c4\ud558\uace0, \ud2b8\ub77c\uc774\ub97c \uc801\uc808\ud788 \ud65c\uc6a9\ud55c\ub2e4\uba74
\n                \ub2e4\uc591\ud55c \uc54c\uace0\ub9ac\uc998 \ubb38\uc81c\ub97c \uc27d\uac8c \ud574\uacb0\ud560 \uc218 \uc788\uc744 \uac83\uc785\ub2c8\ub2e4.\n            <\/p>\n
\n                \ub2e4\uc74c \uac15\uc88c\uc5d0\uc11c\ub294 \ud2b8\ub77c\uc774\uc758 \ubcc0\ud615 \ubc0f \ub2e4\ub978 \uace0\uae09 \ubb38\uc790\uc5f4 \uc54c\uace0\ub9ac\uc998\uc5d0 \ub300\ud574
\n                \ub2e4\ub8f0 \uc608\uc815\uc785\ub2c8\ub2e4. \ub354 \ub9ce\uc740 \uc5f0\uc2b5 \ubb38\uc81c\uc640 \uc2e4\uc81c \ucf54\ub529\ud14c\uc2a4\ud2b8 \ubb38\uc81c\ub97c \ud1b5\ud574
\n                \uc2e4\ub825\uc744 \uc313\uc544\uac00\uc2dc\uae30 \ubc14\ub78d\ub2c8\ub2e4. \uac10\uc0ac\ud569\ub2c8\ub2e4!\n            <\/p>\n<\/section>\n<\/article>\n
<\/body><\/p>\n","protected":false},"excerpt":{"rendered":"
\ucf54\ub529\ud14c\uc2a4\ud2b8\uc5d0\uc11c \uc790\uc8fc \ub4f1\uc7a5\ud558\ub294 \ub370\uc774\ud130 \uad6c\uc870 \uc911 \ud558\ub098\uc778 \ud2b8\ub77c\uc774\ub294 \ubb38\uc790\uc5f4\uc744 \ud6a8\uc728\uc801\uc73c\ub85c \uc800\uc7a5\ud558\uace0 \uac80\uc0c9\ud558\ub294 \ub370 \ub9e4\uc6b0 \uc720\uc6a9\ud569\ub2c8\ub2e4. \uc774\ubc88 \uac15\uc88c\uc5d0\uc11c\ub294 \ud2b8\ub77c\uc774\uc758 \uae30\ubcf8 \uac1c\ub150\uc744 \uc774\ud574\ud558\uace0, \ucf54\ud2c0\ub9b0\uc744 \uc774\uc6a9\ud558\uc5ec \ud2b8\ub77c\uc774\ub97c \uad6c\ud604\ud558\uace0 \ud2b9\uc815 \ubb38\uc81c\ub97c \ud574\uacb0\ud558\ub294 \uacfc\uc815\uc744 \uc790\uc138\ud788 \uc0b4\ud3b4\ubcf4\uaca0\uc2b5\ub2c8\ub2e4. 1. \ud2b8\ub77c\uc774(Trie)\ub780? \ud2b8\ub77c\uc774\ub294 \ub2e4\uc911 \uc811\ub450\uc0ac \ubb38\uc790\uc5f4 \uac80\uc0c9\uc744 \uc704\ud574 \uc0ac\uc6a9\ud558\ub294 \ud2b8\ub9ac \uc790\ub8cc \uad6c\uc870\uc785\ub2c8\ub2e4. \uac01 \ub178\ub4dc\ub294 \ubb38\uc790\uc5f4\uc758 \uac01 \ubb38\uc790\uc5d0 \ub300\ud55c \uacbd\ub85c\ub97c \ub098\ud0c0\ub0b4\uace0, \ub8e8\ud2b8\ubd80\ud130 \ub9ac\ud504\uae4c\uc9c0\uc758 \uacbd\ub85c\ub294 \ud558\ub098\uc758 … \ub354 \ubcf4\uae30 “\ucf54\ud2c0\ub9b0 \ucf54\ub529\ud14c\uc2a4\ud2b8 \uac15\uc88c, \ud2b8\ub77c\uc774”<\/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":[28],"tags":[],"class_list":["post-28612","post","type-post","status-publish","format-standard","hentry","category-28"],"yoast_head":"\n\ucf54\ud2c0\ub9b0 \ucf54\ub529\ud14c\uc2a4\ud2b8 \uac15\uc88c, \ud2b8\ub77c\uc774 - 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