{"id":26872,"date":"2024-10-27T11:53:20","date_gmt":"2024-10-27T11:53:20","guid":{"rendered":"http:\/\/atmokpo.com\/w\/?p=26872"},"modified":"2024-11-26T07:27:34","modified_gmt":"2024-11-26T07:27:34","slug":"%ec%9e%90%eb%b0%94-%ec%bd%94%eb%94%a9%ed%85%8c%ec%8a%a4%ed%8a%b8-%ea%b0%95%ec%a2%8c-%ec%9d%b4%ec%a7%84-%ed%8a%b8%eb%a6%ac","status":"publish","type":"post","link":"https:\/\/atmokpo.com\/w\/26872\/","title":{"rendered":"\uc790\ubc14 \ucf54\ub529\ud14c\uc2a4\ud2b8 \uac15\uc88c, \uc774\uc9c4 \ud2b8\ub9ac"},"content":{"rendered":"<p><body><\/p>\n<div class=\"problem\">\n<h2>\ubb38\uc81c \uc124\uba85<\/h2>\n<p>\uc774 \ubb38\uc81c\uc5d0\uc11c\ub294 \uc774\uc9c4 \ud2b8\ub9ac\uc758 \uac01 \ub178\ub4dc\uc5d0 \ub300\ud574 \uac12\uc744 \uc800\uc7a5\ud558\uace0, \ud2b9\uc815 \uac12\uc744 \uac00\uc9c4 \ub178\ub4dc\ub97c \ucc3e\uc544 \uc774\uc9c4 \ud2b8\ub9ac\uc5d0\uc11c\uc758 \ub192\uc774\ub97c \ubc18\ud658\ud558\ub294 \uc54c\uace0\ub9ac\uc998\uc744 \uc791\uc131\ud574\uc57c \ud569\ub2c8\ub2e4. \uc8fc\uc5b4\uc9c4 \uc774\uc9c4 \ud2b8\ub9ac\ub294 \ub2e4\uc74c\uacfc \uac19\uc740 \ud615\ud0dc\ub85c \uc815\uc758\ub429\ub2c8\ub2e4:<\/p>\n<pre>\n        class TreeNode {\n            int val;\n            TreeNode left;\n            TreeNode right;\n            TreeNode(int x) { val = x; }\n        }\n        <\/pre>\n<h3>\ubb38\uc81c: \uc774\uc9c4 \ud2b8\ub9ac\uc758 \ud2b9\uc815 \uac12\uc5d0 \ub300\ud55c \ub192\uc774 \uacc4\uc0b0<\/h3>\n<p>\uc8fc\uc5b4\uc9c4 \uc774\uc9c4 \ud2b8\ub9ac\uc758 \ub8e8\ud2b8 \ub178\ub4dc\uc640 \ud2b9\uc815 \uac12 <code>target<\/code>\uc774 \uc8fc\uc5b4\uc9c4\ub2e4. \uc774\uc9c4 \ud2b8\ub9ac\uc5d0\uc11c <code>target<\/code>\uc758 \ub178\ub4dc\uc758 \ub192\uc774\ub97c \ubc18\ud658\ud558\ub77c. \ub178\ub4dc\uc758 \ub192\uc774\ub294 \ud574\ub2f9 \ub178\ub4dc\uc5d0\uc11c \ub9ac\ud504 \ub178\ub4dc\uae4c\uc9c0\uc758 \uac00\uc7a5 \uae34 \uacbd\ub85c\uc758 \uae38\uc774\ub85c \uc815\uc758\ub41c\ub2e4. \ub9cc\uc57d \ubaa9\ud45c\uac12\uc744 \uac00\uc9c4 \ub178\ub4dc\uac00 \uc5c6\uc73c\uba74 -1\uc744 \ubc18\ud658\ud55c\ub2e4.<\/p>\n<h3>\uc785\ub825<\/h3>\n<ul>\n<li><code>TreeNode root<\/code>: \uc774\uc9c4 \ud2b8\ub9ac\uc758 \ub8e8\ud2b8 \ub178\ub4dc<\/li>\n<li><code>int target<\/code>: \ud0d0\uc0c9\ud560 \uac12<\/li>\n<\/ul>\n<h3>\ucd9c\ub825<\/h3>\n<ul>\n<li>target\uc758 \ub192\uc774, target\uc744 \ucc3e\uc744 \uc218 \uc5c6\ub294 \uacbd\uc6b0 -1<\/li>\n<\/ul>\n<\/div>\n<div class=\"solution\">\n<h2>\ud574\uacb0 \ubc29\ubc95<\/h2>\n<p>\uc774 \ubb38\uc81c\ub97c \ud574\uacb0\ud558\uae30 \uc704\ud574\uc11c\ub294 \uba3c\uc800 \uc774\uc9c4 \ud2b8\ub9ac\uc758 \ub192\uc774\ub97c \uacc4\uc0b0\ud558\ub294 \uc54c\uace0\ub9ac\uc998\uc744 \uc774\ud574\ud558\uace0 \uad6c\ud604\ud560 \ud544\uc694\uac00 \uc788\uc2b5\ub2c8\ub2e4. \uae4a\uc774 \uc6b0\uc120 \ud0d0\uc0c9(DFS) \ubc29\uc2dd\uc73c\ub85c \ud2b8\ub9ac\ub97c \ud0d0\uc0c9\ud558\uba74\uc11c, \ubaa9\ud45c\ud55c \uac12\uacfc \uc77c\uce58\ud558\ub294 \ub178\ub4dc\ub97c \ucc3e\uace0, \ud574\ub2f9 \ub178\ub4dc\uc758 \ub192\uc774\ub97c \ubc18\ud658\ud558\ub3c4\ub85d \uc124\uacc4\ud569\ub2c8\ub2e4.<\/p>\n<h3>\ub2e8\uacc4\ubcc4 \ud480\uc774<\/h3>\n<ol>\n<li>\n<strong>\uc774\uc9c4 \ud2b8\ub9ac\uc758 \uad6c\uc870 \uc774\ud574\ud558\uae30:<\/strong> \uc774\uc9c4 \ud2b8\ub9ac\ub294 \uac01 \ub178\ub4dc\uac00 \ucd5c\ub300 \ub450 \uac1c\uc758 \uc790\uc2dd \ub178\ub4dc\ub97c \uac00\uc9c0\ub294 \ud2b8\ub9ac \uad6c\uc870\uc785\ub2c8\ub2e4. \uac01 \ub178\ub4dc\ub294 \ub370\uc774\ud130\ub97c \uc800\uc7a5\ud558\uace0 \uc788\uc2b5\ub2c8\ub2e4.\n            <\/li>\n<li>\n<strong>\uae4a\uc774 \uc6b0\uc120 \ud0d0\uc0c9(DFS) \uad6c\ud604:<\/strong> \uc7ac\uadc0\uc801\uc73c\ub85c \ub370\uc774\ud130\ub97c \ud0d0\uc0c9\ud558\uba70, \ubaa9\ud45c \ub178\ub4dc\ub97c \ucc3e\ub3c4\ub85d \ud569\ub2c8\ub2e4.\n            <\/li>\n<li>\n<strong>\ub192\uc774 \uacc4\uc0b0\ud558\uae30:<\/strong> \ubaa9\ud45c \ub178\ub4dc\ub97c \ucc3e\uc73c\uba74 \uadf8 \ub178\ub4dc\uc5d0\uc11c \ub9ac\ud504\uae4c\uc9c0\uc758 \ucd5c\ub300 \uae4a\uc774\ub97c \uacc4\uc0b0\ud569\ub2c8\ub2e4.\n            <\/li>\n<li>\n<strong>\uacb0\uacfc \ubc18\ud658:<\/strong> \ubaa9\ud45c \ub178\ub4dc\ub97c \ucc3e\uc73c\uba74 \uadf8 \ub192\uc774\ub97c \ubc18\ud658\ud558\uace0, \ucc3e\uc9c0 \ubabb\ud558\uba74 -1\uc744 \ubc18\ud658\ud569\ub2c8\ub2e4.\n            <\/li>\n<\/ol>\n<h3>\uc790\ubc14 \ucf54\ub4dc \uad6c\ud604<\/h3>\n<pre>\n        public class Solution {\n            public int findHeight(TreeNode root, int target) {\n                return findNodeHeight(root, target, 0);\n            }\n\n            private int findNodeHeight(TreeNode node, int target, int depth) {\n                if (node == null) {\n                    return -1; \/\/ \ub178\ub4dc\uac00 \uc5c6\uc73c\uba74 -1 \ubc18\ud658\n                }\n                \n                \/\/ \ud604\uc7ac \ub178\ub4dc\uac00 \ubaa9\ud45c \ub178\ub4dc\uc778 \uacbd\uc6b0\n                if (node.val == target) {\n                    return getHeight(node);\n                }\n                \n                \/\/ \ub9ac\ud504 \ub178\ub4dc\uac00 \uc544\ub2d0 \uacbd\uc6b0 \uc790\uc2dd \ub178\ub4dc \ud0d0\uc0c9\n                int leftHeight = findNodeHeight(node.left, target, depth + 1);\n                int rightHeight = findNodeHeight(node.right, target, depth + 1);\n\n                \/\/ \uc67c\ucabd \ub178\ub4dc\uc5d0\uc11c \ubaa9\ud45c \ub178\ub4dc\ub97c \ucc3e\uc558\ub2e4\uba74 \uadf8 \ub192\uc774\ub97c \ubc18\ud658\n                if (leftHeight != -1) {\n                    return leftHeight;\n                }\n                \/\/ \uc624\ub978\ucabd \ub178\ub4dc\uc5d0\uc11c \ubaa9\ud45c \ub178\ub4dc\ub97c \ucc3e\uc558\ub2e4\uba74 \uadf8 \ub192\uc774\ub97c \ubc18\ud658\n                return rightHeight;\n            }\n\n            private int getHeight(TreeNode node) {\n                if (node == null) return -1; \/\/ \ub9ac\ud504 \ub178\ub4dc\uc758 \uacbd\uc6b0 \uae4a\uc774\ub294 -1\n                \n                \/\/ \uc67c\ucabd\uacfc \uc624\ub978\ucabd \uc11c\ube0c\ud2b8\ub9ac\uc758 \uae4a\uc774\ub97c \uc7ac\uadc0\uc801\uc73c\ub85c \uacc4\uc0b0\n                int leftHeight = getHeight(node.left);\n                int rightHeight = getHeight(node.right);\n                \n                \/\/ \ud604\uc7ac \ub178\ub4dc\uc5d0\uc11c \ub9ac\ud504 \ub178\ub4dc\uae4c\uc9c0\uc758 \ucd5c\ub300 \uae4a\uc774 \ubc18\ud658\n                return Math.max(leftHeight, rightHeight) + 1;\n            }\n        }\n        <\/pre>\n<h3>\ucf54\ub4dc \uc124\uba85<\/h3>\n<p>\uc704\uc758 \ucf54\ub4dc\uc5d0\uc11c <code>findHeight<\/code> \uba54\uc11c\ub4dc\ub294 \ub8e8\ud2b8 \ub178\ub4dc\uc640 \ubaa9\ud45c\uac12\uc744 \uc778\uc790\ub85c \ubc1b\uc544 \ub178\ub4dc\ub97c \ud0d0\uc0c9\ud569\ub2c8\ub2e4. <code>findNodeHeight<\/code>\ub294 \uc7ac\uadc0\uc801\uc73c\ub85c \uac01 \ub178\ub4dc\ub97c \ud0d0\uc0c9\ud558\uba70 \ubaa9\ud45c\ud55c \uac12\uc744 \ucc3e\uc544 \uadf8 \ub192\uc774\ub97c \uacc4\uc0b0\ud569\ub2c8\ub2e4. <code>getHeight<\/code> \uba54\uc11c\ub4dc\ub294 \ud2b9\uc815 \ub178\ub4dc\uc758 \uae4a\uc774\ub97c \uacc4\uc0b0\ud558\uae30 \uc704\ud574 \ud638\ucd9c\ub429\ub2c8\ub2e4. <\/p>\n<h3>\uc608\uc2dc<\/h3>\n<p>\uc544\ub798\uc758 \uc774\uc9c4 \ud2b8\ub9ac\ub97c \uace0\ub824\ud574 \ubcf4\uaca0\uc2b5\ub2c8\ub2e4.<\/p>\n<pre>\n                  1\n                 \/ \\\n                2   3\n               \/ \\\n              4   5\n        <\/pre>\n<p>\uc774\uc9c4 \ud2b8\ub9ac\uc5d0 \ub300\ud558\uc5ec <code>target = 3<\/code>\uc77c \ub54c, \ud574\ub2f9 \ub178\ub4dc\uc758 \ub192\uc774\ub294 0\uc785\ub2c8\ub2e4. <code>target = 2<\/code>\uc77c \ub54c \ub192\uc774\ub294 1\uc785\ub2c8\ub2e4. <code>target = 4<\/code>\uc77c \ub54c \ub192\uc774\ub294 2\uc785\ub2c8\ub2e4. \uc874\uc7ac\ud558\uc9c0 \uc54a\ub294 \ub178\ub4dc\uc5d0 \ub300\ud574\uc11c\ub294 -1\uc744 \ubc18\ud658\ud574\uc57c \ud558\uba70, \uc608\ub97c \ub4e4\uc5b4 <code>target = 6<\/code>\uc77c \ub54c \uacb0\uacfc\ub294 -1\uc785\ub2c8\ub2e4.<\/p>\n<h3>\uacb0\ub860<\/h3>\n<p>\uc774\ubc88 \uac15\uc88c\uc5d0\uc11c\ub294 \uc774\uc9c4 \ud2b8\ub9ac\ub97c \ud0d0\uc0c9\ud558\ub294 \ubc29\ubc95\uacfc \ub192\uc774\ub97c \uacc4\uc0b0\ud558\ub294 \ubc29\ubc95\uc5d0 \ub300\ud574 \uc54c\uc544\ubcf4\uc558\uc2b5\ub2c8\ub2e4. \uc774\ub7ec\ud55c \ud2b8\ub9ac \uad6c\uc870\ub294 \ucf54\ub529 \ud14c\uc2a4\ud2b8\uc5d0\uc11c \uc790\uc8fc \ub4f1\uc7a5\ud558\ubbc0\ub85c \uc798 \uc774\ud574\ud558\uace0 \uc5f0\uc2b5\ud574 \ub450\ub294 \uac83\uc774 \uc911\uc694\ud569\ub2c8\ub2e4. \uc54c\uace0\ub9ac\uc998\uc744 \uc5f0\uc2b5\ud560\uc218\ub85d \uac01 \ubb38\uc81c\ub97c \ud574\uacb0\ud558\ub294 \ub370 \ud544\uc694\ud55c \uc0ac\uace0 \uacfc\uc815\uc774 \uc0dd\uae30\uace0, \uc790\uc2e0\uac10\uc744 \uac16\uac8c \ub420 \uac83\uc785\ub2c8\ub2e4.<\/p>\n<\/div>\n<p><\/body><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\ubb38\uc81c \uc124\uba85 \uc774 \ubb38\uc81c\uc5d0\uc11c\ub294 \uc774\uc9c4 \ud2b8\ub9ac\uc758 \uac01 \ub178\ub4dc\uc5d0 \ub300\ud574 \uac12\uc744 \uc800\uc7a5\ud558\uace0, \ud2b9\uc815 \uac12\uc744 \uac00\uc9c4 \ub178\ub4dc\ub97c \ucc3e\uc544 \uc774\uc9c4 \ud2b8\ub9ac\uc5d0\uc11c\uc758 \ub192\uc774\ub97c \ubc18\ud658\ud558\ub294 \uc54c\uace0\ub9ac\uc998\uc744 \uc791\uc131\ud574\uc57c \ud569\ub2c8\ub2e4. \uc8fc\uc5b4\uc9c4 \uc774\uc9c4 \ud2b8\ub9ac\ub294 \ub2e4\uc74c\uacfc \uac19\uc740 \ud615\ud0dc\ub85c \uc815\uc758\ub429\ub2c8\ub2e4: class TreeNode { int val; TreeNode left; TreeNode right; TreeNode(int x) { val = x; } } \ubb38\uc81c: \uc774\uc9c4 \ud2b8\ub9ac\uc758 \ud2b9\uc815 \uac12\uc5d0 \ub300\ud55c \ub192\uc774 \uacc4\uc0b0 &hellip; <a href=\"https:\/\/atmokpo.com\/w\/26872\/\" class=\"more-link\">\ub354 \ubcf4\uae30<span class=\"screen-reader-text\"> &#8220;\uc790\ubc14 \ucf54\ub529\ud14c\uc2a4\ud2b8 \uac15\uc88c, \uc774\uc9c4 \ud2b8\ub9ac&#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":[22],"tags":[],"class_list":["post-26872","post","type-post","status-publish","format-standard","hentry","category-22"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.2 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>\uc790\ubc14 \ucf54\ub529\ud14c\uc2a4\ud2b8 \uac15\uc88c, \uc774\uc9c4 \ud2b8\ub9ac - \ub77c\uc774\ube0c\uc2a4\ub9c8\ud2b8<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/atmokpo.com\/w\/26872\/\" \/>\n<meta property=\"og:locale\" content=\"ko_KR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"\uc790\ubc14 \ucf54\ub529\ud14c\uc2a4\ud2b8 \uac15\uc88c, \uc774\uc9c4 \ud2b8\ub9ac - \ub77c\uc774\ube0c\uc2a4\ub9c8\ud2b8\" \/>\n<meta property=\"og:description\" content=\"\ubb38\uc81c \uc124\uba85 \uc774 \ubb38\uc81c\uc5d0\uc11c\ub294 \uc774\uc9c4 \ud2b8\ub9ac\uc758 \uac01 \ub178\ub4dc\uc5d0 \ub300\ud574 \uac12\uc744 \uc800\uc7a5\ud558\uace0, \ud2b9\uc815 \uac12\uc744 \uac00\uc9c4 \ub178\ub4dc\ub97c \ucc3e\uc544 \uc774\uc9c4 \ud2b8\ub9ac\uc5d0\uc11c\uc758 \ub192\uc774\ub97c \ubc18\ud658\ud558\ub294 \uc54c\uace0\ub9ac\uc998\uc744 \uc791\uc131\ud574\uc57c \ud569\ub2c8\ub2e4. \uc8fc\uc5b4\uc9c4 \uc774\uc9c4 \ud2b8\ub9ac\ub294 \ub2e4\uc74c\uacfc \uac19\uc740 \ud615\ud0dc\ub85c \uc815\uc758\ub429\ub2c8\ub2e4: class TreeNode { int val; TreeNode left; TreeNode right; TreeNode(int x) { val = x; } } \ubb38\uc81c: \uc774\uc9c4 \ud2b8\ub9ac\uc758 \ud2b9\uc815 \uac12\uc5d0 \ub300\ud55c \ub192\uc774 \uacc4\uc0b0 &hellip; \ub354 \ubcf4\uae30 &quot;\uc790\ubc14 \ucf54\ub529\ud14c\uc2a4\ud2b8 \uac15\uc88c, \uc774\uc9c4 \ud2b8\ub9ac&quot;\" \/>\n<meta property=\"og:url\" content=\"https:\/\/atmokpo.com\/w\/26872\/\" \/>\n<meta property=\"og:site_name\" content=\"\ub77c\uc774\ube0c\uc2a4\ub9c8\ud2b8\" \/>\n<meta property=\"article:published_time\" content=\"2024-10-27T11:53:20+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2024-11-26T07:27:34+00:00\" \/>\n<meta name=\"author\" content=\"root\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@bebubo4\" \/>\n<meta name=\"twitter:site\" content=\"@bebubo4\" \/>\n<meta name=\"twitter:label1\" content=\"\uae00\uc4f4\uc774\" \/>\n\t<meta name=\"twitter:data1\" content=\"root\" \/>\n\t<meta name=\"twitter:label2\" content=\"\uc608\uc0c1 \ub418\ub294 \ud310\ub3c5 \uc2dc\uac04\" \/>\n\t<meta name=\"twitter:data2\" content=\"1\ubd84\" \/>\n<script type=\"application\/ld+json\" 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