{"id":26806,"date":"2024-10-27T11:52:53","date_gmt":"2024-10-27T11:52:53","guid":{"rendered":"http:\/\/atmokpo.com\/w\/?p=26806"},"modified":"2024-11-26T07:29:28","modified_gmt":"2024-11-26T07:29:28","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%84%a0%eb%b6%84%ec%9d%98-%ea%b5%90%ec%b0%a8-%ec%97%ac%eb%b6%80-%ea%b5%ac%ed%95%98%ea%b8%b0","status":"publish","type":"post","link":"https:\/\/atmokpo.com\/w\/26806\/","title":{"rendered":"\uc790\ubc14 \ucf54\ub529\ud14c\uc2a4\ud2b8 \uac15\uc88c, \uc120\ubd84\uc758 \uad50\ucc28 \uc5ec\ubd80 \uad6c\ud558\uae30"},"content":{"rendered":"

<\/p>\n

\n
\n

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

\n \ub450 \uc120\ubd84\uc774 \uc8fc\uc5b4\uc9c8 \ub54c, \uc774 \ub450 \uc120\ubd84\uc774 \uad50\ucc28\ud558\ub294\uc9c0 \uc5ec\ubd80\ub97c \ud310\ubcc4\ud558\ub294 \uc54c\uace0\ub9ac\uc998\uc744 \uad6c\ud604\ud558\uc2dc\uc624.
\n \uc120\ubd84 A\ub294 \uc810 A1(x1, y1)\uc640 \uc810 A2(x2, y2)\ub85c \uc8fc\uc5b4\uc9c0\uba70, \uc120\ubd84 B\ub294 \uc810 B1(x3, y3)\uc640 \uc810 B2(x4, y4)\ub85c \uc8fc\uc5b4\uc9c4\ub2e4.
\n \uad50\ucc28 \uc5ec\ubd80\ub294 \uc120\ubd84\uc774 \uc11c\ub85c \uad50\ucc28\ud558\ub294 \uacbd\uc6b0, \uc120\ubd84\uc758 \ub05d\uc810\uc774 \ub2e4\ub978 \uc120\ubd84\uc758 \uc548\ucabd\uc5d0 \uc704\uce58\ud558\ub294 \uacbd\uc6b0, \ud639\uc740 \uc120\ubd84\uc774 \uc77c\uc9c1\uc120 \uc0c1\uc5d0 \uc704\uce58\ud558\ub294 \uacbd\uc6b0\ub97c \uace0\ub824\ud558\uc5ec \ud310\ub2e8\ud55c\ub2e4.\n <\/p>\n<\/section>\n

\n

\uc608\uc81c \uc785\ub825<\/h2>\n
\n            A1: (1, 1)\n            A2: (4, 4)\n            B1: (1, 4)\n            B2: (4, 1)\n        <\/pre>\n
\uc608\uc81c \ucd9c\ub825<\/h2>\n
\uad50\ucc28\ud568<\/pre>\n<\/section>\n
\n
\ubb38\uc81c \ud480\uc774 \uacfc\uc815<\/h2>\n
\n            \uc774 \ubb38\uc81c\ub97c \ud574\uacb0\ud558\uae30 \uc704\ud574 \uc6b0\ub9ac\ub294 \uba87 \uac00\uc9c0 \uc9c0\ub9ac\uc801 \uac1c\ub150\uacfc \uc218\ud559\uc801 \uacc4\uc0b0\uc744 \ud65c\uc6a9\ud560 \uac83\uc785\ub2c8\ub2e4.
\n            \uc120\ubd84 \uad50\ucc28 \uc5ec\ubd80\ub97c \ud310\ub2e8\ud558\uae30 \uc704\ud574 \uc6b0\uc120 \ub450 \uc120\ubd84\uc758 \ubc29\ud5a5\uc744 \ud30c\uc545\ud558\uace0, \uadf8\uc5d0 \ub530\ub77c \uad50\ucc28 \uc5ec\ubd80\ub97c \uacb0\uc815\ud558\ub294 \ubc29\ubc95\uc744 \uc0ac\uc6a9\ud569\ub2c8\ub2e4.\n        <\/p>\n
1\ub2e8\uacc4: \ubc29\ud5a5 \uacc4\uc0b0<\/h3>\n
\n            \uc8fc\uc5b4\uc9c4 \ub450 \uc120\ubd84\uc758 \ub05d\uc810\ub4e4\uc744 \uc774\uc6a9\ud558\uc5ec, \uac01 \uc120\ubd84\uc774 \uc704\uce58\ud558\ub294 \ubc29\ud5a5\uc744 \uacc4\uc0b0\ud569\ub2c8\ub2e4.
\n            \ub450 \uc120\ubd84 A(A1, A2)\uc640 B(B1, B2)\uac00 \uc788\uc744 \ub54c, \uc6b0\ub9ac\ub294 \ub2e4\uc74c\uacfc \uac19\uc740 \ubc29\ubc95\uc73c\ub85c \ubc29\ud5a5\uc744 \uacc4\uc0b0\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4:\n        <\/p>\n
\n            def \ubc29\ud5a5(a1, a2, b1, b2):\n                # \ubc29\ud5a5 \ud310\ub2e8\uc744 \uc704\ud55c \ud568\uc218\n                \ucc28 = (a2[0] - a1[0]) * (b1[1] - a1[1]) - (a2[1] - a1[1]) * (b1[0] - a1[0])\n                if \ucc28 == 0:\n                    return 0  # \uac19\uc740 \ubc29\ud5a5\n                return 1 if \ucc28 > 0 else -1  # \uc67c\ucabd(+) \ub610\ub294 \uc624\ub978\ucabd(-)\n        <\/pre>\n
2\ub2e8\uacc4: \uad50\ucc28 \uc870\uac74<\/h3>\n
\n            \ub450 \uc120\ubd84\uc774 \uc11c\ub85c \uad50\ucc28\ud558\ub294\uc9c0 \uc5ec\ubd80\ub294 \ub2e4\uc74c\uacfc \uac19\uc740 \uc870\uac74\uc5d0 \ub530\ub77c \ud310\ub2e8\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4:\n        <\/p>\n
    \n
  1. \uc120\ubd84 A\uc758 \ubc29\ud5a5\uc774 B1, B2\uc5d0 \ub300\ud55c \uc9c0\uc810\uc5d0\uc11c \uc77c\uce58\ud558\uc9c0 \uc54a\uc73c\uba70, \uc120\ubd84 B\uc758 \ubc29\ud5a5\uc774 A1, A2\uc5d0 \ub300\ud55c \uc9c0\uc810\uc5d0\uc11c \uc77c\uce58\ud558\uc9c0 \uc54a\uc744 \uacbd\uc6b0, \ub450 \uc120\ubd84\uc740 \uc11c\ub85c \uad50\ucc28\ud569\ub2c8\ub2e4.<\/li>\n
  2. \uc120\ubd84 A\uc758 \uc810\ub4e4\uc774 \uc120\ubd84 B\uc758 \uc5f0\uc7a5\uc120\uc5d0 \uc874\uc7ac\ud560 \uacbd\uc6b0, \uc989 \uc120\uc758 \ub05d\uc810 \uc911 \ud558\ub098\uac00 \ub2e4\ub978 \uc120\uc758 \ub0b4\ubd80\uc5d0 \ud3ec\ud568\ub418\ub294 \uacbd\uc6b0\uc5d0\ub3c4 \uad50\ucc28\uc73c\ub85c \ud310\ub2e8\ud569\ub2c8\ub2e4.<\/li>\n
  3. \ubaa8\ub4e0 \uc810\uc774 \ub3d9\uc77c\ud55c \uc9c1\uc120 \uc0c1\uc5d0 \uc874\uc7ac\ud558\uba74\uc11c \ub05d\uc810\uc774 \uc11c\ub85c \uacb9\uce58\ub294 \uacbd\uc6b0, \uc989 \uc911\ubcf5 \ubc1c\uc0dd\uc2dc\uc5d0\ub294 \uad50\ucc28\ub85c \uac04\uc8fc\ud569\ub2c8\ub2e4.<\/li>\n<\/ol>\n
    3\ub2e8\uacc4: \uad6c\ud604<\/h3>\n
    \n            \uc774\uc81c \uc774 \uc870\uac74\uc744 \ubc14\ud0d5\uc73c\ub85c \uc790\ubc14\uc5d0\uc11c \uad6c\ud604\ud574 \ubcf4\uaca0\uc2b5\ub2c8\ub2e4.\n        <\/p>\n
    \n            public class LineIntersection {\n                static class Point {\n                    int x, y;\n                    Point(int x, int y) { this.x = x; this.y = y; }\n                }\n\n                static int direction(Point a1, Point a2, Point b) {\n                    int \ucc28 = (a2.x - a1.x) * (b.y - a1.y) - (a2.y - a1.y) * (b.x - a1.x);\n                    return (\ucc28 == 0) ? 0 : (\ucc28 > 0) ? 1 : -1; \n                }\n\n                static boolean isIntersect(Point a1, Point a2, Point b1, Point b2) {\n                    int d1 = direction(a1, a2, b1);\n                    int d2 = direction(a1, a2, b2);\n                    int d3 = direction(b1, b2, a1);\n                    int d4 = direction(b1, b2, a2);\n\n                    \/\/ Cross case\n                    if(d1 != d2 && d3 != d4) return true;\n\n                    \/\/ Collinear case\n                    if(d1 == 0 && onSegment(a1, a2, b1)) return true;\n                    if(d2 == 0 && onSegment(a1, a2, b2)) return true;\n                    if(d3 == 0 && onSegment(b1, b2, a1)) return true;\n                    if(d4 == 0 && onSegment(b1, b2, a2)) return true;\n\n                    return false; \n                }\n\n                static boolean onSegment(Point a, Point b, Point p) {\n                    return (p.x <= Math.max(a.x, b.x) && p.x >= Math.min(a.x, b.x) &&\n                            p.y <= Math.max(a.y, b.y) && p.y >= Math.min(a.y, b.y));\n                }\n\n                public static void main(String[] args) {\n                    Point A1 = new Point(1, 1);\n                    Point A2 = new Point(4, 4);\n                    Point B1 = new Point(1, 4);\n                    Point B2 = new Point(4, 1);\n\n                    if (isIntersect(A1, A2, B1, B2)) {\n                        System.out.println(\"\uad50\ucc28\ud568\");\n                    } else {\n                        System.out.println(\"\uad50\ucc28\ud558\uc9c0 \uc54a\uc74c\");\n                    }\n                }\n            }\n        <\/pre>\n
    \uc704\uc758 \ucf54\ub4dc\ub97c \uc2e4\ud589\ud558\uba74 \ub450 \uc120\ubd84 \uac04\uc758 \uad50\ucc28 \uc5ec\ubd80\ub97c \ud30c\uc545\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n
    4\ub2e8\uacc4: \ud14c\uc2a4\ud2b8<\/h3>\n
    \n            \ub2e4\uc591\ud55c \ud14c\uc2a4\ud2b8 \ucf00\uc774\uc2a4\ub97c \uc2dc\ub3c4\ud558\uc5ec \uc62c\ubc14\ub978 \ucf54\ub4dc \uc791\ub3d9 \uc5ec\ubd80\ub97c \ud655\uc778\ud569\ub2c8\ub2e4.\n        <\/p>\n
    \n            \/\/ Test Case 1\n            A1: (1, 1)\n            A2: (4, 4)\n            B1: (1, 4)\n            B2: (4, 1)  \/\/ Output: \uad50\ucc28\ud568\n\n            \/\/ Test Case 2\n            A1: (1, 1)\n            A2: (1, 3)\n            B1: (1, 2)\n            B2: (1, 4)  \/\/ Output: \uad50\ucc28\ud568\n\n            \/\/ Test Case 3\n            A1: (1, 1)\n            A2: (2, 2)\n            B1: (3, 3)\n            B2: (4, 4)  \/\/ Output: \uad50\ucc28\ud558\uc9c0 \uc54a\uc74c\n        <\/pre>\n
    \uc774\ucc98\ub7fc \ub2e4\uc591\ud55c \uc0ac\ub840\ub97c \ud1b5\ud574 \uc54c\uace0\ub9ac\uc998\uc774 \uc798 \uc791\ub3d9\ud558\ub294\uc9c0 \uac80\uc99d\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n<\/section>\n
    \n
    \uacb0\ub860<\/h2>\n
    \n            \uc774\ubc88 \uac15\uc88c\ub97c \ud1b5\ud574 \uc120\ubd84\uc758 \uad50\ucc28 \uc5ec\ubd80\ub97c \ud310\ub2e8\ud558\ub294 \uc54c\uace0\ub9ac\uc998\uc744 \uad6c\ud604\ud558\ub294 \ubc29\ubc95\uc744 \ubc30\uc6e0\uc2b5\ub2c8\ub2e4.
    \n            \ubb38\uc81c \ud574\uacb0\uc744 \uc704\ud574 \uae30\ud558\ud559\uc801 \uc0ac\uace0\uc640 \ucf54\ub4dc \uad6c\ud604\uc744 \ud1b5\ud574 \uad50\ucc28 \uc870\uac74\uc744 \uc774\ud574\ud558\uace0 \uc801\uc6a9\ud558\ub294 \uacfc\uc815\uc774\uc5c8\uc2b5\ub2c8\ub2e4.
    \n            \uc774 \uc9c0\uc2dd\uc740 \ub2e4\uc591\ud55c \uc751\uc6a9 \ubd84\uc57c\uc5d0\uc11c \uc0ac\uc6a9\ub418\ubbc0\ub85c, \uc54c\uace0\ub9ac\uc998\uacfc \uc790\ub8cc\uad6c\uc870\uc5d0 \ub300\ud55c \uc774\ud574\ub3c4\ub97c \ub192\uc774\ub294 \ub370 \ud070 \ub3c4\uc6c0\uc774 \ub420 \uac83\uc785\ub2c8\ub2e4.
    \n            \ud568\uaed8\ud55c \uc5ec\ub7ec\ubd84\ub4e4\uc774 \uc5ec\ub7ec \ubb38\uc81c\ub97c \ud480\uace0 \ub354 \ub098\uc544\uac00 \uae30\ubcf8\uae30\ub97c \ub2e4\uc9c0\ub294 \ub370\uc5d0 \uc774 \uac15\uc88c\uac00 \ub3c4\uc6c0\uc774 \ub418\uae30\ub97c \ubc14\ub78d\ub2c8\ub2e4.\n        <\/p>\n<\/section>\n<\/article>\n
    <\/body><\/p>\n","protected":false},"excerpt":{"rendered":"
    \ubb38\uc81c \uc124\uba85 \ub450 \uc120\ubd84\uc774 \uc8fc\uc5b4\uc9c8 \ub54c, \uc774 \ub450 \uc120\ubd84\uc774 \uad50\ucc28\ud558\ub294\uc9c0 \uc5ec\ubd80\ub97c \ud310\ubcc4\ud558\ub294 \uc54c\uace0\ub9ac\uc998\uc744 \uad6c\ud604\ud558\uc2dc\uc624. \uc120\ubd84 A\ub294 \uc810 A1(x1, y1)\uc640 \uc810 A2(x2, y2)\ub85c \uc8fc\uc5b4\uc9c0\uba70, \uc120\ubd84 B\ub294 \uc810 B1(x3, y3)\uc640 \uc810 B2(x4, y4)\ub85c \uc8fc\uc5b4\uc9c4\ub2e4. \uad50\ucc28 \uc5ec\ubd80\ub294 \uc120\ubd84\uc774 \uc11c\ub85c \uad50\ucc28\ud558\ub294 \uacbd\uc6b0, \uc120\ubd84\uc758 \ub05d\uc810\uc774 \ub2e4\ub978 \uc120\ubd84\uc758 \uc548\ucabd\uc5d0 \uc704\uce58\ud558\ub294 \uacbd\uc6b0, \ud639\uc740 \uc120\ubd84\uc774 \uc77c\uc9c1\uc120 \uc0c1\uc5d0 \uc704\uce58\ud558\ub294 \uacbd\uc6b0\ub97c \uace0\ub824\ud558\uc5ec \ud310\ub2e8\ud55c\ub2e4. \uc608\uc81c \uc785\ub825 … \ub354 \ubcf4\uae30 “\uc790\ubc14 \ucf54\ub529\ud14c\uc2a4\ud2b8 \uac15\uc88c, \uc120\ubd84\uc758 \uad50\ucc28 \uc5ec\ubd80 \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":[22],"tags":[],"class_list":["post-26806","post","type-post","status-publish","format-standard","hentry","category-22"],"yoast_head":"\n\uc790\ubc14 \ucf54\ub529\ud14c\uc2a4\ud2b8 \uac15\uc88c, \uc120\ubd84\uc758 \uad50\ucc28 \uc5ec\ubd80 \uad6c\ud558\uae30 - 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