\ucf54\ub529\ud14c\uc2a4\ud2b8\uc5d0\uc11c \uc218 \uc815\ub82c\ud558\uae30\ub294 \ub9e4\uc6b0 \uae30\ubcf8\uc801\uc774\uba74\uc11c\ub3c4 \uc911\uc694\ud55c \ubb38\uc81c\uc785\ub2c8\ub2e4. \uc774 \uae00\uc5d0\uc11c\ub294 C++\ub97c \uc0ac\uc6a9\ud558\uc5ec \uc218\ub97c \uc815\ub82c\ud558\ub294 \ubc29\ubc95\uc5d0 \ub300\ud574 \uc2ec\ub3c4 \uae4a\uc740 \uc124\uba85\uacfc \ud568\uaed8 \uc54c\uace0\ub9ac\uc998 \ubb38\uc81c\ub97c \ud574\uacb0\ud558\ub294 \uacfc\uc815\uc744 \uc548\ub0b4\ud558\uaca0\uc2b5\ub2c8\ub2e4.<\/p>\n
\ubb38\uc81c \uc124\uba85<\/h2>\n
\ubb38\uc81c\ub294 \uc8fc\uc5b4\uc9c4 \uc218\ub4e4\uc744 \uc815\ub82c\ud558\uc5ec \ucd9c\ub825\ud558\ub294 \uac83\uc785\ub2c8\ub2e4. \uad6c\uccb4\uc801\uc778 \uc785\ub825\uacfc \ucd9c\ub825\uc758 \uc870\uac74\uc740 \ub2e4\uc74c\uacfc \uac19\uc2b5\ub2c8\ub2e4.<\/p>\n
- \n
- \uccab\uc9f8 \uc904\uc5d0\ub294 \uc815\ub82c\ud560 \uc6d0\uc18c\uc758 \uac1c\uc218 N\uc774 \uc8fc\uc5b4\uc9d1\ub2c8\ub2e4. (1 \u2264 N \u2264 1,000,000)<\/li>\n
- \ub458\uc9f8 \uc904\uc5d0\ub294 N\uac1c\uc758 \uc815\uc218 A[1], A[2], …, A[N]\uc774 \uc8fc\uc5b4\uc9d1\ub2c8\ub2e4. (\u22121,000,000,000 \u2264 A[i] \u2264 1,000,000,000)<\/li>\n<\/ul>\n
\ucd9c\ub825\uc740 \uc624\ub984\ucc28\uc21c\uc73c\ub85c \uc815\ub82c\ub41c N\uac1c\uc758 \uc815\uc218\ub97c \ud55c \uc904\uc5d0 \ud558\ub098\uc529 \ucd9c\ub825\ud574\uc57c \ud569\ub2c8\ub2e4.<\/p>\n
\uc785\ub825 \uc608\uc2dc<\/h2>\n
\n 5\n 5\n 4\n 3\n 2\n 1\n <\/pre>\n
\ucd9c\ub825 \uc608\uc2dc<\/h2>\n
\n 1\n 2\n 3\n 4\n 5\n <\/pre>\n
\ubb38\uc81c \ud480\uc774 \uacfc\uc815<\/h2>\n
\ubb38\uc81c\ub97c \ud574\uacb0\ud558\uae30 \uc704\ud574 \uc5ec\ub7ec \uac00\uc9c0 \ubc29\ubc95\uc774 \uc788\uc9c0\ub9cc, \uc5ec\uae30\uc11c\ub294 C++\uc758 STL(Standard Template Library)\uc744 \ud65c\uc6a9\ud55c sorting \uc54c\uace0\ub9ac\uc998\uc744 \uc774\uc6a9\ud560 \uac83\uc785\ub2c8\ub2e4. STL\uc758
sort()<\/code> \ud568\uc218\ub294 \ube60\ub974\uace0 \ud6a8\uc728\uc801\uc778 \uc815\ub82c \uc54c\uace0\ub9ac\uc998\uc73c\ub85c, \uc77c\ubc18\uc801\uc73c\ub85c O(N log N)\uc758 \uc2dc\uac04 \ubcf5\uc7a1\ub3c4\ub97c \uac00\uc9d1\ub2c8\ub2e4.<\/p>\n1. \ud544\uc694\ud55c \ud5e4\ub354 \ud30c\uc77c \ud3ec\ud568\ud558\uae30<\/h3>\n
STL\uc758 sort \ud568\uc218\uc640 \ubca1\ud130\ub97c \uc0ac\uc6a9\ud558\uae30 \uc704\ud574 \ud544\uc694\ud55c \ud5e4\ub354 \ud30c\uc77c\uc744 \ud3ec\ud568\ud569\ub2c8\ub2e4.<\/p>\n
\n #include <iostream>\n #include <vector>\n #include <algorithm>\n using namespace std;\n <\/pre>\n
2. \uba54\uc778 \ud568\uc218 \uc791\uc131\ud558\uae30<\/h3>\n
\uc785\ub825\uc744 \ucc98\ub9ac\ud558\uace0, \uc815\ub82c \ud6c4 \uacb0\uacfc\ub97c \ucd9c\ub825\ud558\ub294 \uba54\uc778 \ud568\uc218\ub97c \uc791\uc131\ud558\uaca0\uc2b5\ub2c8\ub2e4.<\/p>\n
\n int main() {\n int N;\n cin >> N; \/\/ \uc6d0\uc18c\uc758 \uac1c\uc218 \uc785\ub825 \ubc1b\uae30\n vector<int> A(N); \/\/ \ud06c\uae30\uac00 N\uc778 \ubca1\ud130 A \uc120\uc5b8\n\n \/\/ N\uac1c\uc758 \uc815\uc218 \uc785\ub825 \ubc1b\uae30\n for(int i = 0; i < N; i++) {\n cin >> A[i];\n }\n\n \/\/ \ubca1\ud130 A \uc815\ub82c\n sort(A.begin(), A.end());\n\n \/\/ \uc815\ub82c\ub41c \uacb0\uacfc \ucd9c\ub825\n for(const int &num : A) {\n cout << num << endl;\n }\n\n return 0;\n }\n <\/pre>\n3. \ucf54\ub4dc \uc124\uba85<\/h3>\n
\uc704 \ucf54\ub4dc\ub294 \ub2e4\uc74c\uacfc \uac19\uc740 \ub2e8\uacc4\ub85c \uc791\ub3d9\ud569\ub2c8\ub2e4:<\/p>\n
- \n
- \uc815\uc218 N\uc744 \uc785\ub825 \ubc1b\uc544 \uc815\ub82c\ud560 \uc22b\uc790\uc758 \uac1c\uc218\ub97c \uacb0\uc815\ud569\ub2c8\ub2e4.<\/li>\n
- \ud06c\uae30\uac00 N\uc778 \ubca1\ud130 A\ub97c \uc0dd\uc131\ud558\uc5ec, N\uac1c\uc758 \uc815\uc218\ub97c \uc785\ub825 \ubc1b\uc2b5\ub2c8\ub2e4.<\/li>\n
- STL\uc758
sort()<\/code> \ud568\uc218\ub97c \uc0ac\uc6a9\ud558\uc5ec \ubca1\ud130 A\ub97c \uc815\ub82c\ud569\ub2c8\ub2e4.<\/li>\n- \uc815\ub82c\ub41c \ubca1\ud130\uc758 \ub0b4\uc6a9\uc744 \ucd9c\ub825\ud569\ub2c8\ub2e4.<\/li>\n<\/ol>\n
\uc2dc\uac04 \ubcf5\uc7a1\ub3c4 \ubd84\uc11d<\/h2>\n
\ubcf8 \ubb38\uc81c\ub97c \ud574\uacb0\ud558\uae30 \uc704\ud55c \uc54c\uace0\ub9ac\uc998\uc758 \uc2dc\uac04 \ubcf5\uc7a1\ub3c4\ub294 O(N log N)\uc785\ub2c8\ub2e4. \uc774\ub294 \uc785\ub825\ubc1b\ub294 \uc6d0\uc18c\uc758 \uac1c\uc218 N\uc5d0 \ube44\ub840\ud558\uc5ec \uc99d\uac00\ud558\uc9c0\ub9cc, \uac00\uc7a5 \uc77c\ubc18\uc801\uc778 \uc815\ub82c \uc54c\uace0\ub9ac\uc998\uc778 quicksort\ub97c \uae30\ubc18\uc73c\ub85c \ud558\uae30 \ub54c\ubb38\uc5d0 \uc2e4\uc9c8\uc801\uc73c\ub85c \ub9e4\uc6b0 \ube60\ub978 \uc131\ub2a5\uc744 \ubc1c\ud718\ud569\ub2c8\ub2e4.<\/p>\n
\uacf5\uac04 \ubcf5\uc7a1\ub3c4 \ubd84\uc11d<\/h2>\n
\uacf5\uac04 \ubcf5\uc7a1\ub3c4\ub294 O(N)\uc785\ub2c8\ub2e4. \ubca1\ud130 A\ub294 \uc785\ub825\ub41c \ubaa8\ub4e0 \uc218\ub97c \uc800\uc7a5\ud558\uae30 \uc704\ud574 N\uac1c\uc758 \uacf5\uac04\uc744 \ud560\ub2f9\ubc1b\uae30 \ub54c\ubb38\uc785\ub2c8\ub2e4. STL\uc744 \uc0ac\uc6a9\ud558\uc5ec \uacf5\uac04 \uad00\ub9ac\uac00 \ud6a8\uc728\uc801\uc774\uba70, \ubc30\uc5f4 \ub300\uc2e0 \ubca1\ud130\ub97c \uc0ac\uc6a9\ud568\uc73c\ub85c\uc368 \uba54\ubaa8\ub9ac \uad00\ub9ac\uac00 \uc6a9\uc774\ud569\ub2c8\ub2e4.<\/p>\n
\uacb0\ub860<\/h2>\n
\uc774\ubc88 \ud3ec\uc2a4\ud305\uc5d0\uc11c\ub294 C++\ub97c \ud65c\uc6a9\ud558\uc5ec \uae30\ubcf8\uc801\uc778 \uc218 \uc815\ub82c \ubb38\uc81c\ub97c \uacbd\ud5d8\ud574 \ubcf4\uc558\uc2b5\ub2c8\ub2e4. \ucf54\ub529\ud14c\uc2a4\ud2b8\uc5d0\uc11c \uc790\uc8fc \ucd9c\uc81c\ub418\ub294 \ubb38\uc81c \uc911 \ud558\ub098\uc778 \uc218 \uc815\ub82c\ud558\uae30 \ubb38\uc81c\ub97c \ud1b5\ud574, STL\uc744 \ud65c\uc6a9\ud55c \uc815\ub82c \uc54c\uace0\ub9ac\uc998\uc758 \uc0ac\uc6a9\ubc95\uc744 \uc775\ud788\uace0, \uc2dc\uac04 \ubcf5\uc7a1\ub3c4\uc640 \uacf5\uac04 \ubcf5\uc7a1\ub3c4\ub97c \ubd84\uc11d\ud558\ub294 \ubc29\ubc95\uc744 \ubc30\uc6e0\uc2b5\ub2c8\ub2e4. \uc774\ub7ec\ud55c \uae30\ubcf8\uc801\uc778 \ubb38\uc81c\ub4e4\uc5d0 \ub300\ud55c \uc774\ud574\ub294 \ud5a5\ud6c4 \ub354 \ubcf5\uc7a1\ud55c \ubb38\uc81c\ub97c \ud574\uacb0\ud558\ub294 \ub370 \ud070 \ub3c4\uc6c0\uc774 \ub420 \uac83\uc785\ub2c8\ub2e4.<\/p>\n
\ucd94\uac00 \uc5f0\uc2b5 \ubb38\uc81c<\/h2>\n
\ub354 \ub9ce\uc740 \uc5f0\uc2b5\uc744 \uc704\ud574 \ub2e4\uc74c\uacfc \uac19\uc740 \ubcc0\ud615 \ubb38\uc81c\ub97c \uc2dc\ub3c4\ud574 \ubcf4\uc138\uc694:<\/p>\n
- \n
- \uc785\ub825\uc73c\ub85c \uc8fc\uc5b4\uc9c4 \uc218\ub4e4 \uc911 \uc911\ubcf5\ub41c \uc218\ub97c \uc81c\uac70\ud558\uace0 \uc815\ub82c\ud558\uc5ec \ucd9c\ub825\ud558\ub294 \ud504\ub85c\uadf8\ub7a8\uc744 \uc791\uc131\ud558\uc2dc\uc624.<\/li>\n
- \uc815\ub82c\ub41c \uc218\ub4e4\uc744 \ub0b4\ub9bc\ucc28\uc21c\uc73c\ub85c \ucd9c\ub825\ud558\uc2dc\uc624.<\/li>\n
- \uac01 \uc218\uc758 \ube48\ub3c4 \uc218\ub97c \ud568\uaed8 \ucd9c\ub825\ud558\ub294 \ud504\ub85c\uadf8\ub7a8\uc744 \uc791\uc131\ud558\uc2dc\uc624. (\uac19\uc740 \uc218\uac00 \uba87 \ubc88 \ub4f1\uc7a5\ud558\ub294\uc9c0\ub97c \uc138\uc5b4\uc57c \ud568)<\/li>\n<\/ul>\n
\uc774\uc640 \uac19\uc740 \ucd94\uac00 \uc5f0\uc2b5\uc744 \ud1b5\ud574 \ub354\uc6b1 \uae4a\uc774 \uc788\ub294 \uacbd\ud5d8\uc744 \uc313\uc744 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n<\/article>\n
<\/body><\/p>\n","protected":false},"excerpt":{"rendered":"
- \uc815\ub82c\ub41c \ubca1\ud130\uc758 \ub0b4\uc6a9\uc744 \ucd9c\ub825\ud569\ub2c8\ub2e4.<\/li>\n<\/ol>\n