From 6b77a25cf8c4ab74820811cc0bc57751e39535bd Mon Sep 17 00:00:00 2001 From: suyeun84 <81475092+suyeun84@users.noreply.github.com> Date: Tue, 23 Sep 2025 17:39:09 +0900 Subject: [PATCH] =?UTF-8?q?[20250923]=20PGM=20/=20LV3=20/=20=ED=92=8D?= =?UTF-8?q?=EC=84=A0=20=ED=84=B0=ED=8A=B8=EB=A6=AC=EA=B8=B0=20/=20?= =?UTF-8?q?=EA=B9=80=EC=88=98=EC=97=B0?= MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit --- ...60\355\212\270\353\246\254\352\270\260.md" | 30 +++++++++++++++++++ 1 file changed, 30 insertions(+) create mode 100644 "suyeun84/202509/23 PGM LV3 \355\222\215\354\204\240 \355\204\260\355\212\270\353\246\254\352\270\260.md" diff --git "a/suyeun84/202509/23 PGM LV3 \355\222\215\354\204\240 \355\204\260\355\212\270\353\246\254\352\270\260.md" "b/suyeun84/202509/23 PGM LV3 \355\222\215\354\204\240 \355\204\260\355\212\270\353\246\254\352\270\260.md" new file mode 100644 index 00000000..db9dfe13 --- /dev/null +++ "b/suyeun84/202509/23 PGM LV3 \355\222\215\354\204\240 \355\204\260\355\212\270\353\246\254\352\270\260.md" @@ -0,0 +1,30 @@ +```java +import java.util.*; +class Solution { + public int solution(int[] a) { + int answer = 0; + int n = a.length; + if (n == 1) return 1; + int[] left = new int[n]; + int[] right = new int[n]; + + left[0] = a[0]; + for (int i = 1; i < n; i++) { + left[i] = Math.min(left[i - 1], a[i]); + } + + right[n - 1] = a[n - 1]; + for (int i = n - 2; i >= 0; i--) { + right[i] = Math.min(right[i + 1], a[i]); + } + for (int i = 0; i < n; i++) { + if (i == 0 || i == n-1) answer++; + else { + if (left[i-1] < a[i] && right[i+1] < a[i]) continue; + answer++; + } + } + return answer; + } +} +```