배수빈: [PG] 250135 아날로그 시계_241206

Author: baexxbin

Programmers/Level2/SB_250135.java

@@ -0,0 +1,60 @@
+class SB_250135 {
+    private static boolean overlapHour(Time cur, Time nxt) {
+        if(cur.dh > cur.ds && nxt.dh <=nxt.ds) return true;
+        return cur.ds == 354 && cur.dh > 354;
+    }
+    private static boolean overlapMin(Time cur, Time nxt) {
+        if(cur.dm > cur.ds && nxt.dm <=nxt.ds) return true;
+        return cur.ds == 354 && cur.dm > 354;               // 초침이 정각으로 갈때 0도 처리
+    }
+    public static int solution(int h1, int m1, int s1, int h2, int m2, int s2) {
+        int startTime = new Time(h1, m1, s1).getSecond();
+        int endTime = new Time(h2, m2, s2).getSecond();
+
+        int cnt = 0;
+        for (int i = startTime; i < endTime; i++) {
+            Time cur = new Time(i);
+            Time nxt = new Time(i + 1);
+
+            boolean isMinRing = overlapMin(cur, nxt);
+            boolean isHourRing = overlapHour(cur, nxt);
+
+            if (isMinRing && isHourRing){       // 시침 분침 모두 겹쳤을때
+                if (nxt.dh== nxt.dm) cnt++;     // 시침분침의 위치가 같으면 한번만 카운트
+                else cnt+=2;
+            } else if (isMinRing || isHourRing) cnt++;
+        }
+        if (startTime==0 || startTime==43200) cnt++;    // 예외처리: 처음에 시분초 모두 같이 있을 경우(정오, 정각)
+        return cnt;
+    }
+
+    static class Time{
+        int h, m, s;
+        double dh, dm, ds;
+
+        public Time(int h, int m, int s) {
+            this.h = h;
+            this.m = m;
+            this.s = s;
+            setDegrees();
+        }
+
+        public Time(int s) {
+            this.h = s / 3600;
+            this.m = (s % 3600) / 60;
+            this.s = (s % 3600) % 60;
+            setDegrees();
+        }
+
+
+        private int getSecond() {
+            return h * 3600 + m * 60 + s;
+        }
+
+        private void setDegrees() {
+            this.dh = (h % 12) * 30d + m * 0.5 + s * (0.5 / 60);
+            this.dm = m * 6 + s * 0.1;
+            this.ds = s * 6;
+        }
+    }
+}