[3차] 방금그곡

WEEK03/프로그래머스_[3차] 방금그곡/Raven.swift

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+func solution(_ m:String, _ musicinfos:[String]) -> String {
+    var result = "(None)"
+    var resultPlayTime = 0
+    var resultStartTime = 0
+
+    for info in musicinfos {
+        let info = info.components(separatedBy: ",")
+        let startTime = toInt(info[0])
+        let endTime = toInt(info[1])
+        let playTime = endTime - startTime
+        let musicTitle = info[2]
+        let melody = info[3]
+        var music = ""
+
+        while music.count < playTime {
+            music += toShortString(melody)
+        }
+
+        if music.prefix(playTime).contains(toShortString(m)) {
+            if playTime > resultPlayTime {
+                result = musicTitle
+                resultPlayTime = playTime
+                resultStartTime = startTime
+            } else if playTime == resultPlayTime {
+                if startTime < resultStartTime {
+                    result = musicTitle
+                    resultPlayTime = playTime
+                    resultStartTime = startTime
+                }
+            }
+        }
+    }
+    return result
+}
+
+func toInt(_ timeString: String) -> Int {
+    let components = timeString.components(separatedBy: ":")
+    return (Int(components[0])! * 60) + Int(components[1])!
+}
+
+func toShortString(_ string: String) -> String {
+    return string.replacingOccurrences(of: "C#", with: "c")
+    .replacingOccurrences(of: "D#", with: "d")
+    .replacingOccurrences(of: "F#", with: "f")
+    .replacingOccurrences(of: "G#", with: "g")
+    .replacingOccurrences(of: "A#", with: "a")
+    .replacingOccurrences(of: "B#", with: "C")
+    .replacingOccurrences(of: "E#", with: "F")
+}