주사위 굴리기 / 경사로

WEEK12/백준_14499_주사위굴리기/liv.swift

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+// 백준 - 14499 주사위 굴리기
+
+let line = readLine()!.split(separator: " ").compactMap { Int($0) }
+let n = line[0]; let m = line[1]; let x = line[2]; let y = line[3]
+
+var map = [[Int]]()
+for _ in 1...n { map.append(readLine()!.split(separator: " ").compactMap { Int($0) }) }
+
+let orders = readLine()!.split(separator: " ").compactMap { Int($0) }
+let directions = [(0, 1), (0, -1), (-1, 0), (1,0)]
+
+var dice = [Int](repeating: 0, count: 6)
+var coord: (r: Int, c: Int) = (x, y)
+var result = [String]()
+
+for order in orders {
+    // 지도 다음 칸 찾기
+    let direction = directions[order-1]
+    let next: (r: Int, c: Int) = (coord.r+direction.0, coord.c+direction.1)
+
+    // 다음 칸의 숫자 확인
+    guard next.r >= 0 && next.r < n && next.c >= 0 && next.c < m else { continue }
+    coord = next
+
+    // 주사위 굴리기
+    roll(order)
+
+    if map[coord.r][coord.c] == 0 {
+        map[coord.r][coord.c] = dice[5]
+    } else {
+        dice[5] = map[coord.r][coord.c]
+        map[coord.r][coord.c] = 0
+    }
+
+    result.append(String(dice[0]))
+}
+
+print(result.joined(separator: "\n"))
+
+func roll(_ order: Int) {
+    let temp = dice
+
+    switch order {
+    case 1:
+        dice[0] = temp[3]
+        dice[2] = temp[0]
+        dice[5] = temp[2]
+        dice[3] = temp[5]
+
+    case 2:
+        dice[0] = temp[2]
+        dice[3] = temp[0]
+        dice[5] = temp[3]
+        dice[2] = temp[5]
+
+    case 3:
+        dice[0] = temp[4]
+        dice[1] = temp[0]
+        dice[5] = temp[1]
+        dice[4] = temp[5]
+
+    case 4:
+        dice[0] = temp[1]
+        dice[4] = temp[0]
+        dice[5] = temp[4]
+        dice[1] = temp[5]
+
+    default:
+        break
+    }
+}

WEEK12/백준_14890_경사로/liv.swift

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+// 백준 - 14890 경사로
+
+let nl = readLine()!.split(separator: " ").compactMap { Int($0) }
+let n = nl[0]; let l = nl[1]
+var map = [[Int]]()
+for _ in 0..<n {
+    map.append(readLine()!.split(separator: " ").compactMap { Int($0) })
+}
+
+var count = 0
+for i in 0..<n {
+    if check(map[i]) { count += 1 }
+
+    var column = [Int]()
+    for row in map { column.append(row[i]) }
+    if check(column) { count += 1 }
+}
+
+print(count)
+
+func check(_ line: [Int]) -> Bool {
+    var used = [Bool](repeating: false, count: n)
+
+    for i in 0..<n-1 {
+        let diff = line[i+1] - line[i]
+
+        if diff == 0 { continue }
+
+        else if diff == 1 {
+            let start = i - l + 1
+            if start < 0 { return false }
+            for j in start...i {
+                if used[j] { return false }
+                if line[j] != line[i] { return false }
+                used[j] = true
+            }
+        }
+
+        else if diff == -1 {
+            let end = i + l
+            if end >= n { return false }
+            for j in i+1...end {
+                if used[j] { return false }
+                if line[j] != line[i+1] { return false }
+                used[j] = true
+            }
+        }
+
+        else { return false }
+    }
+    return true
+}