From 5640128430938a29ab4603268b5d018817f8f6bb Mon Sep 17 00:00:00 2001 From: Anton Dryakhlykh Date: Sat, 23 Nov 2024 11:40:04 +0300 Subject: [PATCH] Create 2013-detect-squares.swift --- swift/2013-detect-squares.swift | 35 +++++++++++++++++++++++++++++++++ 1 file changed, 35 insertions(+) create mode 100644 swift/2013-detect-squares.swift diff --git a/swift/2013-detect-squares.swift b/swift/2013-detect-squares.swift new file mode 100644 index 000000000..09c58c0ff --- /dev/null +++ b/swift/2013-detect-squares.swift @@ -0,0 +1,35 @@ + +class DetectSquares { + + var pts = [[Int]]() + var ptsCount = [[Int]: Int]() + + init() { + + } + + func add(_ point: [Int]) { + ptsCount[point, default: 0] += 1 + pts.append(point) + } + + func count(_ point: [Int]) -> Int { + var res = 0 + var x = point[0], y = point[1] + for val in pts { + let px = val[0], py = val[1] + if abs(py - y) != abs(px - x) || x == px || y == py { + continue + } + res += ptsCount[[x, py], default: 0] * ptsCount[[px, y], default: 0] + } + return res + } +} + +/** + * Your DetectSquares object will be instantiated and called as such: + * let obj = DetectSquares() + * obj.add(point) + * let ret_2: Int = obj.count(point) + */ \ No newline at end of file pFad - Phonifier reborn

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