From eddb4c1a5558b94484d616eb85add77759ee71b0 Mon Sep 17 00:00:00 2001
From: Matej Focko <mfocko@redhat.com>
Date: Wed, 13 Dec 2023 18:06:57 +0100
Subject: [PATCH] =?UTF-8?q?problems(swift):=20add=20=E2=80=9C1582.=20Speci?=
 =?UTF-8?q?al=20Positions=20in=20a=20Binary=20Matrix=E2=80=9D?=
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Signed-off-by: Matej Focko <mfocko@redhat.com>
---
 ...special-positions-in-a-binary-matrix.swift | 25 +++++++++++++++++++
 1 file changed, 25 insertions(+)
 create mode 100644 swift/special-positions-in-a-binary-matrix.swift

diff --git a/swift/special-positions-in-a-binary-matrix.swift b/swift/special-positions-in-a-binary-matrix.swift
new file mode 100644
index 0000000..a8f8a32
--- /dev/null
+++ b/swift/special-positions-in-a-binary-matrix.swift
@@ -0,0 +1,25 @@
+class Solution {
+    func numSpecial(_ mat: [[Int]]) -> Int {
+        let m = mat.count
+        let n = mat[0].count
+
+        var rows: [Int] = Array(repeating: 0, count: m)
+        var cols: [Int] = Array(repeating: 0, count: n)
+
+        for (y, x) in (0..<m).flatMap { y in (0..<n).map {x in (y, x) } } {
+            if mat[y][x] == 1 {
+                rows[y] += 1
+                cols[x] += 1
+            }
+        }
+
+        var count = 0
+        for (y, x) in (0..<m).flatMap { y in (0..<n).map {x in (y, x) } } {
+            if mat[y][x] == 1 && rows[y] == 1 && cols[x] == 1 {
+                count += 1
+            }
+        }
+
+        return count
+    }
+}