🟢 Solve problem 350

Author: AF2B

swift/350.swift

@@ -0,0 +1,19 @@
+class Solution {
+    func intersect(_ nums1: [Int], _ nums2: [Int]) -> [Int] {
+        var countMap = [Int: Int]()
+        var intersection = [Int]()
+
+        for value1 in nums1 {
+            countMap[value1, default: 0] += 1
+        }
+
+        for value2 in nums2 {
+            if let count = countMap[value2], count > 0 {
+                intersection.append(value2)
+                countMap[value2] = count - 1
+            }
+        }
+
+        return intersection
+    }
+}