Time: 3 ms (40.61%), Space: 20.3 MB (15.78%) - LeetHub

Author: woolnd

0001-two-sum/0001-two-sum.swift

@@ -0,0 +1,16 @@
+class Solution {
+    func twoSum(_ nums: [Int], _ target: Int) -> [Int] {
+        var dict = [Int: Int]()
+    
+        for (index, num) in nums.enumerated() {
+            let complement = target - num
+        
+            if let complementIndex = dict[complement] {
+                return [complementIndex, index]
+            }
+        
+            dict[num] = index
+        }
+        return []
+    }
+}