diff --git a/lcci/17.19.Missing Two/README.md b/lcci/17.19.Missing Two/README.md
index 64ae1460d273d..307770e9a3b31 100644
--- a/lcci/17.19.Missing Two/README.md	
+++ b/lcci/17.19.Missing Two/README.md	
@@ -142,6 +142,42 @@ func missingTwo(nums []int) []int {
 }
 ```
 
+```swift
+class Solution {
+    func missingTwo(_ nums: [Int]) -> [Int] {
+        let n = nums.count + 2
+        var xor = 0
+        
+        for num in nums {
+            xor ^= num
+        }
+        
+        for i in 1...n {
+            xor ^= i
+        }
+        
+        let diff = xor & (-xor)
+        
+        var a = 0
+        
+        for num in nums {
+            if (num & diff) != 0 {
+                a ^= num
+            }
+        }
+        
+        for i in 1...n {
+            if (i & diff) != 0 {
+                a ^= i
+            }
+        }
+        
+        let b = xor ^ a
+        return [a, b]
+    }
+}
+```
+
 <!-- tabs:end -->
 
 <!-- end -->
diff --git a/lcci/17.19.Missing Two/README_EN.md b/lcci/17.19.Missing Two/README_EN.md
index 31be29535a171..57839d0d5b15c 100644
--- a/lcci/17.19.Missing Two/README_EN.md	
+++ b/lcci/17.19.Missing Two/README_EN.md	
@@ -135,6 +135,42 @@ func missingTwo(nums []int) []int {
 }
 ```
 
+```swift
+class Solution {
+    func missingTwo(_ nums: [Int]) -> [Int] {
+        let n = nums.count + 2
+        var xor = 0
+        
+        for num in nums {
+            xor ^= num
+        }
+        
+        for i in 1...n {
+            xor ^= i
+        }
+        
+        let diff = xor & (-xor)
+        
+        var a = 0
+        
+        for num in nums {
+            if (num & diff) != 0 {
+                a ^= num
+            }
+        }
+        
+        for i in 1...n {
+            if (i & diff) != 0 {
+                a ^= i
+            }
+        }
+        
+        let b = xor ^ a
+        return [a, b]
+    }
+}
+```
+
 <!-- tabs:end -->
 
 <!-- end -->
diff --git a/lcci/17.19.Missing Two/Solution.swift b/lcci/17.19.Missing Two/Solution.swift
new file mode 100644
index 0000000000000..dc8e26c9e7b82
--- /dev/null
+++ b/lcci/17.19.Missing Two/Solution.swift	
@@ -0,0 +1,33 @@
+class Solution {
+    func missingTwo(_ nums: [Int]) -> [Int] {
+        let n = nums.count + 2
+        var xor = 0
+        
+        for num in nums {
+            xor ^= num
+        }
+        
+        for i in 1...n {
+            xor ^= i
+        }
+        
+        let diff = xor & (-xor)
+        
+        var a = 0
+        
+        for num in nums {
+            if (num & diff) != 0 {
+                a ^= num
+            }
+        }
+        
+        for i in 1...n {
+            if (i & diff) != 0 {
+                a ^= i
+            }
+        }
+        
+        let b = xor ^ a
+        return [a, b]
+    }
+}
\ No newline at end of file