diff --git a/lcci/10.11.Peaks and Valleys/README.md b/lcci/10.11.Peaks and Valleys/README.md
index 9f3aaf7cfd4eb..2f2e92d8dc930 100644
--- a/lcci/10.11.Peaks and Valleys/README.md	
+++ b/lcci/10.11.Peaks and Valleys/README.md	
@@ -82,6 +82,22 @@ function wiggleSort(nums: number[]): void {
 }
 ```
 
+```swift
+class Solution {
+    func wiggleSort(_ nums: inout [Int]) {
+        nums.sort()
+
+        let n = nums.count
+
+        for i in stride(from: 0, to: n - 1, by: 2) {
+            let temp = nums[i]
+            nums[i] = nums[i + 1]
+            nums[i + 1] = temp
+        }
+    }
+}
+```
+
 <!-- tabs:end -->
 
 <!-- end -->
diff --git a/lcci/10.11.Peaks and Valleys/README_EN.md b/lcci/10.11.Peaks and Valleys/README_EN.md
index 565ea89c2798a..12d7cdf7200c4 100644
--- a/lcci/10.11.Peaks and Valleys/README_EN.md	
+++ b/lcci/10.11.Peaks and Valleys/README_EN.md	
@@ -85,6 +85,22 @@ function wiggleSort(nums: number[]): void {
 }
 ```
 
+```swift
+class Solution {
+    func wiggleSort(_ nums: inout [Int]) {
+        nums.sort()
+
+        let n = nums.count
+
+        for i in stride(from: 0, to: n - 1, by: 2) {
+            let temp = nums[i]
+            nums[i] = nums[i + 1]
+            nums[i + 1] = temp
+        }
+    }
+}
+```
+
 <!-- tabs:end -->
 
 <!-- end -->
diff --git a/lcci/10.11.Peaks and Valleys/Solution.swift b/lcci/10.11.Peaks and Valleys/Solution.swift
new file mode 100644
index 0000000000000..96fea24928059
--- /dev/null
+++ b/lcci/10.11.Peaks and Valleys/Solution.swift	
@@ -0,0 +1,13 @@
+class Solution {
+    func wiggleSort(_ nums: inout [Int]) {
+        nums.sort()
+        
+        let n = nums.count
+        
+        for i in stride(from: 0, to: n - 1, by: 2) {
+            let temp = nums[i]
+            nums[i] = nums[i + 1]
+            nums[i + 1] = temp
+        }
+    }
+}
\ No newline at end of file