From cd8296652471ea40e0e547430f596c19ec6e5fe7 Mon Sep 17 00:00:00 2001
From: Lanre Adedara <lanre.adedara@shara.co>
Date: Thu, 23 May 2024 09:31:58 +0100
Subject: [PATCH] feat: add swift implementation to lcof problem: No.27 (#2894)

---
 .../README.md"                                | 30 +++++++++++++++++++
 .../Solution.swift"                           | 25 ++++++++++++++++
 2 files changed, 55 insertions(+)
 create mode 100644 "lcof/\351\235\242\350\257\225\351\242\23027. \344\272\214\345\217\211\346\240\221\347\232\204\351\225\234\345\203\217/Solution.swift"

diff --git "a/lcof/\351\235\242\350\257\225\351\242\23027. \344\272\214\345\217\211\346\240\221\347\232\204\351\225\234\345\203\217/README.md" "b/lcof/\351\235\242\350\257\225\351\242\23027. \344\272\214\345\217\211\346\240\221\347\232\204\351\225\234\345\203\217/README.md"
index 31a1c1b43602..90c697d3bad0 100644
--- "a/lcof/\351\235\242\350\257\225\351\242\23027. \344\272\214\345\217\211\346\240\221\347\232\204\351\225\234\345\203\217/README.md"	
+++ "b/lcof/\351\235\242\350\257\225\351\242\23027. \344\272\214\345\217\211\346\240\221\347\232\204\351\225\234\345\203\217/README.md"	
@@ -281,6 +281,36 @@ public class Solution {
 }
 ```
 
+#### Swift
+
+```swift
+/* public class TreeNode {
+*     var val: Int
+*     var left: TreeNode?
+*     var right: TreeNode?
+*     init(_ val: Int) {
+*         self.val = val
+*         self.left = nil
+*         self.right = nil
+*     }
+* }
+*/
+
+class Solution {
+    func mirrorTree(_ root: TreeNode?) -> TreeNode? {
+        guard let root = root else {
+            return nil
+        }
+        let temp = root.left
+        root.left = root.right
+        root.right = temp
+        _ = mirrorTree(root.left)
+        _ = mirrorTree(root.right)
+        return root
+    }
+}
+```
+
 <!-- tabs:end -->
 
 <!-- solution:end -->
diff --git "a/lcof/\351\235\242\350\257\225\351\242\23027. \344\272\214\345\217\211\346\240\221\347\232\204\351\225\234\345\203\217/Solution.swift" "b/lcof/\351\235\242\350\257\225\351\242\23027. \344\272\214\345\217\211\346\240\221\347\232\204\351\225\234\345\203\217/Solution.swift"
new file mode 100644
index 000000000000..34a382175ac8
--- /dev/null
+++ "b/lcof/\351\235\242\350\257\225\351\242\23027. \344\272\214\345\217\211\346\240\221\347\232\204\351\225\234\345\203\217/Solution.swift"	
@@ -0,0 +1,25 @@
+/* public class TreeNode {
+*     var val: Int
+*     var left: TreeNode?
+*     var right: TreeNode?
+*     init(_ val: Int) {
+*         self.val = val
+*         self.left = nil
+*         self.right = nil
+*     }
+* }
+*/
+
+class Solution {
+    func mirrorTree(_ root: TreeNode?) -> TreeNode? {
+        guard let root = root else {
+            return nil
+        }
+        let temp = root.left
+        root.left = root.right
+        root.right = temp
+        _ = mirrorTree(root.left)
+        _ = mirrorTree(root.right)
+        return root
+    }
+}
\ No newline at end of file