feat: add swift implementation to lcci problem: No.05.07 (doocs#2670)

klever34 · web-flow · commit 6c8f08cab66d · 2024-04-26T16:14:28.000+08:00
diff --git a/lcci/05.07.Exchange/README.md b/lcci/05.07.Exchange/README.md
@@ -81,6 +81,18 @@ impl Solution {
 }
 ```
 
+```swift
+class Solution {
+    func exchangeBits(_ num: Int) -> Int {
+        let oddShifted = (num & 0x55555555) << 1
+
+        let evenShifted = (num & 0xaaaaaaaa) >> 1
+
+        return oddShifted | evenShifted
+    }
+}
+```
+
 <!-- tabs:end -->
 
 <!-- end -->
diff --git a/lcci/05.07.Exchange/README_EN.md b/lcci/05.07.Exchange/README_EN.md
@@ -87,6 +87,18 @@ impl Solution {
 }
 ```
 
+```swift
+class Solution {
+    func exchangeBits(_ num: Int) -> Int {
+        let oddShifted = (num & 0x55555555) << 1
+
+        let evenShifted = (num & 0xaaaaaaaa) >> 1
+
+        return oddShifted | evenShifted
+    }
+}
+```
+
 <!-- tabs:end -->
 
 <!-- end -->
diff --git a/lcci/05.07.Exchange/Solution.swift b/lcci/05.07.Exchange/Solution.swift
@@ -0,0 +1,9 @@
+class Solution {
+    func exchangeBits(_ num: Int) -> Int {
+        let oddShifted = (num & 0x55555555) << 1
+        
+        let evenShifted = (num & 0xaaaaaaaa) >> 1
+        
+        return oddShifted | evenShifted
+    }
+}
