为数组篇 增加 Swift 实现

animation-simulation/数组篇/leetcode27移除元素.md

@@ -164,3 +164,23 @@ public:
 };
 ```
 
+Swift Code
+
+```swift
+class Solution {
+    func removeElement(_ nums: inout [Int], _ val: Int) -> Int {
+        if nums.count == 0 {
+            return 0
+        }
+        var i = 0
+        for j in 0..<nums.count {
+            if nums[j] != val {
+                nums[i] = nums[j]
+                i += 1
+            }
+            
+        }
+        return i
+    }
+}
+```