feat: add swift implementation to lcp problem: No.06 (#3741)

lcp/LCP 06. 拿硬币/README.md

@@ -154,6 +154,20 @@ int minCount(int* coins, int coinsSize) {
 }
 ```
 
+#### Swift
+
+```swift
+class Solution {
+    func minCount(_ coins: [Int]) -> Int {
+        var ans = 0
+        for x in coins {
+            ans += (x + 1) >> 1
+        }
+        return ans
+    }
+}
+```
+
 <!-- tabs:end -->
 
 <!-- solution:end -->

lcp/LCP 06. 拿硬币/Solution.swift

@@ -0,0 +1,9 @@
+class Solution {
+    func minCount(_ coins: [Int]) -> Int {
+        var ans = 0
+        for x in coins {
+            ans += (x + 1) >> 1
+        }
+        return ans
+    }
+}