Merge pull request #236 from moongilj/fix-239

Fix typo and update syntax in SlidingWindowMaximum

Author: soapyigu

Array/SlidingWindowMaximum.swift

@@ -8,7 +8,7 @@
  */
 
 class SlidingWindowMaximum {
-    func maxSlidingWindow(nums: [Int], _ k: Int) -> [Int] {
+    func maxSlidingWindow(_ nums: [Int], _ k: Int) -> [Int] {
         var maxIdx = [Int]()
         var res = [Int]()
 
@@ -20,14 +20,14 @@ class SlidingWindowMaximum {
             maxIdx.append(i)
 
             if i >= k - 1 {
-                if decreaseIndexQueue.first! + k == i {
-                    decreaseIndexQueue.removeFirst()
+                if maxIdx.first! + k == i {
+                    maxIdx.removeFirst()
                 } 
 
-                res.append(nums[decreaseIndexQueue.first!])
+                res.append(nums[maxIdx.first!])
             }
         }
 
         return res
     }
-}
+}