Update Subsets.swift

soapyigu · web-flow · commit 47efdd109f2c · 2019-08-13T18:01:53.000-07:00
diff --git a/DFS/Subsets.swift b/DFS/Subsets.swift
@@ -21,12 +21,12 @@ class Subsets {
     private func _dfs(inout res: [[Int]], inout _ path: [Int], _ nums: [Int], _ index: Int) {
         // termination case
 
-        res.append(Array(path))
+        res.append(path)
         
         for i in index..<nums.count {
             path.append(nums[i])
             _dfs(&res, &path, nums, i + 1)
             path.removeLast()
         }
     }
-}
+}

Original file line number	Diff line number	Diff line change
`@@ -21,12 +21,12 @@ class Subsets {`
`21`	`21`	`private func _dfs(inout res: [[Int]], inout _ path: [Int], _ nums: [Int], _ index: Int) {`
`22`	`22`	`// termination case`
`23`	`23`
`24`		`- res.append(Array(path))`
	`24`	`+ res.append(path)`
`25`	`25`
`26`	`26`	`for i in index..<nums.count {`
`27`	`27`	`path.append(nums[i])`
`28`	`28`	`_dfs(&res, &path, nums, i + 1)`
`29`	`29`	`path.removeLast()`
`30`	`30`	`}`
`31`	`31`	`}`
`32`		`-}`
	`32`	`+}`