[Linked List] Add a solution to Convert Sorted List to Binary Search … #270
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please check this PR. |
xieweiAlex
approved these changes
Nov 4, 2019
| while cur != nil { | ||
| sortedArr.append(cur!.val) | ||
| cur = cur!.next | ||
| } |
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Do you think you can do something like this below, so you don't have to implicitly unwrap the variable which is not recommended in production code?
while let newCurr = cur {
sortedArr.append(newCurr.val)
cur = newCurr.next
}
| private func _helper(_ sortedArr: [Int], _ left: Int, _ right: Int) -> TreeNode? { | ||
| guard left <= right else { return nil } | ||
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| let mid = left + (right - left) >> 1 |
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the >> operation is so cool! 👍
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Add a solution to Convert Sorted List to Binary Search Tree