iphkwan / leetcode Goto Github PK
View Code? Open in Web Editor NEWNo voice but big deal.
No voice but big deal.
What is "constant extra space"? Does recursion use constant extra space?
I know in each recursion, your program uses constant extra space only. But the times of recursion is dependent on the level of the tree, can we still say the program uses constant extra space?
So, what is "constant extra space"?
Is your solution in O(n) complexity? Doesn't inserting n values into a set cost nlog(n) time?
What if the candidates is [1, 1] and target is 1? Will duplicate results be returned?
我做了一个 iOS 下的 LeetCode 客户端,想把你的题解放在应用里,可以吗?
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