摘要：
Given a singly linked list where elements are sorted in ascending order, convert it to a height balanced BST. 思路：利用快慢指针找到中间节点，作为根节点，然后左子树即为左边链表部分，右子树即 阅读全文
posted @ 2017-03-26 23:27
hellowOOOrld
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摘要：
We define the Perfect Number is a positive integer that is equal to the sum of all its positive divisors except itself. Now, given an integer n, write 阅读全文
posted @ 2017-03-26 11:16
hellowOOOrld
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Given two strings representing two complex numbers. You need to return a string representing their multiplication. Note i2 = -1 according to the defin 阅读全文
posted @ 2017-03-26 11:13
hellowOOOrld
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