摘要：
Design a data structure that supports all following operations in average O(1) time. insert(val): Inserts an item val to the set if not already presen 阅读全文
posted @ 2019-11-15 12:24
Schwifty
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摘要：
Given a n x n matrix where each of the rows and columns are sorted in ascending order, find the kth smallest element in the matrix. Note that it is th 阅读全文
posted @ 2019-11-15 11:03
Schwifty
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摘要：
Given a nested list of integers, implement an iterator to flatten it. Each element is either an integer, or a list -- whose elements may also be integ 阅读全文
posted @ 2019-11-15 10:18
Schwifty
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