摘要： Given an unsorted array nums, reorder it in-place such that nums[0] <= nums[1] >= nums[2] <= nums[3].... Notice Please complete the problem in-place. 阅读全文

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

摘要： Given a non-overlapping interval list which is sorted by start point. Insert a new interval into it, make sure the list is still in order and non-over 阅读全文