使用 Minio 服务，并且使用 ngxin 进行代理，生成的 URL 无法访问，报错 SignatureDoesNotMatch继续阅读
Given a string s and a non-empty string p, find all the start indices of p’s anagrams in s.继续阅读
You are given a binary tree in which each node contains an integer value.
Find the number of paths that sum to a given value.继续阅读
Given a set of intervals, for each of the interval i, check if there exists an interval j whose start point is bigger than or equal to the end point of the interval i, which can be called that j is on the “right” of i.继续阅读
Given a collection of intervals, find the minimum number of intervals you need to remove to make the rest of the intervals non-overlapping.继续阅读
A gene string can be represented by an 8-character long string, with choices from “A”, “C”, “G”, “T”.
Suppose we need to investigate about a mutation (mutation from “start” to “end”), where ONE mutation is defined as ONE single character changed in the gene string.继续阅读
Inc(Key) – Inserts a new key with value 1. Or increments an existing key by 1. Key is guaranteed to be a non-empty string.
Dec(Key) – If Key’s value is 1, remove it from the data structure. Otherwise decrements an existing key by 1. If the key does not exist, this function does nothing. Key is guaranteed to be a non-empty string.
GetMaxKey() – Returns one of the keys with maximal value. If no element exists, return an empty string “”.