Given a binary tree, flatten it to a linked list in-place. For example,Given 1 / \ 2 5 / \ \ 3 4 6 &nbs…

  Given a list of words and two words word1 and word2, return the shortest distance betwee…

题目： Given an array of non-negative integers, you are initially positioned at the first index of the array. Eac…

Repeated DNA Sequences All DNA is composed of a series of nucleotides abbreviated as A, C, G, and T, for examp…

1. 题目 Given s1, s2, s3, find whether s3 is formed by the interleaving of s1 and s2. For example,Given:s1 = …

57. Insert Interval 题目 Given a set of non-overlapping intervals, insert a new interval into the intervals (mer…

39. Combination Sum 题目 Given a set of candidate numbers (C) (without duplicates) and a target number (T), find…

  Given preorder and inorder traversal of a tree, construct the binary tree. Note:You may assume that dup…

  We partition a row of numbers A into at most K adjacent (non-empty) groups, then ou…

题目： The count-and-say sequence is the sequence of integers beginning as follows:1, 11, 21, 1211, 111221, ... 1…

题目： Given a 2D board containing 'X' and 'O', capture all regions surrounded by 'X'. A regi…

Data Stream Median 最新更新：https://yanjia.me/zh/2019/02/… Median is the middle value in an ordered integer …