strong

摘要： 1. copy-list-with-random-pointer(拷贝一个带随机指针的链表) A linked list is given such that each node contains an additional random pointer which could point to a 阅读全文

摘要： 1. jump game Given an array of non-negative integers, you are initially positioned at the first index of the array. Each element in the array represen 阅读全文

摘要： 1. sum-root-to-leaf-numbers Given a binary tree containing digits from0-9only, each root-to-leaf path could represent a number. An example is the root 阅读全文

摘要： 1. evaluate-reverse-polish-notation Evaluate the value of an arithmetic expression in Reverse Polish Notation. Valid operators are+,-,*,/. Each operan 阅读全文

摘要： 1. word ladder 题目： Given two words (start and end), and a dictionary, find the length of shortest transformation sequence from start to end, such that 阅读全文

摘要： 1. longest-consecutive-sequence Given an unsorted array of integers, find the length of the longest consecutive elements sequence. For example,Given[1 阅读全文

摘要： 1. palindrome-partitioning Given a string s, partition s such that every substring of the partition is a palindrome. Return all possible palindrome pa 阅读全文

摘要： 1. single-number Given an array of integers, every element appears twice except for one. Find that single one. Note:Your algorithm should have a linea 阅读全文

摘要： 1. permutation-sequence 顺序排列第k个序列 The set[1,2,3,…,n]contains a total of n! unique permutations. By listing and labeling all of the permutations in ord 阅读全文

摘要： 1). two-sum Given an array of integers, find two numbers such that they add up to a specific target number. The function twoSum should return indices 阅读全文