cha1992

摘要： Jump Game IIGiven an array of non-negative integers, you are initially positioned at the first index of the array.Each element in the array represents... 阅读全文

摘要： Reverse Nodes in k-GroupGiven a linked list, reverse the nodes of a linked listkat a time and return its modified list.If the number of nodes is not a... 阅读全文

摘要： Distinct SubsequencesGiven a stringSand a stringT, count the number of distinct subsequences ofTinS.A subsequence of a string is a new string which is... 阅读全文

摘要： Count and SayThe count-and-say sequence is the sequence of integers beginning as follows:1, 11, 21, 1211, 111221, ...1is read off as"one 1"or11.11is r... 阅读全文

摘要： Edit DistanceGiven two wordsword1andword2, find the minimum number of steps required to convertword1toword2. (each operation is counted as 1 step.)You... 阅读全文

摘要： Gas StationThere areNgas stations along a circular route, where the amount of gas at stationiisgas[i].You have a car with an unlimited gas tank and it... 阅读全文

摘要： Palindrome PartitioningGiven a strings, partitionssuch that every substring of the partition is a palindrome.Return all possible palindrome partitioni... 阅读全文

摘要： Factorial Trailing ZeroesGiven an integern, return the number of trailing zeroes inn!.Note:Your solution should be in logarithmic time complexity.思路：不... 阅读全文

摘要： Binary Search Tree IteratorImplement an iterator over a binary search tree (BST). Your iterator will be initialized with the root node of a BST.Callin... 阅读全文

摘要： Reverse Linked List IIReverse a linked list from positionmton. Do it in-place and in one-pass.For example:Given1->2->3->4->5->NULL,m= 2 andn= 4,return... 阅读全文