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摘要： leetcode -Single Number IIGiven an array of integers, every element appearsthreetimes except for one. Find that single one.Note:Your algorithm should ... 阅读全文

摘要： leetcode -Single NumberGiven an array of integers, every element appearstwiceexcept for one. Find that single one.Note:Your algorithm should have a li... 阅读全文

摘要： Given a non-negative integernum, repeatedly add all its digits until the result has only one digit.For example:Givennum = 38, the process is like:3 + ... 阅读全文

摘要： leetcode - Valid ParenthesesGiven a string containing just the characters'(',')','{','}','['and']', determine if the input string is valid.The bracket... 阅读全文

摘要： leetcode -Longest Palindromic SubstringGiven a stringS, find the longest palindromic substring inS. You may assume that the maximum length ofSis 1000,... 阅读全文

摘要： leetcode - String to Integer (atoi)Implementatoito convert a string to an integer.Hint:Carefully consider all possible input cases. If you want a chal... 阅读全文

摘要： leetcode -Reverse Words in a StringGiven an input string, reverse the string word by word.For example,Given s = "the sky is blue",return "blue is sky ... 阅读全文

摘要： leetcode -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... 阅读全文

摘要： leetcode -Flatten Binary Tree to Linked ListGiven a binary tree, flatten it to a linked list in-place.For example,Given 1 / \ 2 ... 阅读全文

摘要： leetcode -Linked List CycleGiven a linked list, determine if it has a cycle in it.Follow up:Can you solve it without using extra space?/** * Definitio... 阅读全文