摘要： description: Given a string containing just the characters '(' and ')', find the length of the longest valid (well formed) parentheses substring. 找符合规 阅读全文

摘要： description: Implement next permutation, which rearranges numbers into the lexicographically next greater permutation of numbers. If such arrangement 阅读全文

摘要： description: You are given a string, s, and a list of words, words, that are all of the same length. Find all starting indices of substring(s) in s th 阅读全文

摘要： description: Given two integers dividend and divisor, divide two integers without using multiplication, division and mod operator. Return the quotient 阅读全文

摘要： description: mplement strStr(). Return the index of the first occurrence of needle in haystack, or 1 if needle is not part of haystack. Note: Example: 阅读全文

摘要： description: Given an array nums and a value val, remove all instances of that value in place and return the new length. Do not allocate extra space f 阅读全文

摘要： description: Given n non negative integers a1, a2, ..., an , where each represents a point at coordinate (i, ai). n vertical lines are drawn such that 阅读全文

摘要： description: Given a sorted array nums, remove the duplicates in place such that each element appear only once and return the new length. Do not alloc 阅读全文

摘要： description: Given a linked list, reverse the nodes of a linked list k at a time and return its modified list. k is a positive integer and is less tha 阅读全文

摘要： description: Given a linked list, swap every two adjacent nodes and return its head. You may not modify the values in the list's nodes, only nodes its 阅读全文