摘要：
题目：There are N gas stations along a circular route, where the amount of gas at station i is gas[i].You have a car with an unlimited gas tank and it co... 阅读全文
摘要：
题目：There are N children standing in a line. Each child is assigned a rating value.You are giving candies to these children subjected to the following ... 阅读全文
摘要：
题目：Given an array of integers, every element appears three times except for one. Find that single one.Note: Your algorithm should have a linear runtim... 阅读全文
摘要：
题目：Given an array of integers, every element appears twice except for one. Find that single one.Note: Your algorithm should have a linear runtime comp... 阅读全文
摘要：
题目：A linked list is given such that each node contains an additional random pointer which could point to any node in the list or null.Return a deep co... 阅读全文
摘要：
题目：Given a string s and a dictionary of words dict, add spaces in s to construct a sentence where each word is a valid dictionary word.Return all such... 阅读全文