小刀初试

摘要： Scalable Web Architecture and Distributed System 阅读全文

摘要： 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

摘要： Given a string s and a dictionary of words dict, determine if s can be segmented into a space-separated sequence of one or more dictionary words. For ... 阅读全文

摘要： 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： Given an array of integers, every element appears three times except for one. Find that single one. Note:Your algorithm should have a linear runtime... 阅读全文

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

摘要： 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 re... 阅读全文

摘要： 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 costs... 阅读全文

摘要： Give a string, which only contains a-z. List all the permutation of upcase and lowcase. For example, str = "ab", the output should be "ab", "aB", "Ab... 阅读全文

摘要： Give a string, which only contains a-z. List all the permutation of upcase and lowcase.For example, str = "ab", the output should be"ab", "aB", "Ab",... 阅读全文