摘要：
Numbers can be regarded as product of its factors. For example, 8 = 2 x 2 x 2; = 2 x 4. Write a function that takes an integer n and return all possib 阅读全文
摘要：
This is a follow up of Shortest Word Distance. The only difference is now word1 could be the same as word2. Given a list of words and two words word1 阅读全文
摘要：
This is a follow up of Shortest Word Distance. The only difference is now you are given the list of words and your method will be called repeatedly ma 阅读全文