摘要：
Write a function to generate the generalized abbreviations of a word. Example: Given word = "word", return the following list (order does not matter): 阅读全文
摘要：
Given a string array words, find the maximum value of length(word[i]) * length(word[j]) where the two words do not share common letters. You may assum 阅读全文
摘要：
Shuffle a set of numbers without duplicates. Example: 阅读全文
摘要：
Given a singly linked list, return a random node's value from the linked list. Each node must have the same probability of being chosen. Follow up: Wh 阅读全文