摘要：
Given an array of strings, return all groups of strings that are anagrams. Note: All inputs will be in lower-case. 题解： 判断字符串是否为回文构词法生成的。找出所有由同一回文构词法生成 阅读全文
摘要：
The count-and-say sequence is the sequence of integers beginning as follows:1, 11, 21, 1211, 111221, ... 1 is read off as "one 1" or 11.11 is read off 阅读全文