摘要：
Given a matrix ofmxnelements (mrows,ncolumns), return all elements of the matrix in spiral order.For example,Given the following matrix:[ [ 1, 2, 3 ],... 阅读全文
摘要：
Given an array of strings, return all groups of strings that are anagrams.Note: All inputs will be in lower-case.1.概念，首先简单介绍一下Anagram（回文构词法）。Anagrams是... 阅读全文
摘要：
Given an integern, generate a square matrix filled with elements from 1 ton2in spiral order.For example,Givenn=3,You should return the following matri... 阅读全文