摘要：
Given two binary strings, return their sum (also a binary string). For example,a ="11"b ="1"Return"100". 题意：将两个以字符串形式保存的二进制数进行相加。 思路：其实不管是以数组、字符串形式，加或 阅读全文
摘要：
Validate if a given string is numeric. Some examples:"0"=>true" 0.1 "=>true"abc"=>false"1 a"=>false"2e10"=>true Note: It is intended for the problem s 阅读全文
摘要：
Given an array of words and a length L, format the text such that each line has exactly L characters and is fully (left and right) justified. You shou 阅读全文
摘要：
Given an absolute path for a file (Unix-style), simplify it. For example,path ="/home/", =>"/home"path ="/a/./b/../../c/", =>"/c" click to show corner 阅读全文