摘要：
https://leetcode.com/problems/text-justification/Given an array of words and a lengthL, format the text such that each line has exactlyLcharacters and... 阅读全文
摘要：
https://leetcode.com/problems/valid-number/Validate if a given string is numeric.Some examples:"0"=>true" 0.1 "=>true"abc"=>false"1 a"=>false"2e10"=>t... 阅读全文