摘要： The string "PAYPALISHIRING" is written in a zigzag pattern on a given number of rows like this: (you may want to display this pattern in a fixed font 阅读全文

摘要： Given two binary strings, return their sum (also a binary string). For example,a = "11"b = "1"Return "100". 我的思路是： 1，先将两个string的长度设置为一样大小，小的进行左边补零。 2， 阅读全文