摘要:
Reverse digits of an integer. Example1: x = 123, return 321Example2: x = -123, return -321 题意:反转数字 注意溢出 这是在LeetCode做的最简单的一个题了 阅读全文
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