题目来源 https://leetcode.com/problems/excel-sheet-column-title/ Given a positive integer, return its corresponding column title as appear in an Excel sheet. For example: 1 -> A 2 -> B 3 -> C ... 26 -> Z 27 -> AA 28 -> AB 题意分析 Input:a number
Given a column title as appear in an Excel sheet, return its corresponding column number. For example: A -> 1 B -> 2 C -> 3 ... Z -> 26 AA -> 27 AB -> 28 ... Example 1: Input: "A" Output: 1 Example 2: Input: "AB" Outp
#-*- coding: UTF-8 -*- # ord(c) -> integer##Return the integer ordinal of a one-character string.##参数是一个ascii字符,返回值是对应的十进制整数class Solution(object): def titleToNumber(self, s): columns=0 n=len(s) s=s.upper()[::-1] for c
import shutil import time import pymysql conn=pymysql.connect(host="222",user="root",password="",db="www",charset="utf8") cu=conn.cursor() cu.execute("select xm,wxpic,bh from eyh_yas where hid=769&quo
1.来源: Python Regular Expressions Cheat Sheet 2.内容: Special Characters ^ | Matches the expression to its right at the start of a string. It matches every such instance before each \n in the string. $ | Matches the expression to its left at the end of
选择.循环与函数结构:MATLAB VS Python 整理基本的程序控制结构,主要是选择 和 循环. 1.MATLAB选择结构 (1)单分支if语句格式: if 条件 语句组 end (2)双分支if语句格式(常用): if 条件 语句组 else 语句组 end eg. if x== 10 y = cos(x+1) else y = x*sqrt(x+sqrt(x)) end (3)多分支if语句格式: if 条件1 语句组1 elseif 条件2 语句组2 ...... elseif 条件
