背景: 最近在看一些Python爬虫的相关知识,讲爬取的一些数据写入到Excel表中,当时当列的数目不确定的情况下,如何通过遍历的方式讲爬取的数据写入到Excel中. 开发环境: Python 3 openpyxl 解决方案:Excel列名其实就是一个26进制的数,我们只需要实现26进制和10进制之间的转换就行列 代码: def colname_to_num(colname): if type(colname) is not str: return colname col = 0 power
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 26进制的实现. 没什么难点.就是需要需要注意是 n = (n-1)/26 public class Solution { public String conv
给定一个Excel表格中的列名称,返回其相应的列序号.示例: A -> 1 B -> 2 C -> 3 ... Z -> 26 AA -> 27 AB -> 28 详见:https://leetcode.com/problems/excel-sheet-column-number/description/ Java实现: class Solution { public int titleToNumber(String s) {
Balala Power![排序/进制思维] Time Limit: 4000/2000 MS (Java/Others) Memory Limit: 131072/131072 K (Java/Others)Total Submission(s): 6703 Accepted Submission(s): 1680 Problem Description Talented Mr.Tang has n strings consisting of only lower case cha
参考:中文维基 二进制 位操作(wiki) Byte字节 互联网数据处理:Base64数据编码 Python的模块Base64 16进制简介 python: bytes对象 字符集介绍:ascii 二进制简介: In mathematics and digital electronics, a binary number is a number expressed in the base-2 numberal system or binary numeral system, which uses