python3.4学习笔记(二十二) python 在字符串里面插入指定分割符,将list中的字符转为数字在字符串里面插入指定分割符的方法,先把字符串变成list然后用join方法变成字符串str='1239'result = ",".join(list(str))#输出:1,2,3,9---------------------------------要转浮点数形式的字符串用eval,整数可以用int:for index, item in enumerate(list_a): list
/* 1.是否以某字符串结尾 endsWith(theStr,endStr) @param theStr:要判断的字符串 @param endStr:以此字符串结尾 @return boolean; */ function endsWith(theStr,endStr) { var theStrLength=theStr.length; var endStrLength=endStr.length; var theStrEnd=theStr.substring(theStrLength-endS
1.问题描述 Given a string, determine if it is a palindrome, considering only alphanumeric characters and ignoring cases. For example,"A man, a plan, a canal: Panama" is a palindrome."race a car" is not a palindrome. 输入一个字符串,判断这个字符中所有的数字和字母