#tri

C#中的转义字符verbatim string

Inaverbatimstring(astringstartingwith@"")toescapedoublequotesyouusedoublequotes,e.g.@"Pleasepress""Ok"".".Ifyouwanttodoitwithverbatimstringsthenyouwoulddosometh...

344. Reverse String

https://leetcode.com/problems/reverse-string/Writeafunctionthatreversesastring.Theinputstringisgivenasanarrayofcharacters char[].Donotallocateextraspacefor...
代码星球 ·2021-02-08

decimal and double ToString problem

  decimald2=0.0000002500m;Console.WriteLine(d2.ToString());doubled3=0.0000002500;Console.WriteLine(d3.ToString()); 输出结果是,0.00000025002.5E-07doubl...

101. Symmetric对称 Tree

Givenabinarytree,checkwhetheritisamirrorofitself(ie,symmetricarounditscenter).Forexample,thisbinarytree[1,2,2,3,4,4,3]issymmetric:1/22//3443 Butthefollowin...
代码星球 ·2021-02-08

FileAttributes Enum

https://docs.microsoft.com/en-us/dotnet/api/system.io.fileattributes?view=netframework-4.7.2在桌面新建一个文件file-to-delete.txt,设置只读属性。先删除,然后从回收站还原[Test]publicvoidFileA...
代码星球 ·2021-02-08

通过泛型,将string转换为指定类型

YoushouldusetheTypeDescriptorclass:publicstaticTConvert<T>(thisstringinput){try{varconverter=TypeDescriptor.GetConverter(typeof(T));if(converter!=null){//...

jQuery FileUpload doesn't trigger 'done'

 https://stackoverflow.com/questions/14674999/jquery-fileupload-doesnt-trigger-done IfyourserverisnotreturningJSON,tryremoving:dataType:'json'Otherwis...

Why are dashes preferred for CSS selectors / HTML attributes?

IusedashesbecauseIdon'thavetohittheshiftkey.Whetherdashisinterpretedaspunctuationorasanopaqueidentifierdependsontheeditorofchoice,Iguess.However,asapersonalpref...

LeetCode:5. Longest Palindromic Substring(Medium)

原题链接:https://leetcode.com/problems/longest-palindromic-substring/description/1.题目要求:找出字符串中的最大回文子串 2.注意:要考虑回文子串中的字符个数是奇数还是偶数!!!例如,“aabaa”是一个奇数个字符的回文字符串,他的中心...

LeetCode:3.Longest Substring Without Repeating Characters

思路:看到题目首先想到最大字符串匹配KMP算法1publicstaticintlengthOfLongestSubstring(Strings){2intmaxLength=0;3StringBuildersb=newStringBuilder(s);4a:for(inti=0;i<sb.length();i++...

机器学习实战:KNN代码报错“AttributeError: 'dict' object has no attribute 'iteritems'”

 报错代码: sortedClassCount=sorted(classCount.iteritems(),key=operator.itemgetter(1),reverse=True) 解决办法:Python3中不再支持iteritems(),将iteritems()改成items()...

void bind(String sName,Object object);――绑定:把名称同对象关联的过程

voidbind(StringsName,Objectobject);――绑定:把名称同对象关联的过程voidrebind(StringsName,Objectobject);――重新绑定:用来把对象同一个已经存在的名称重新绑定voidunbind(StringsName);――释放:用来把对象从目录中释放出来Obje...

java String去除两端的空格和空字符

java中String有个trim()能够去掉一个字符串的前后空格。但是trim()只能去掉字符串中前后的半角空格,而无法去掉全角空格。去掉全角空格需要在trim()方法的基础上加上一些判断。StringtextContent="abctest ";textContent=textContent.trim();whil...

String转int的几种常用方法

String类型转int类型通常需要int的包装类Integer,该类有三个方法可以实现这种转换,分别为decode(Strings)、parseInt(Strings)、valueOf(Strings)。那么他们有哪些不同呢?下面看看API文档中的介绍: decode(Strings):将 Str...

Java 如何将String转化为Int

在 Java 中要将 String 类型转化为 int 类型时,需要使用 Integer 类中的 parseInt() 方法或者 valueOf() 方法进行转换.例1:123456String&nb...
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