字符串是可能含有大小写的, 在String::compareTo中认为A和a是不同的, 那么在忽略大小写的场景中就不适用了;既然String提供了基于Comparator的内部类, 是不是对这种场景做了特殊处理呢?我们接下来看CaseInsensitiveComparator的核心实现: 可以看到compare的逻辑和String:compareTo大同小异, 只是在第二步的时候做了特殊...
1publicintcompare(String s1, String s2) {2intn1 =s1.length();3intn2 =s2.length();4intmin =Math.min(n1, n2);5for(inti = 0; i < min; i++) {6charc1 =s1.charAt(i);7charc2 =s2.charAt(i);8if(c1 !=c2) {9c1 =Character.toUpperCase(c1);10c2 =Character.toUpperCase(c2);11...
CASE_INSENSITIVE_ORDER是CaseInsensitiveComparator类的对象，这个类是String类的内部类，并且实现了Comparator接口。那再看看这个CaseInsensitiveComparator是怎么实现Comparator接口的compare方法的吧。如图中代码所示，对两个字符串进行比较时，会将字符串中的字符转换成统一的大小写进行比较，这样就达到了忽略大小写的功能。这...
/// \brief Perform a case-insensitive string compare (`strncmp()` case-insensitive) to see /// if two C-strings are equal. /// \note 1. Identical to `strncmp()` except: /// 1. It is case-insensitive. /// 2. The behavior is NOT undefined (it is well-defined) if either strin...
(linguistic) case-insensitive comparison. result = String.Compare(string1, string2, new CultureInfo("en-US"), CompareOptions.IgnoreCase); if (result > 0) relation = "comes after"; else if (result == 0) relation = "is the same as"; else relation = "comes before"; Console.WriteLine("...
```/** *1.- (NSComparisonResult)caseInsensitiveCompare:(NSString *)string; * * @param string:The string with which to compare the receiver. * * @return :Returns an NSComparisonResult value that indicates the lexical ordering. NSOrderedAscending the receiver precedes aString in lexical ordering, ...
Convert strings to upper case and then compare them using the strict operator (===). Pattern matching using string methods: Use the "search" string method for case insensitive search. <!doctype html> // 1st way var a = "apple"; var b = "APPLE"; if (a.toUpperCase() === b.to...
else{NSLog(@"两个字符串not equal");}// NSComparisonResult是一个枚举量NSComparisonResult resut=[stri1 caseInsensitiveCompare:stri2];NSLog(@"%ld",resut);*/// 截取字符串NSString*string1=@" 今天 天晴 了 ";NSString*string2=@" 今天 天阴 了 ";NSLog(@"%@",[string1 substringFromIndex:2])...
首先说一下为什么要比较完大写还要比较小写：因为在某些字母里面，例如格鲁吉亚字母表，转换大写是无效的，...
[Android.Runtime.Register("CASE_INSENSITIVE_ORDER")]publicstaticJava.Util.IComparator? CaseInsensitiveOrder {get; } 属性值 IComparator 属性 RegisterAttribute 注解 将对象排序String为依据compareToIgnoreCase的比较器。 此比较器可序列化。 请注意,此比较器不<><>考虑区域设置,并且会导致某些区域设置的排序不尽...