如何算大写字符中的NSString多少？ [英] How to count the number of uppercase characters in a NSString?

问题描述

我试图找出计算的大写字符是在的NSString数量的最佳方式。我知道如何找出是否有一定的性格是通过使用该code大写的：

 的NSString * S = @这是一个字符串;
BOOL isUppercase = [[NSCharacterSet uppercaseLetterCharacterSet] characterIsMember：[秒characterAtIndex：0]];
 

什么是计数的大写字母在的NSString数量的最佳方法？谢谢你。

解决方案

 的NSString * S = @这是一个字符串;
诠释计数= 0;
对于（I = 0; I＆下; [秒长度];我++）{
    BOOL isUppercase = [[NSCharacterSet uppercaseLetterCharacterSet] characterIsMember：[S characterAtIndex：我]];
    如果（isUppercase == YES）
       算上++;
}
 

计数是大写的出现的次数。

I'm trying to find out the best way to count the number of uppercase characters that are in a NSString. I know how to find out if a certain character is uppercase by using this code:

NSString *s = @"This is a string";
BOOL isUppercase = [[NSCharacterSet uppercaseLetterCharacterSet] characterIsMember:[s characterAtIndex:0]];

What would be the best way to count the number of uppercase letters in a NSString? Thanks.

解决方案

NSString *s = @"This is a string";  
int count=0;  
for (i = 0; i < [s length]; i++) {
    BOOL isUppercase = [[NSCharacterSet uppercaseLetterCharacterSet] characterIsMember:[s characterAtIndex:i]];
    if (isUppercase == YES)
       count++;
}

count is the number of uppercase occurences.

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