iOS---打印逗号数量

//需要判断的字符串

NSString *judeStr = @"lkajdf.aflkajdflk,akdjflkjadf";

//需要计算格式的字符

NSString *subStr= @",";

//数量

int countSubStr=0;

//计算代码

for (int i=0; i<judeStr.length; i++)

{

countSubStr = [[judeStr substringWithRange:NSMakeRange(i, 1)] isEqualToString:subStr]?countSubStr+1:countSubStr;

}

//打印数量

NSLog(@"字符数量：%d", countSubStr);