查找字符串中某个字符的索引

Question

我有一个字符串NSString *Original=@"88) 12-sep-2012"; 或Original=@"8) blablabla";

我只想打印“)”之前的字符，那么如何找到字符“)”的索引。 或者我怎么做？

提前致谢。

Answer 1

要在第一个右括号之前打印字符，您可以执行以下操作：

NSString *str = [[yourString componentsSeparatedByString:@")"] objectAtIndex:0];
NSLog(@"%@", str);

// If you need the character index:
NSUInteger index = str.length;

Answer 2

你可以像这样找到字符“)”的索引：

NSString *Original=@"88) 12-sep-2012";
NSRange range = [Original rangeOfString:@")"];
if(range.location != NSNotFound)
{
 NSString *result = [Original substringWithRange:NSMakeRange(0, range.location)];
}

Answer 3

可以使用以下代码查看“)”前的字符

   // this would split the string into values which would be stored in an array
   NSArray *splitStringArray = [yourString componentsSeparatedByString:@")"];
   // this would display the characters before the character ")"
   NSLog(@"%@", [splitStringArray objectAtIndex:0]);

Answer 4

NSUInteger index = [Original rangeOfString:@")"];

NSString *result = [Original substringWithRange:NSMakeRange(0, index)];

Answer 5

尝试以下代码以获取字符串中特定字符的索引：-

NSString *string = @"88) 12-sep-2012";
NSCharacterSet *charSet = [NSCharacterSet characterSetWithCharactersInString:@")"];
NSRange range = [string rangeOfCharacterFromSet:charSet];

if (range.location == NSNotFound) 
{
    // ... oops
}
else {
    NSLog(@"---%d", range.location);
    // range.location is the index of character )
}

并在 ) 字符之前获取字符串，请使用：-

NSString *str = [[string componentsSeparatedByString:@")"] objectAtIndex:0];

Answer 6

另一个解决方案：

NSString *Original=@"88) 12-sep-2012";
NSRange range = [Original rangeOfString:@")"];
NSString *result = Original;

if (range.location != NSNotFound)
{
    result = [Original substringToIndex:range.location];
}

NSLog(@"Result: %@", result);