How to split a string with the uppercase character in iPhone [closed]

Closed. This question needs to be mo开发者_如何学Cre focused. It is not currently accepting answers.

---

Want to improve this question? Update the question so it focuses on one problem only by editing this post.

Closed 6 years ago.

Improve this question

I want to separate a string with the occurrence of the Uppercase letters. Suppose I have an string like "IAmABoy".I want the resulting strings like

I
Am
A
Boy.

How to do this? Is there any sample code? Please show me the way to do this.

---

What about something simple like just iterating over each character? Assuming inputString and outputString are NSStrings something like this should work:

  NSUInteger length = [inputString length];
  for (NSUInteger i = 0; i < length; i++)
  {
    char c = [inputString characterAtIndex:i];
    if (i > 0 && c >= 65 && c <=90)
    {
      [outputString appendFormat:@"\n%c", c];
    }
    else
    {
      [outputString appendFormat:@"%c", c];
    }
  }

---

Thanx Carson for you reply.But the line

[outputString appendFormat:@"\n%c", c];

througing some exception.I have modify your code to the following one and it seems to be working for me.

---

NSString *inputString=@"IAmABoy"; NSString *outputString; NSString *string=@""; NSUInteger length = [inputString length]; for (NSUInteger i = 0; i < length; i++) { char c = [inputString characterAtIndex:i]; if (i > 0 && c >= 65 && c <=90) { //[outputString appandFormate:@"\n%c", c]; outputString=[NSString stringWithFormat:@"%c", c]; string = [NSString stringWithFormat:@"%@%@%@",string,@" ",outputString]; NSLog(@"%@", string); } else { //[outputString appendFormat:@"%c", c]; outputString=[NSString stringWithFormat:@"%c", c]; //NSLog(@"%@",outputString); string = [NSString stringWithFormat:@"%@%@",string,outputString]; NSLog(@"%@", string); } }

---

Thanx once again to all for your cooperations and help.

---

I'd suggest importing a Regex library or taking a look at NSScanner.

---

look into RegexKitLite

---

Try using -rangeOfCharacterFromSet: and splitting the string based on where you find the upper-case characters.

---

extension String { public func stringFromPascalCase() -> String { return self.characters.enumerate().map { (String($1).componentsSeparatedByCharactersInSet(.uppercaseLetterCharacterSet()).joinWithSeparator("").isEmpty && $0 > 0) ? " \($1)" : "\($1)" }.joinWithSeparator("") } }

this should do the trick.

let x = "EastMayerDrive".stringFromPascalCase() print(x) /// East Mayer Drive