replace characters in a string

Question

i have a sting in which i want to replace all characters(except special characters) by X.. i mean if i have a string str= mac,iphone & ipad are products of apple

theis should be converted to

str= XXX,XXXXXX & XXXX XXX XXXXXXXX XX XXXXX

i know this can be done by finding all special characters and note their position and then replace all other characters except these special characters but there are so many special characters should i check them one by one ? or is there any other method to identify them

please help

Swastik · Accepted Answer · 2010-10-14 06:24:00Z

5

NSString *str=@"mac,iphone & ipad";

for(int i=0;i<[str length];i++)
{
    int str1=(int)[str characterAtIndex:i];
    NSString *temp=[NSString stringWithFormat:@"%C",str1];

    if(str1 >96 && str1 <123  || str1 >64 && str1 <91)

        str = [str stringByReplacingOccurrencesOfString:temp withString:@"X"];
}

Hope this helps...This will replace all characters either in upper/lower case

answered Oct 14, 2010 at 6:24

Swastik

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1 Comment

Ranjeet Sajwan Over a year ago

good work sherry....it worked and i become to know some special....moves....voted and accepted will you please answer my another question here stackoverflow.com/questions/3869790/…

Pang · Accepted Answer · 2018-03-15 03:25:24Z

2

NSString *s = @"foo/bar:baz.foo";
NSCharacterSet *doNotWant = [NSCharacterSet characterSetWithCharactersInString:@"/:."];
s = [[s componentsSeparatedByCharactersInSet: doNotWant] componentsJoinedByString: @""];
NSLog(@"%@", s);

Try this. It is more useful when the above answered ways don't replace the characters.

edited Mar 15, 2018 at 3:25

Pang

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answered Oct 23, 2010 at 11:19

Sabby

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1 Comment

Sabby Over a year ago

interworld and your org name whats that?

Soviut · Accepted Answer · 2010-10-14 05:04:47Z

1

[Nsstring stringByReplacingOccurrencesOfString:@"" withString:@"X"];

from this you can replace string according to my knowledge

edited Oct 14, 2010 at 5:04

Soviut

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answered Oct 14, 2010 at 5:03

GhostRider

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3 Comments

Ranjeet Sajwan Over a year ago

it does not works good for my problem this is not for all characters from a-z

GhostRider Over a year ago

just take one array and store all in array and then compare each array object if it is alphabet then change it into X other wise save as it in append string

Ranjeet Sajwan Over a year ago

actually the main problem is ..how to check that current character is alphabet

Pang · Accepted Answer · 2018-03-15 03:26:25Z

1

- (void)parser:(NSXMLParser *)parser foundCharacters:(NSString *)string
{
    if(TextFound)
    {
        NSCharacterSet *doNotWant = [NSCharacterSet characterSetWithCharactersInString:@"/<br />"];
        string = [[string componentsSeparatedByCharactersInSet: doNotWant] componentsJoinedByString: @""];

        TextStr = [TextStr stringByAppendingString:string];
    }
}

As I did it in my parsing, it was showing linebreak character in the text. I tried the way stringbyrplacingoccurance of string, but nothing happened, so finally it worked.

edited Mar 15, 2018 at 3:26

Pang

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answered Oct 23, 2010 at 11:23

Sabby

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Comments

Nimrod · Accepted Answer · 2010-10-14 05:28:44Z

0

I'd use a regular expression. Check out the documentation for NSRegularExpression

answered Oct 14, 2010 at 5:28

Nimrod

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