How to concatenate NSArray values by excluding brackets? - ios

Question

My array is like this
(1,2,3,)
(4,5,6,)
(7,8,9,)
I want to concatenate all these values i.e;123456789
I tried like this NSString *str5=[array componentsJoinedByString:#" "];
but I'm not getting the output.
can anyone provide me some information.

Answer 1

Looks like you have an NSArray of NSArray. First loop through the original NSArray and flatten it then apply componentsJoinedByString.
Create an NSMutableArray, loop through your original array and call addObjectsFromArray: with each subarray.
NSMutableArray *flattenArray = [[NSMutableArray alloc] init];
for(NSArray *array in originalArray)
{
[flattenArray addObjectsFromArray: array];
}
NSString *str5 = [flattenArray componentsJoinedByString:#" "];
This should work.

Answer 2

try like this it'l give expected output but i don't know is it efficient method or not ,
NSArray *arr=[[NSArray alloc]initWithObjects:#"(1,2,3)",#"(4,5,6)", nil];
NSString *str=[arr componentsJoinedByString:#""];
NSCharacterSet *doNotWant = [NSCharacterSet characterSetWithCharactersInString:#",()"];
str = [[str componentsSeparatedByCharactersInSet: doNotWant] componentsJoinedByString: #""];
NSLog(#"%#",str);

Answer 3

Try this for Character replacing brackets with null values.
Code ::
NSArray *arr = [[NSArray alloc] initWithObjects:#"(1, 2, 3, )", #"(4, 5, 6, )", #"(7, 8, 9, )", nil];
for (int i = 0; i < [arr count]; i++) {
NSLog (#"==> %#", [or objectAtIndex:i]);
}
NSString *str5 = [arr componentsJoinedByString:#" "];
NSLog(#" ==> %#", str5);
str5 = [str5 stringByReplacingOccurrencesOfString:#"(" withString:#""];
str5 = [str5 stringByReplacingOccurrencesOfString:#" " withString:#""];
str5 = [str5 stringByReplacingOccurrencesOfString:#")" withString:#""];
str5 = [str5 stringByReplacingOccurrencesOfString:#"," withString:#""];
//Or Try this
NSCharacterSet *doNotWantChars = [NSCharacterSet characterSetWithCharactersInString:#",() "];
str5 = [[str5 componentsSeparatedByCharactersInSet: doNotWantChars] componentsJoinedByString: #""];
NSLog(#" ==> %#", str5);
NSLog(#"Output :: %#", str5);
I've replaced "(", ")", " " & "," with ""(null) values
Hopefully, it'll help you.Thanks.