Question

Like for example : To Create a string object with string “Welcome to objective-C”
and then to Print the string in as “objective-C to Welcome”
This should work for any string. Please help. Thanks 🙂

Answer 1

Here you go. Not the most efficient solution but does his work.

NSString *myString = @"This is a test";
NSArray *myWords = [myString componentsSeparatedByString:@" "];
// myWords is now: [@"This", @"is", @"a", @"test"]
NSMutableArray *reversed = [NSMutableArray arrayWithCapacity:[myWords count]];
NSEnumerator *enumerator = [myWords reverseObjectEnumerator];
for (id element in enumerator) {
    [reversed addObject:element];
}
NSString *reverseString = [reversed componentsJoinedByString:@" "];
NSLog(@"%@", reverseString);

If you have any question let me know.

Update

You can try just a simple for cycle. Like this.

NSString *myString = @"This is a test";
NSArray *myWords = [myString componentsSeparatedByString:@" "];
NSMutableString* theString = [NSMutableString string];
for (int i=[myWords count]-1; i>=0;i--){
    [theString appendFormat:@"%@ ", [myWords objectAtIndex:i]];
}