Question

Is there a way to shorten this code?

NSMutableArray *allobjects = [[NSMutableArray alloc] initWithCapacity:b];

    if (b == 1) {
        [allobjects addObject:object];
    }else if (b == 2){
        [allobjects addObject:object];   
        [allobjects addObject:object2];
    }else if (b == 3){

        [allobjects addObject:object];
        [allobjects addObject:object2];
        [allobjects addObject:object3];
    }else if (b == 4){

        [allobjects addObject:object];
        [allobjects addObject:object2];
        [allobjects addObject:object3];
        [allobjects addObject:object4];

    }else if (b == 5){

        [allobjects addObject:object];
        [allobjects addObject:object2];
        [allobjects addObject:object3];
        [allobjects addObject:object4];
        [allobjects addObject:object5];
    }else if (b == 6){

        [allobjects addObject:object];
        [allobjects addObject:object2];
        [allobjects addObject:object3];
        [allobjects addObject:object4];
        [allobjects addObject:object5];
        [allobjects addObject:object6];
    }else if (b == 7){

        [allobjects addObject:object];
        [allobjects addObject:object2];
        [allobjects addObject:object3];
        [allobjects addObject:object4];
        [allobjects addObject:object5];
        [allobjects addObject:object6];
        [allobjects addObject:object7];
    }else if (b == 8){

        [allobjects addObject:object];
        [allobjects addObject:object2];
        [allobjects addObject:object3];
        [allobjects addObject:object4];
        [allobjects addObject:object5];
        [allobjects addObject:object6];
        [allobjects addObject:object7];
        [allobjects addObject:object8];
    }

As you can see, if b equals 1 I add object1, if b is 2, I add both object1 and object2, and so on.

Answer 1

Put all those strings into a C array:

NSString * objects[] = { object1, object2, object3, object4, object5, object6, object7, object8, object9 };

Then iterate over that once you know what b‘s value is:

allObjects = [NSMutableArray array];
for( int i = 0; i < b; i++ ){
    [allObjects addObject:objects[i]];
}

Or, even better, do:

allObjects = [NSMutableArray arrayWithObjects:objects count:b];