How to add a number to an array element?

Question

Objective-C

Good day, I have an array (NSArray)
self.myArray = [NSArray arrayWithObjects:@0,@0,nil]; // 0,0
how now to add 1 (++) to 1 element? // 1.0
Have to work with SMI arrays?

Answer 1

NSArray is static.
The first thing that came to mind was something like this.

NSMutableArray *array = ;      
NSLog(@"array %@",array);// 0, 0
[array replaceObjectAtIndex:0 withObject:@([array[0] intValue] +1)];
NSLog(@"array %@",array);// 1, 0