cocoa - How to add these object with name to the array by this order?

Question

I have some object with name , just like button 1 , button 2 , button 11 ,button 111 , I want to add this object to a array by this order: button 1 ,button 2 , button 11 , button 111 ,but I found that these object can add the array by this order: button 1 , button 11,button 111 , button 2.why ? Thank you for your answer!

Answer 1

Use the NSNumericSearch option in your sort comparison.