How to split an NSArray into two equal pieces?

Question

I have an NSArray, and I want to split it into two equal pieces (if odd \"count\" then add to the latter new array) - I want to split it \"down the middle\" so to speak.

Answer 1

You also have the option of using -subarrayWithRange: detailed in the NSArray documentation:

NSArray *firstHalfOfArray;
NSArray *secondHalfOfArray;
NSRange someRange;

someRange.location = 0;
someRange.length = [wholeArray count] / 2;

firstHalfOfArray = [wholeArray subarrayWithRange:someRange];

someRange.location = someRange.length;
someRange.length = [wholeArray count] - someRange.length;

secondHalfOfArray = [wholeArray subarrayWithRange:someRange];

This method returns new, autorelease-d arrays.