Split an array in half

gistfile1.m

+ (NSArray *)splitArrayIntoHalf:(NSArray *)originalData {
    
    NSRange firstHalfRange;
    firstHalfRange.location = 0;
    firstHalfRange.length = originalData.count / 2;
    
    NSArray *firstHalfArray = [originalData subarrayWithRange:firstHalfRange];
    
    NSRange secondHalfRange;
    secondHalfRange.location = firstHalfRange.length;
    secondHalfRange.length = originalData.count - firstHalfRange.length;
    
    NSArray *secondHaldArray = [originalData subarrayWithRange:secondHalfRange];

    
    return @[firstHalfArray, secondHaldArray];
}