我是小小的搬运工

#import //Public: is available an accessible from anywhere//Protected: is available only to subclasses//Private: is available to the class only//Package: is available from that p

#import void quicksortInPlace(NSMutableArray *array,NSInteger first, NSInteger last,NSComparator comparator) {    if (first >= last)return;    id pivot = array[(first + last) /2]; 

iOS程序猿，一定见过下面这道面试题：@implementation Son : Father - (id)init { self = [super init]; if (self) { NSLog(@"%@", NSStringFromClass([self class])); NSLog(@"%@", NSStr