NSMutableArray *arr1 = [[NSMutableArray alloc]initWithObjects:@"1",@"2",@"3", nil];
NSMutableArray *arr2 = [[NSMutableArray alloc]init];
转换倒叙
arr2 = (NSMutableArray*)[[arr1 reverseObjectEnumerator]allObjects];
NSMutableArray *arr1 = [[NSMutableArray alloc]initWithObjects:@"1",@"2",@"3", nil];
NSMutableArray *arr2 = [[NSMutableArray alloc]init];
转换倒叙
arr2 = (NSMutableArray*)[[arr1 reverseObjectEnumerator]allObjects];