取出数组中指定范围位置的子数组

#import "ViewController.h"

@interface ViewController ()

/** <#注释#> */

@property(nonatomic, strong) NSMutableArray *arrM;

@end

@implementation ViewController

-(NSMutableArray *)arrM{

if (_arrM == nil) {

_arrM = [NSMutableArray array];

}

return _arrM;

}

- (void)viewDidLoad {

[super viewDidLoad];

NSArray *larger = @[@"1",@"2",@"3",@"4",@"5",@"6",@"7",@"8",@"9",@"10"];

[self.arrM addObjectsFromArray:[larger subarrayWithRange:NSMakeRange(0, 3)]];

//[larger subarrayWithRange:NSMakeRange(0, 3)];
NSLog(@"%@--%zd",self.arrM,self.arrM.count);

}

@end

 NSArray *larger = @[@"1",@"2",@"3",@"4",@"5",@"6",@"7",@"8",@"9",@"10"];
   [self.arrM addObjectsFromArray:[larger subarrayWithRange:NSMakeRange(0, 3)]];
    //[larger subarrayWithRange:NSMakeRange(0, 3)];
    NSLog(@"%@--%zd",self.arrM,self.arrM.count);