Objective-C中列表倒序__interface

來源:互聯網
上載者:User

@interface NSArray (Reverse)

 

- (NSArray *)reversedArray;

 

@end

 

 

@interface NSMutableArray (Reverse)

 

- (void)reverse;

 

@end

 

 

@implementation NSArray (Reverse)

 

- (NSArray *)reversedArray {

    NSMutableArray *array = [NSMutableArray arrayWithCapacity:[self count]];

    NSEnumerator *enumerator = [self reverseObjectEnumerator];

    for (id element in enumerator) {

        [array addObject:element];

    }

    return array;

}

 

@end

 

@implementation NSMutableArray (Reverse)

 

- (void)reverse {

    NSUInteger i = 0;

    NSUInteger j = [self count] - 1;

    while (i < j) {

        [self exchangeObjectAtIndex:i

                  withObjectAtIndex:j];

        i++;

        j--;

    }

}

 

@end

相關文章

聯繫我們

該頁面正文內容均來源於網絡整理,並不代表阿里雲官方的觀點,該頁面所提到的產品和服務也與阿里云無關,如果該頁面內容對您造成了困擾,歡迎寫郵件給我們,收到郵件我們將在5個工作日內處理。

如果您發現本社區中有涉嫌抄襲的內容,歡迎發送郵件至: info-contact@alibabacloud.com 進行舉報並提供相關證據,工作人員會在 5 個工作天內聯絡您,一經查實,本站將立刻刪除涉嫌侵權內容。

A Free Trial That Lets You Build Big!

Start building with 50+ products and up to 12 months usage for Elastic Compute Service

  • Sales Support

    1 on 1 presale consultation

  • After-Sales Support

    24/7 Technical Support 6 Free Tickets per Quarter Faster Response

  • Alibaba Cloud offers highly flexible support services tailored to meet your exact needs.