###链表
链表的优点是:采用动态存储分配,不会造成内存浪费和溢出; 另外,链表执行插入和删除操作十分方便,修改指针即可,不需要移动大量元素
###oc 实现
#import <Foundation/Foundation.h> @interface OCLinkList : NSObject { id data; OCLinkList *head; OCLinkList *next; } @end @implementation OCLinkList - (void)createLinkList { head = [[OCLinkList alloc] init]; head->next = nil; OCLinkList *ptr = head; for (int i=1; i<=20; i++){ OCLinkList *node = [[OCLinkList alloc] init]; node->data = [NSNumber numberWithInt:i]; node->next = nil; ptr->next = node; ptr = node; } } - (void)outputLinkList { OCLinkList *ptr = head->next; while (ptr != nil) { printf("%d ",[ptr->data intValue]); ptr = ptr->next; } printf("\n"); } @end int main(int argc,const char * argv[]) { @autoreleasepool { OCLinkList *list = [[OCLinkList alloc] init]; [list createLinkList]; [list outputLinkList]; } return 0; }