2016: [Usaco2010]Chocolate Eating Time Limit: 10 Sec Memory Limit: 162 MB Submit: 224 Solved: 87 [
1609: [Usaco2008 Feb]Eating Together麻烦的聚餐 Time Limit: 10 Sec Memory Limit: 64 MB Submit: 1010 Solved
Holedox Eating Time Limit: 4000/2000 MS (Java/Others) Memory Limit: 32768/32768 K (Java/Others) Total
Philosopher:2 IS EATING. Philosopher:1 IS EATING. Philosopher:4 IS EATING. Philosopher:5 IS EATING....Philosopher:2 IS EATING. Philosopher:4 IS EATING. Philosopher:5 IS EATING....Philosopher:3 IS EATING. Philosopher:5 IS EATING. Philosopher:4 IS EATING. Philosopher:2 IS EATING....Philosopher:2 IS EATING. Philosopher:5 IS EATING. Philosopher:4 IS EATING....Philosopher:3 IS EATING. Philosopher:4 IS EATING. Philosopher:2 IS EATING. Philosopher:5 IS EATING.
(void) {cout << "use chopsticks to eat" << endl;} }; 紧接着,我们编写一下test代码,代码如下所示: void test_eating(Human&...e; Chinese c; test_eating(h); test_eating(e); test_eating(c); return 0; } 按照常规思路,在调用 test_eating...,在成员函数的前面加了virtual关键字,则将eating函数就变成了虚函数,Human的eating方法变成了虚函数,那么EnglishMan类和chinese类的eating方法也变成了虚函数。...: void test_eating(Human h) { h.eating(); } 这个时候,继续执行上述所示的主函数,主函数代码如下所示: int main(int argc..., char **argv) { Human h; Englishman e; Chinese c; test_eating(h); test_eating
子类和父类 在 Dart 中,我们可以使用 extends 关键字来创建一个子类: class Animal { void eat() { print('Eating...'); } }...使用super关键字访问父类 在 Dart 中,我们可以使用 super 关键字来访问父类的方法: class Animal { void eat() { print('Eating...'...); } } class Cat extends Animal { void eat() { print('Cat eating...'); super.eat(); }...} var cat = Cat(); cat.eat(); // 输出: // Cat eating... // Eating......cat.eat(); // 输出 Cat eating...
先来看两个类, class Animal { public: void eat() { std::cout << "I'm eating generic food....generic food." cat->eat(); // Outputs: "I'm eating a rat."...generic food." func(cat); // Outputs: "I'm eating generic food."...class Animal { public: virtual void eat() { std::cout << "I'm eating generic food...."; } }; func(animal); // Outputs: "I'm eating generic food." func(cat); // Outputs: "I'm eating a
Human类里使用到了纯虚函数的概念,类实现的代码如下所示: class Human { private: int a; public: /*纯虚函数*/ virtual void eating...(void) = 0; virtual void driving(void) = 0; }; class Englishman : public Human { public: void eating...driving(void) {cout<<"drive english car"<<endl; } }; class Chinese : public Human { public: void eating...我们继续来完善我们的代码,先从主函数说起,主函数代码如下所示: void test_eating(Human *h) { h->eating(); } int main(int argc, char...最后,我们来测试一下,我们使用动态链接库所带来的优点,比如,我现在更改了Chinese.cpp的eating函数,代码如下: void Chinese::eating(void) { cout<<
(void) {cout << "use knife to eat" << endl;} }; class Chinese : public Human { public: void eating...(void) {cout << "use chopsticks to eat" << endl;} }; 紧接着,我们编写一下test代码,代码如下所示: void test_eating(Human...Englishman e; Chinese c; test_eating(h); test_eating(e); test_eating(c); return...0; } 按照常规思路,在调用 test_eating()函数的时候,我们传入的实参不同,那么它就会调用不同实参所对应的成员函数,我们看代码的运行结果: ?...类的实现里,在成员函数的前面加了virtual关键字,则将eating函数就变成了虚函数,Human的eating方法变成了虚函数,那么EnglishMan类和chinese类的eating方法也变成了虚函数
class Animal { void eat(); } class Cat extends Animal { @override void eat() { print('Cat eating......'); } } class Dog extends Animal { @override void eat() { print('Dog eating...'); } }...... feedAnimal(dog); // 输出 Dog eating......class Animal { void eat() { print('Eating...'); } } class Cat implements Animal { @override...void eat() { print('Cat eating...'); } } 在上述例子中,Animal 类作为接口被 Cat 类实现。
BlackCat implements ICat { @Override public void eat() { System.out.println("The black cat is eating...BlackDog implements IDog { @Override public void eat() { System.out.println("The black dog is eating...WhiteCat implements ICat { @Override public void eat() { System.out.println("The white cat is eating...IDog whiteDog = whiteAnimalFactory.createDog(); whiteDog.eat(); } } 输出结果 The black cat is eating...The black dog is eating The white cat is eating! The white dog is eating!
. // I am eating lunch LazyMan('Tony').eat('lunch').sleep(10).eat('dinner'); // Hi I am Tony // I am...eating lunch // 等待了10秒... // I am eating diner LazyMan('Tony').eat('lunch').eat('dinner').sleepFirst...(5).sleep(10).eat('junk food'); // Hi I am Tony // 等待了5秒... // I am eating lunch // I am eating dinner...// 等待了10秒... // I am eating junk food 功能难点是要以指定顺序执行代码,方法调用顺序又不与执行顺序不对等,所以核心目的是创建一个任务队列,这个任务队列,必须是同步执行的...await this.cbs.shift()() } }) } eat(meal){ this.cbs.push(()=>console.log(`I am eating
): def __init__(self,name): self.name = name def eat(self): print ('%s is eating...): def __init__(self,name): self.name = name def eat(self): print ('%s is eating...): def __init__(self,name): self.name = name def eat(self): print ('%s is eating...init__(self,name): self.name = name def eat(self,food): #设置food参数 print ('%s is eating...def __init__(self,name): self.name = name def eat(self,food): print ('%s is eating
Human类里使用到了纯虚函数的概念,类实现的代码如下所示: class Human { private: int a; public: /*纯虚函数*/ virtual void eating...void) = 0; virtual void driving(void) = 0; }; class Englishman : public Human { public: void eating...driving(void) {cout<<"drive english car"<<endl; } }; class Chinese : public Human { public: void eating...我们继续来完善我们的代码,先从主函数说起,主函数代码如下所示: void test_eating(Human *h) { h->eating(); } int main(int argc, char...最后,我们来测试一下,我们使用动态链接库所带来的优点,比如,我现在更改了Chinese.cpp的eating函数,代码如下: void Chinese::eating(void) { cout
def __init__(self, name): self.name = name def eat(self,food): #吃东西 print("%s is eating... %s" % (self.name,food)) d = Dog("二哈") d.eat('包子') 执行输出: 二哈 is eating 包子 将eat方法变成静态方法: class Dog(object...self.name = name @staticmethod # 把eat方法变为静态方法 def eat(self,food): #吃东西 print("%s is eating... self.name = name @staticmethod # 把eat方法变为静态方法 def eat(): #吃东西 print("%s is eating..." % ('二哈')) d = Dog("二哈") d.eat() 执行输出: 二哈 is eating 如果一定要self呢?
. | Eating | | 2 | Jade W. | Singing | | 3 | Victor J. | Singing | | 4 | Elvis Q. | Eating | | 5 | Daniel...A. | Eating | | 6 | Bob B. | Horse Riding | +------+--------------+---------------+ Activities 表: +-...-----+--------------+ | id | name | +------+--------------+ | 1 | Eating | | 2 | Singing | | 3 | Horse...------------+ Result 表: +--------------+ | activity | +--------------+ | Singing | +--------------+ Eating
e; Chinese c; test_eating(h); test_eating(e); test_eating(c); return 0; } 上述所体现的是多态的特性...首先给出代码实现: void test_eating(Human& h) { Englishman *pe; Chinese *pc; h.eating();...首先,我们先定义一个Guangximan,代码如下所示: class Guangximan : public Chinese { public: void eating(void) { cout...<<"use chopsticks to eat, I come from guangxi"<<endl; } }; 在 test_eating函数里增加如下代码: void test_eating(...(); } 主函数代码如下所示: int main(int argc,char **argv) { Guangximan g; test_eating(g); return
change state from eating to coding"); [_coder setState:(State *)[_coder stateCoding]]; } - (void...)startEating{ NSLog(@"Already eating, can not change state to eating again"); } - (void)fallAsleep...{ NSLog(@"Too tired, change state from eating to sleeping"); [_coder setState:(State *)[_coder...[coder startEating];//Change state from awake to eating //change to coding [coder startCoding];//New...change state from eating to coding //change to sleep [coder fallAsleep];//Too tired, change state from
| Eating | | 2 | Jade W. | Singing | | 3 | Victor J....| Eating | | 5 | Daniel A. | Eating | | 6 | Bob B....--+ Activities 表: +------+--------------+ | id | name | +------+--------------+ | 1 | Eating...-+ Result 表: +--------------+ | activity | +--------------+ | Singing | +--------------+ Eating
def __init__(self,name): self.name = name def eat(self,food): print ('%s is eating...%s' %(self.name,food)) d = Dog('XiaoBai') d.eat('包子') 执行结果: XiaoBai is eating 包子 class Dog(object)...self,name): self.name = name @staticmethod def eat(self,food): print ('%s is eating...def eat(self): print ('%s is eating %s' %(self.name,'abc')) #被静态方法以后就不能再调用类的self.name了 d...File "E:/Python/Day7/属性方法.py", line 13, in eat print ('%s is eating %s' %(self.name,self.
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