for (Creature c : clist) c.run(5, true)

时间: 2024-03-30 12:34:10 浏览: 11
这是一个 for 循环,其中 clist 是一个 Creature 类型的集合。在每次循环中,循环变量 c 被赋值为 clist 中的下一个元素。然后,使用 c.run(5, true) 方法来调用每个 Creature 对象的 run 方法,并传递两个参数 5 和 true。这意味着每个 Creature 对象都将以速度 5 运行,并且在运行时输出一些信息(根据 run 方法的实现方式可能会有所不同)。
相关问题

python学校高考录取专业的时候要按辅助排序,输入一个字典{"tom": {'history':45,'geolophy':60}, "jack": {'physic':90,'creature':80}},分别代表某同学的两门课分数,课可能不一样。 请计算每个同学的辅助排序分总分,并按分数高低排名输出。 样例输入 {"tom": {'history':45,'geolophy':60}, "jack": {'physic':90,'creature':80}} 样例输出 jack:170 tom:105

可以使用字典推导式来遍历每个同学的成绩,计算总分并存储到一个新的字典中,然后按字典中的值来输出。 代码如下``` scores = {"tom {'history':45,'olophy':60},jack": {'physic':90,'creature':80}} # 计算每个同学的总分 total_scores = {name: sum(scores[name].values()) for name in scores} # 按照总分排序输出 for name, total_score in sorted(total_scores.items(), key=lambda x: x[1], reverse=True): print(name + ':' + str(total_score), end=' ') ``` 输出结果为: ``` jack:170 tom:105 ``` 解释一下代码: 首先,我们使用字典推导式遍历每个同学的成绩,计算总分并存储到一个新的字典 `total_scores` 中。`total_scores` 的键为同学的姓名,值为该同学的总分。 然后,我们使用 `sorted` 函数对 `total_scores` 中的项按照值进行排序,并使用 `lambda` 函数指定排序的键为字典中的值。`reverse=True` 表示按照降序排列。 最后,我们遍历排序后的结果,输出每个同学的姓名和总分。

class Creature { public Creature() { System.out.println("Creature!"); } } class Animal extends Creature { public Animal(String name) { System.out.println("Animal's name is " + name); } public Animal(String name, int age) { this(name); System.out.println("Animal's age is " + age); } } public class Wolf extends Animal { public Wolf() { super("Wolf", 3); System.out.println("Wolf!"); } public static void main(String[] args) { new Wolf(); } }

这是一个简单的 Java 类继承的例子,输出结果为: Creature! Animal's name is Wolf Animal's age is 3 Wolf! 在这个例子中,Creature 是一个父类,Animal 是 Creature 的子类,Wolf 是 Animal 的子类。当创建一个 Wolf 类对象时,会先调用父类 Creature 的构造函数,输出 "Creature!";然后调用 Animal 类的构造函数,输出 "Animal's name is Wolf" 和 "Animal's age is 3";最后调用 Wolf 类的构造函数,输出 "Wolf!"。这个例子展示了子类如何调用父类的构造函数,以及如何在子类构造函数中调用父类的构造函数。

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1444. Elephpotamus Time limit: 0.5 second Memory limit: 64 MB Harry Potter is taking an examination in Care for Magical Creatures. His task is to feed a dwarf elephpotamus. Harry remembers that elephpotamuses are very straightforward and imperturbable. In fact, they are so straightforward that always move along a straight line and they are so imperturbable that only move when attracted by something really tasty. In addition, if an elephpotamus stumbles into a chain of its own footprints, it falls into a stupor and refuses to go anywhere. According to Hagrid, elephpotamuses usually get back home moving along their footprints. This is why they never cross them, otherwise they may get lost. When an elephpotamus sees its footprints, it tries to remember in detail all its movements since leaving home (this is also the reason why they move along straight lines only, this way it is easier to memorize). Basing on this information, the animal calculates in which direction its burrow is situated, then turns and goes straight to it. It takes some (rather large) time for an elephpotamus to perform these calculations. And what some ignoramuses recognize as a stupor is in fact a demonstration of outstanding calculating abilities of this wonderful, though a bit slow-witted creature. Elephpotamuses' favorite dainty is elephant pumpkins, and some of such pumpkins grow on the lawn where Harry is to take his exam. At the start of the exam, Hagrid will drag the elephpotamus to one of the pumpkins. Having fed the animal with a pumpkin, Harry can direct it to any of the remaining pumpkins. In order to pass the exam, Harry must lead the elephpotamus so that it eats as many pumpkins as possible before it comes across its footprints. Input The first input line contains the number of pumpkins on the lawn N (3 ≤ N ≤ 30000). The pumpkins are numbered from 1 to N, the number one being assigned to the pumpkin to which the animal is brought at the start of the trial. In the next N lines, the coordinates of the pumpkins are given in the order corresponding to their numbers. All the coordinates are integers in the range from −1000 to 1000. It is guaranteed that there are no two pumpkins at the same location and there is no straight line passing through all the pumpkins. Output In the first line write the maximal number K of pumpkins that can be fed to the elephpotamus. In the next K lines, output the order in which the animal will eat them, giving one number in a line. The first number in this sequence must always be 1.写一段Java完成此目的

Based on the following story, continue the story by writing two paragraphs, paragraph 1 beginning with "A few weeks later, I went to the farm again. " and paragraph 2 beginning with "I was just about to leave when the hummingbird appeared."respectively with 150 words. I was invited to a cookout on an old friend's farm in western Washington. I parked my car outside the farm and walked past a milking house which had apparently not been used in many years.A noise at a window caught my attention,so I entered it. It was a hummingbird,desperately trying to escape. She was covered in spider-webs and was barely able to move her wings. She ceased her struggle the instant I picked her up. With the bird in my cupped hand, I looked around to see how she had gotten in. The broken window glass was the likely answer. I stuffed a piece of cloth into the hole and took her outside,closing the door securely behind me. When I opened my hand, the bird did not fly away; she sat looking at me with her bright eyes.I removed the sticky spider-webs that covered her head and wings. Still, she made no attempt to fly.Perhaps she had been struggling against the window too long and was too tired? Or too thirsty? As I carried her up the blackberry-lined path toward my car where I kept a water bottle, she began to move. I stopped, and she soon took wing but did not immediately fly away. Hovering,she approached within six inches of my face. For a very long moment,this tiny creature looked into my eyes, turning her head from side to side. Then she flew quickly out of sight. During the cookout, I told my hosts about the hummingbird incident. They promised to fix the window. As I was departing, my friends walked me to my car. I was standing by the car when a hummingbird flew to the center of our group and began hovering. She turned from person to person until she came to me. She again looked directly into my eyes, then let out a squeaking call and was gone. For a moment, all were speechless. Then someone said, “She must have come to say good-bye.”

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