localizations: #1771 Spanish translation and languages codes (#1777)

* #1771 Move translations to a new directory to have more organization * #1771 spanish translation * #1771 change the language codes to follow ISO 639-1 and change the links * #1771 remove country flags
2021-06-04 20:36:42 +02:00
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--- a/localization/zh/strategy/README.md
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+---
+layout: pattern
+title: Strategy
+folder: strategy
+permalink: /patterns/strategy/zh
+categories: Behavioral
+language: zh
+tags:
+ - Gang of Four
+---
+
+## 又被称为
+政策（方针）模式
+
+## 目的
+
+定义一个家族算法，并封装好其中每一个，使它们可以互相替换。策略模式使算法的变化独立于使用它的客户。
+
+## 解释
+
+现实世界例子
+
+> 屠龙是一项危险的职业。有经验将会使它变得简单。经验丰富的屠龙者对不同类型的龙有不同的战斗策略。       
+
+直白点说
+
+> 策略模式允许在运行时选择最匹配的算法。
+
+维基百科上说
+
+> 在程序编程领域，策略模式（又叫政策模式）是一种启用在运行时选择算法的行为型软件设计模式。
+
+**编程实例**
+
+让我们先介绍屠龙的策略模式接口和它的实现。
+
+```java
+@FunctionalInterface
+public interface DragonSlayingStrategy {
+
+  void execute();
+}
+
+@Slf4j
+public class MeleeStrategy implements DragonSlayingStrategy {
+
+  @Override
+  public void execute() {
+    LOGGER.info("With your Excalibur you sever the dragon's head!");
+  }
+}
+
+@Slf4j
+public class ProjectileStrategy implements DragonSlayingStrategy {
+
+  @Override
+  public void execute() {
+    LOGGER.info("You shoot the dragon with the magical crossbow and it falls dead on the ground!");
+  }
+}
+
+@Slf4j
+public class SpellStrategy implements DragonSlayingStrategy {
+
+  @Override
+  public void execute() {
+    LOGGER.info("You cast the spell of disintegration and the dragon vaporizes in a pile of dust!");
+  }
+}
+```
+
+现在有一个强力的屠龙者要基于上面的组件来选择他的战斗策略。
+
+```java
+public class DragonSlayer {
+
+  private DragonSlayingStrategy strategy;
+
+  public DragonSlayer(DragonSlayingStrategy strategy) {
+    this.strategy = strategy;
+  }
+
+  public void changeStrategy(DragonSlayingStrategy strategy) {
+    this.strategy = strategy;
+  }
+
+  public void goToBattle() {
+    strategy.execute();
+  }
+}
+```
+
+最后是屠龙者的行动。
+
+```java
+    LOGGER.info("Green dragon spotted ahead!");
+    var dragonSlayer = new DragonSlayer(new MeleeStrategy());
+    dragonSlayer.goToBattle();
+    LOGGER.info("Red dragon emerges.");
+    dragonSlayer.changeStrategy(new ProjectileStrategy());
+    dragonSlayer.goToBattle();
+    LOGGER.info("Black dragon lands before you.");
+    dragonSlayer.changeStrategy(new SpellStrategy());
+    dragonSlayer.goToBattle();
+    
+    // Green dragon spotted ahead!
+    // With your Excalibur you sever the dragon's head!
+    // Red dragon emerges.
+    // You shoot the dragon with the magical crossbow and it falls dead on the ground!
+    // Black dragon lands before you.
+    // You cast the spell of disintegration and the dragon vaporizes in a pile of dust!    
+```
+
+## 类图
+![alt text](../../strategy/etc/strategy_1.png "Strategy")
+
+## 应用
+使用策略模式当
+
+* 许多相关的类只是行为不同。策略模式提供了一种为一种类配置多种行为的能力。
+* 你需要一种算法的不同变体。比如，你可能定义反应不用时间空间权衡的算法。当这些算法的变体使用类的层次结构来实现时就可以使用策略模式。
+* 一个算法使用的数据客户不应该对其知晓。使用策略模式来避免暴露复杂的，特定于算法的数据结构。
+* 一个类定义了许多行为，这些行为在其操作中展现为多个条件语句。移动相关的条件分支到它们分别的策略类中来代替这些条件语句。
+
+## 教学
+
+* [Strategy Pattern Tutorial](https://www.journaldev.com/1754/strategy-design-pattern-in-java-example-tutorial)
+
+## 鸣谢
+
+* [Design Patterns: Elements of Reusable Object-Oriented Software](https://www.amazon.com/gp/product/0201633612/ref=as_li_tl?ie=UTF8&camp=1789&creative=9325&creativeASIN=0201633612&linkCode=as2&tag=javadesignpat-20&linkId=675d49790ce11db99d90bde47f1aeb59)
+* [Functional Programming in Java: Harnessing the Power of Java 8 Lambda Expressions](https://www.amazon.com/gp/product/1937785467/ref=as_li_tl?ie=UTF8&camp=1789&creative=9325&creativeASIN=1937785467&linkCode=as2&tag=javadesignpat-20&linkId=7e4e2fb7a141631491534255252fd08b)
+* [Head First Design Patterns: A Brain-Friendly Guide](https://www.amazon.com/gp/product/0596007124/ref=as_li_tl?ie=UTF8&camp=1789&creative=9325&creativeASIN=0596007124&linkCode=as2&tag=javadesignpat-20&linkId=6b8b6eea86021af6c8e3cd3fc382cb5b)
+* [Refactoring to Patterns](https://www.amazon.com/gp/product/0321213351/ref=as_li_tl?ie=UTF8&camp=1789&creative=9325&creativeASIN=0321213351&linkCode=as2&tag=javadesignpat-20&linkId=2a76fcb387234bc71b1c61150b3cc3a7)