使用多重条件对数据进行排序：Java教程

import java.util.Scanner;  public class MultiCriteriasort {      public static void main(String[] args) {         Scanner sc = new Scanner(System.in);          System.out.println("请输入两个排序条件（用空格分隔，例如：1 2）：");         String userInput = sc.nextLine();          String[] userInputs = userInput.split(" ");          if (userInputs.Length != 2) {             System.out.println("请输入两个排序条件，用空格分隔。");             return; // 结束程序         }          int condition1;         int condition2;          try {             condition1 = Integer.parseInt(userInputs[0]);             condition2 = Integer.parseInt(userInputs[1]);         } catch (NumberFormatException e) {             System.out.println("输入的排序条件必须是数字。");             return; // 结束程序         }          // 后续的排序逻辑将基于 condition1 和 condition2 进行         System.out.println("您选择的排序条件是：" + condition1 + " 和 " + condition2);          // 关闭 Scanner         sc.close();     } }

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import java.util.ArrayList; import java.util.Comparator; import java.util.List; import java.util.Scanner;  public class MultiCriteriaSort {      public static void main(String[] args) {         Scanner sc = new Scanner(System.in);          System.out.println("请输入两个排序条件（用空格分隔，例如：1 2）：");         System.out.println("""                 1. Sort by name.                 2. Sort by height.                 3. Sort by power(s).                 4. Sort by weakness(ess).                 5. Sort by origin FROM earth.                 6. Sort by origin NOT from earth.                 """);         String userInput = sc.nextLine();          String[] userInputs = userInput.split(" ");          if (userInputs.length != 2) {             System.out.println("请输入两个排序条件，用空格分隔。");             return; // 结束程序         }          int condition1;         int condition2;          try {             condition1 = Integer.parseInt(userInputs[0]);             condition2 = Integer.parseInt(userInputs[1]);         } catch (NumberFormatException e) {             System.out.println("输入的排序条件必须是数字。");             return; // 结束程序         }          // 假设我们有一个 Superhero 列表         List<Superhero> superheroes = new ArrayList<>();         superheroes.add(new Superhero("Superman", 190, 100, "Kryptonite", true));         superheroes.add(new Superhero("Batman", 180, 50, "None", false));         superheroes.add(new Superhero("Spiderman", 175, 75, "None", true));         superheroes.add(new Superhero("Wonder Woman", 185, 90, "None", true));          // 使用 Comparator 进行多重排序         superheroes.sort(getComparator(condition1).thenComparing(getComparator(condition2)));          // 打印排序后的结果         System.out.println("排序后的 Superhero 列表：");         for (Superhero superhero : superheroes) {             System.out.println(superhero);         }          // 关闭 Scanner         sc.close();     }      // 根据排序条件返回相应的 Comparator     private static Comparator<Superhero> getComparator(int condition) {         switch (condition) {             case 1: // Sort by name                 return Comparator.comparing(Superhero::getName);             case 2: // Sort by height                 return Comparator.comparingInt(Superhero::getHeight);             case 3: // Sort by power                 return Comparator.comparingInt(Superhero::getPower);             case 4: // Sort by weakness                 return Comparator.comparing(Superhero::getWeakness);             case 5: // Sort by origin FROM earth                 return Comparator.comparing(Superhero::isFromEarth).reversed(); // True first             case 6: // Sort by origin NOT from earth                 return Comparator.comparing(Superhero::isFromEarth); // False first             default:                 return Comparator.comparing(Superhero::getName); // 默认按名字排序         }     } }  // Superhero 类 class Superhero {     private String name;     private int height;     private int power;     private String weakness;     private boolean fromEarth;      public Superhero(String name, int height, int power, String weakness, boolean fromEarth) {         this.name = name;         this.height = height;         this.power = power;         this.weakness = weakness;         this.fromEarth = fromEarth;     }      // Getters     public String getName() {         return name;     }      public int getHeight() {         return height;     }      public int getPower() {         return power;     }      public String getWeakness() {         return weakness;     }      public boolean isFromEarth() {         return fromEarth;     }      @Override     public String toString() {         return "Superhero{" +                 "name='" + name + ''' +                 ", height=" + height +                 ", power=" + power +                 ", weakness='" + weakness + ''' +                 ", fromEarth=" + fromEarth +                 '}';     } }

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