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  scu09156146  commented on May 14, 2024, 12:34 p.m.

  題解

  import java.util.HashMap;
  import java.util.Scanner;
  
  public class SearchClassroom {
  
      public static void main(String[] args) {
          HashMap<String, String> classrooms = new HashMap<>();
          Scanner scanner = new Scanner(System.in);
  
          // 記錄三筆資料(課堂名稱, 教室代號)
          for (int i = 0; i < 3; i++) {
              String className = scanner.next();
              String roomCode = scanner.next();
              // Add to the HashMap
              // Key = className, Value = roomCode
              classrooms.put(className, roomCode);
          }
  
          // 要查詢的課堂名稱(Key)
          String searchClass = scanner.next();
          scanner.close();
  
          // 檢查HashMap裡是否包憨要查詢的課堂名稱(Key)
          if (classrooms.containsKey(searchClass)) {
              // 根據Key取得Value
              String roomCode = classrooms.get(searchClass);
              System.out.println("Classroom for " + searchClass + ": " + roomCode);
          } else {
              System.out.println("Class not found.");
          }
  
      }
  
  }