using this To implement this application, we can use a hash table to encode and decode messages using American Morse Code. A hash table is a good choice because it allows for fast lookups, which is essential for encoding and decoding messages in real$-$time.

Here's a high$-$level overview of how to implement the application:

Create a hash table to store the Morse Code mappings for each character.

Implement a method to read the input message from a file or the user interface.

Implement a method to encode the input message using the Morse Code hash table.

Implement a method to decode the Morse Code message using a binary search tree.

Display the encoded and decoded messages in the appropriate text boxes in the user interface.

Here's a more detailed explanation of each step:

Create a hash table to store the Morse Code mappings for each character.

We can create a hash table to store the Morse Code mappings for each character. The hash table can be implemented as a dictionary or a hash map, depending on the programming language used. The keys of the hash table will be the characters, and the values will be the corresponding Morse Code representations.

Implement a method to read the input message from a file or the user interface.

We can implement a method to read the input message from a file or the user interface. If the user selects a file, the method should read the contents of the file and store them in a string. If the user types in a message in the user interface, the method should retrieve the message from the text box.

Implement a method to encode the input message using the Morse Code hash table.

We can implement a method to encode the input message using the Morse Code hash table. The method should iterate through each character in the input message and look up its Morse Code representation in the hash table. If the character is not in the hash table, it should be left unchanged. The method should then concatenate the Morse Code representations with a space in between and display the encoded message in the Encoded Message text box.

Implement a method to decode the Morse Code message using a binary search tree.

We can implement a method to decode the Morse Code message using a binary search tree. The binary search tree should be implemented as a node$-$based data structure, where each node represents a Morse Code symbol $($either a dot or a dash$).$ The left child of each node represents a dot, and the right child represents a dash. The root node of the tree represents the start of a new character.

The method should iterate through each Morse Code symbol in the encoded message and traverse the binary search tree accordingly. If the symbol is a dot, the method should move to the left child of the current node. If the symbol is a dash, the method should move to the right child of the current node. If the current node has no children, the method should add the corresponding character to the decoded message and move back to the root node of the tree.

Display the encoded and decoded messages in the appropriate text boxes in the user interface.

We can display the encoded and decoded messages in the appropriate text boxes in the user interface. The Encoded Message text box should display the Morse Code representation of the input message, and the Decoded Message text box should display the decoded message. code the hash table and do not use dictionaries to build it$,$ build the hash table from scratch