In this problem, you will fill out three functions to complete the Group ADT and the Diner ADT. The goal is to organize how diners manage the groups that want to eat there and the tables where these groups sit.It is important to take the time to read through the docstrings and the doctests. Additionally, make sure to not violate abstraction barriers for other ADTs, i.e. when implementing functions for the Diner ADT, do not violate abstraction barriers for the Group ADT, and vice versa.### Diner ADT```pythondef make_diner(name): """ Diners are represented by their name and the number of free tables they have.""" return [name, 0]def num_free_tables(diner): return diner[1]def name(diner): return diner[0]# You will implement add_table and serve which are part of the Diner ADT```### Group ADT```pythondef make_group(name): """ Groups are represented by their name and their status.""" return [name, 'waiting']def name(group): return group[0]def status(group): return group[1]def start_eating(group, diner): group[1] = 'eating'# You will implement finish_eating which is part of the Group ADT``` ```pythondef finish_eating(group, diner): """ >>> din = make_diner("Foothill") >>> add_table(din) >>> g1 = make_group("Nick's Group") >>> serve(din, g1) >>> num_free_tables(din) 0 >>> finish_eating(g1, din) >>> num_free_tables(din) 1 >>> status(g1) 'finished' >>> finish_eating(g1, din) # g1 has already finished eating so this should do nothing >>> num_free_tables(din) 1 >>> status(g1) 'finished' """ # *** YOUR CODE HERE ***```**Explanation:**The function `finish_eating(group, diner)` is designed to set a group's status to 'finished' and free the table they were using, which allows the diner to have one more free table. If the status of the group is already 'finished', the function does nothing. This function is a part of the Group Abstract Data Type (ADT).**Example Usage:**1. A diner named "Foothill" is created.2. A table is added to this diner.3. A group named "Nick's Group" is created and served at the diner.4. The number of free tables is initially zero after the group has been served.5. After calling `finish_eating(g1, din)`, the number of free tables increases to one, and the group's status is set to 'finished'.6. Re-calling `finish_eating(g1, din)` has no effect since the group's status is already 'finished'; thus, the number of free tables remains one.

In this problem you will fill out three functions to complete the Group ADT and the Diner ADT. The goal is to organize how diners manage the groups that want to eat there and the tables where these groups sit. It is important to take the time to read through the docstrings and the doctests. Additionally, make sure to not violate abstraction barriers for other ADTS, i.e. when implementing functions for the Diner ADT, do not violate abstraction barriers for the Group ADT, and vice versa. # Diner ADT def make_diner (name): "*" Diners are represented by their name and the number of free tables they have.""" return [name, 0] def num_free_tables (diner): return diner [1] def name (diner): return diner [0] # You will implement add_table and serve which are part of the Diner ADT # Group ADT def make_group (name): "Groups are represented by their name and their status.""* return [name, 'waiting'] def name (group): return group [0] def status (group): return group [1] def start_eating (group, diner): group [1] = 'eating' # You will implement finish_eating which is part of the Group ADT M

In this problem you will fill out three functions to complete the Group ADT and the Diner ADT. The goal is to organize how diners manage the groups that want to eat there and the tables where these groups sit. It is important to take the time to read through the docstrings and the doctests. Additionally, make sure to not violate abstraction barriers for other ADTS, i.e. when implementing functions for the Diner ADT, do not violate abstraction barriers for the Group ADT, and vice versa. # Diner ADT def make_diner (name): "" Diners are represented by their name and the number of free tables they have.""" return [name, 0] def num_free_tables (diner): return diner [1] def name (diner): return diner [0] # You will implement add_table and serve which are part of the Diner ADT # Group ADT def make_group (name): "Groups are represented by their name and their status."" return [name, 'waiting'] def name (group): return group [0] def status (group): return group [1] def start_eating (group, diner): group [1] = 'eating' # You will implement finish_eating which is part of the Group ADT M

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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In this problem, you will fill out three functions to complete the Group ADT and the Diner ADT. The goal is to organize how diners manage the groups that want to eat there and the tables where these groups sit.

It is important to take the time to read through the docstrings and the doctests. Additionally, make sure to not violate abstraction barriers for other ADTs, i.e. when implementing functions for the Diner ADT, do not violate abstraction barriers for the Group ADT, and vice versa.

### Diner ADT
```python
def make_diner(name):
""" Diners are represented by their name and the number of free tables they have."""
return [name, 0]

def num_free_tables(diner):
return diner[1]

def name(diner):
return diner[0]
# You will implement add_table and serve which are part of the Diner ADT
```

### Group ADT
```python
def make_group(name):
""" Groups are represented by their name and their status."""
return [name, 'waiting']

def name(group):
return group[0]

def status(group):
return group[1]

def start_eating(group, diner):
group[1] = 'eating'
# You will implement finish_eating which is part of the Group ADT
```

```python
def finish_eating(group, diner):
"""
>>> din = make_diner("Foothill")
>>> add_table(din)
>>> g1 = make_group("Nick's Group")
>>> serve(din, g1)
>>> num_free_tables(din)
0
>>> finish_eating(g1, din)
>>> num_free_tables(din)
1
>>> status(g1)
'finished'
>>> finish_eating(g1, din) # g1 has already finished eating so this should do nothing
>>> num_free_tables(din)
1
>>> status(g1)
'finished'
"""
# *** YOUR CODE HERE ***
```

**Explanation:**

The function `finish_eating(group, diner)` is designed to set a group's status to 'finished' and free the table they were using, which allows the diner to have one more free table. If the status of the group is already 'finished', the function does nothing. This function is a part of the Group Abstract Data Type (ADT).

**Example Usage:**

1. A diner named "Foothill" is created.
2. A table is added to this diner.
3. A group named "Nick's Group" is created and served at the diner.
4. The number of free tables is initially zero after the group has been served.
5. After calling `finish_eating(g1, din)`, the number of free tables increases to one, and the group's status is set to 'finished'.
6. Re-calling `finish_eating(g1, din)` has no effect since the group's status is already 'finished'; thus, the number of free tables remains one.

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