Two-dimensional list: • A list that has another list as its elements is called as two-dimensional list. • Two-dimensional list is a type of nested list, where elements are arranged in row and column order. • The element in the list is retrieved using two subscripts. One subscript specifies the row and the other subscript specifies the column. • The two-dimensional lists are helpful in processing various sets of information. Syntax: In Python, two-dimensional lists have the below format: List_name = [list1,list2, …, listn] Explanation: Here, • The variable “List_name” is a two-dimensional list. • The variables “list1”, “list2”, and “listn” are elements of two-dimensional list “List_name” that indicates one-dimensional lists. Example: Consider the following example that shows a two-dimensional list. student_scores = [[45, 63, 72], [81, 58, 97], [100, 23, 67]] Explanation: In the given above code, • The variable “student_scores” is a two-dimensional list that stores the students’ scores at various exams.

Question

Write a program that lets the user enter numbersfrom a graphical user interface and displays them in a text area, as shownin Figure a. Use a linked list to store the numbers. Do not store duplicatenumbers. Add the buttons Sort, Shuffle, and Reverse to sort, shuffle, andreverse the list.

Answer 1

Question

Chapter 7.8, Problem 19CP

Program Plan Intro

Two-dimensional list:

• A list that has another list as its elements is called as two-dimensional list.

• Two-dimensional list is a type of nested list, where elements are arranged in row and column order.

• The element in the list is retrieved using two subscripts. One subscript specifies the row and the other subscript specifies the column.

• The two-dimensional lists are helpful in processing various sets of information.

Syntax:

In Python, two-dimensional lists have the below format:

List_name = [list1,list2, …, listn]

Explanation:

Here,

• The variable “List_name” is a two-dimensional list.

• The variables “list1”, “list2”, and “listn” are elements of two-dimensional list “List_name” that indicates one-dimensional lists.

Example:

Consider the following example that shows a two-dimensional list.

student_scores = [[45, 63, 72], [81, 58, 97], [100, 23, 67]]

Explanation:

In the given above code,

• The variable “student_scores” is a two-dimensional list that stores the students’ scores at various exams.

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