- a.
Explanation of Solution
List method “index()”:
- • “index()” method in Python finds an element in the list and outputs the element’s index.
- • This method is useful in finding the position of the given element in the list.
- • The “index()” method takes an element as an input and searches the list for that element appearance and outputs its position.
- • If more than one occurrence of the element is present in the list, then the method outputs the lowest index.
- • If the element is not present in the list, then this method raises a “ValueError” exception.
Syntax:
In Python, “index()” has the following syntax,
element_index = List_name.index(element)
Explanation:
In the above code,
- • The variable “element_index” stores the return value from the “insert()” method.
- • The variable “List_name” represents the name of the list.
- • The variable “element” indicates the element that is going to be searched in the list.
Example program:
Consider the following example that demonstrates the “index()” method...
- b.
Explanation of Solution
List method “insert()”:
- • The “insert()” method in Python adds an element to the list.
- • This method places an element in the list at a given index.
- • This method takes an element and its position as input parameters and places the given element at the indicated position.
- • When the element is inserted in the list, the list size is increased to hold the given element.
- • The element at the current index and the elements following it are moved by one place to the list end.
- • This method never throws an exception even if the index is not a valid value.
- • If the index value that is greater than the list size is specified as element’s position, then this method inserts the element at the list end.
- • If the index value is negative and it indicates an invalid position, then this method places the element at the list beginning.
Syntax:
In Python, “insert()” has the following syntax,
List_name.insert(element_index, element)
Explanation:
In the above code,
- • The variable “List_name” represents the name of the list.
- • The variable “element_index” indicates the position where the “element” to be inserted in the list.
- • The variable “element” indicates the element that is going to be inserted in the list.
Example program:
Consider the following example that demonstrates the “insert()” method...
- c.
Explanation of Solution
List method “sort()”:
- • “sort()” method sorts the list elements.
- • This method arranges the elements in the list in the ascending order.
- • So that the elements in the list are arranged from lower to higher values.
- • This method does not receive any input and does not return a value.
Syntax:
In Python, “sort()” has the following syntax,
List_name.sort()
Explanation:
In the above code,
- • The variable “List_name” represents the list name that is to be sorted.
Example program:
Consider the following example that demonstrates the “sort()” method.
#Function definition
def main():
#Create a list to store the names
mynames_list = ['John', 'Tom', 'David', 'Kim']
#Print message to the user
;&#x...
- d.
Explanation of Solution
List method “reverse()”:
- • “reverse()” method reverses the list elements.
- • This method changes the elements’ orders in the list.
- • So that the list contains the elements in reverse order.
- • This method does not obtain any input and does not output a value.
Syntax:
In Python, “reverse()” has the following syntax,
List_name.reverse()
Explanation:
In the above code,
- • The variable “List_name” represents the list name that is to be reversed.
Example program:
Consider the following example that demonstrates the “reverse()” method.
#Function definition
def main():
#Create a list to store the numbers
mynumbers_list = [1, 15, 11, 21, 12]
#Print message to the user
print('The numbers list before r...
Want to see the full answer?
Check out a sample textbook solutionChapter 7 Solutions
Starting Out with Python (4th Edition)
- An array index should normally be of type float. State whether the statement is true or false. If false, explain why.arrow_forward2- The factorial n! of a positive integer n is defined as n! = 1*2*3 . .. * (n-1) * n Where 0! = 1 Write a function to calculate the factorial of a number. Argument: A number n of type unsigned int. Returns: The factorial n! of type long double. Write two versions of the function, where the factorial is • calculated using a loop calculated recursively Test both functions by outputting the factorials of the numbers 0 to 20.arrow_forwardC: Use ARRAY and LOOPSarrow_forward
- Code in Python: Question 2: Write a Python program in which you will invert the logic of Selection-Sort (means select Max-value in each iteration and sort in right to left direction)arrow_forwardWrite a recursive function named “oddRec” that takes the address of the array and the number of elements as a parameter and returns the number of odd numbers in the array. (Do not use global variable)arrow_forwardUsing “Def” keyword write a function that returns the mean element of the given array elements (The function name will be MeanofArrayElements) Not: Write some print functions to see the outputs inside each function. (Python programming language)arrow_forward
- Using “Def” keyword write a function that sorts the given array (The function name will be SortArray) Not: Write some print functions to see the outputs inside each function. (python programming language)arrow_forwardPlease do not give solution in image format thanku Create a test program that creates 4 array lists. Make use of the random function and place 8 (matching/pairs of) different int values in the four lists. Remember the objective of the game is to find matching pairs so you must make sure that each value you enter has got another matching value. But it will also create problems if a value is entered more than 2 times in the 4 lists. Hint make use of getCount. (10) Test the methods created and the working of the placement of the default values.arrow_forwardCREATE A PROGRAM WITHOUT USING Array. Use For Looparrow_forward
- 5- Write a python program that takes 5 positive integers from the user and prints the list after removing even numbers from that list. (Don't use built-in functions)arrow_forwardC: Array & Looparrow_forwardCodeWorkout Gym Course Search exercises... Q Search kola shreya@colum X459: Review- Fibonacci In mathematics, the Fibonacci numbers are the numbers in the following integer sequence, characterized by the fact that every number after the first two is the sum of the two preceding ones: e, 1, 1, 2, 3, 5, 8, 13, Write a recursive function that the returns the nth fibonacci number. Examples: fibonacci(0) -> 0 fibonacci(1) -> 1 fibonacci(7) -> 13 Your Answer: 1 public int fibonacci(int n) { 2 3} 4 CodeWorkout © Virginia Tech About License Privacy Contactarrow_forward
- Database System ConceptsComputer ScienceISBN:9780078022159Author:Abraham Silberschatz Professor, Henry F. Korth, S. SudarshanPublisher:McGraw-Hill EducationStarting Out with Python (4th Edition)Computer ScienceISBN:9780134444321Author:Tony GaddisPublisher:PEARSONDigital Fundamentals (11th Edition)Computer ScienceISBN:9780132737968Author:Thomas L. FloydPublisher:PEARSON
- C How to Program (8th Edition)Computer ScienceISBN:9780133976892Author:Paul J. Deitel, Harvey DeitelPublisher:PEARSONDatabase Systems: Design, Implementation, & Manag...Computer ScienceISBN:9781337627900Author:Carlos Coronel, Steven MorrisPublisher:Cengage LearningProgrammable Logic ControllersComputer ScienceISBN:9780073373843Author:Frank D. PetruzellaPublisher:McGraw-Hill Education