By using while loop OR do..while loop, write a program that displays a list of groceries. Then, allow user to insert number of product that they want to buy, the item's code and quantity for each item. Finally, display the total price that the user needs to pay. Valid input for the number of product and quantity is positive number. Meanwhile valid number for items' code is only from 1 to 4.

Write a do.. while loop that keeps asking the user to enter a positive number until they do enter a positive number.

Consider the following program that contains a nested loop. j = while j> 0 : k = 0 while print("#", k = k + 1 print() j = j - 1 end Complete the program so that it prints the following 6 lines exactly:

Write a program that prompts the user to enter the number of students and each student's name and score, and finally displays the student with the highest score and the student with the second-highest Score. Assume that the number of students is at least 2. Sample Run Enter the number of students: 5 Enter a student name: Smith Enter a student score: 60 Enter a student name: Jones Enter a student score: 96 Enter a student name: Peterson Enter a student score: 85 Enter a student name: Greenlaw Enter a student score: 98 Enter a student name: Zhang Enter a student score: 95 Top two students:

Part A: Create a program that prompts the user to input the retail price of an item. Next, prompt them to enter the current discount for the item as a percentage. Then, output the new price with discount applied. A sample program run follows: enter the retail price : 55.75 enter the discount ( as a percentage ) : 12 the discounted price is 49.06 Part B: Create a program that prompts the user to input 4 quiz scores, then outputs the average of the scores. Be sure to format your output to display 1 place after the decimal.

Write a program that asks a user to input the height of triangle and draw a triangle that has the following pattern. Use nested loops for this problem. If the user enter height as 4 Then the triangle output is 1 1 2 1 2 3 1 2 3 4 We make the following assumptions • There is no space between the margin and first number in each row • There could be a space after the last number on every line • There is pne space between numbers on every line • There maybe a newline at the end of last line There is one test-case to check your code, there are two hidden testcases that tests correctness of your code 376584 2469

Code should be in Python.   Prompt the user to enter a string of their choosing. Output the string.Ex: Enter a sentence or phrase: The only thing we have to fear is fear itself. You entered: The only thing we have to fear is fear itself. Complete the get_num_of_characters() function, which returns the number of characters in the user's string. We encourage you to use a for loop in this function. Extend the program by calling the get_num_of_characters() function and then output the returned result. Extend the program further by implementing the output_without_whitespace() function. output_without_whitespace() outputs the string's characters except for whitespace (spaces, tabs). Note: A tab is '\t'. Call the output_without_whitespace() function in main().Ex: Enter a sentence or phrase: The only thing we have to fear is fear itself. You entered: The only thing we have to fear is fear itself. Number of characters: 46 String with no whitespace: Theonlythingwehavetofearisfearitself.

Transient PopulationPopulations are affected by the birth and death rate, as well as the number of people who move in and out each year. The birth rate is the percentage increase of the population due to births and the death rate is the percentage decrease of the population due to deaths. Write a program that displays the size of a population for any number of years. The program should ask for the following data: The starting size of a population P The annual birth rate (as a percentage of the population expressed as a fraction in decimal form)B The annual death rate (as a percentage of the population expressed as a fraction in decimal form)D The average annual number of people who have arrived A The average annual number of people who have moved away M The number of years to display nYears Write a function that calculates the size of the population after a year. To calculate the new population after one year, this function should use the formulaN = P + BP - DP + A - Mwhere N is the…

Write a complete program to generate a username based on a user's first and last name.  Part One: Get a Valid First and Last Name  ask the user for and read in their first and last name use a loop to validate the first name: it must be at least one character long and it must start with a letter use a loop to validate the last name: it must not contain any spaces Hint: use a nested loop. The outer loop will iterate until there is valid input. The inner loop will check each character in the String to see if any of them are whitespace. Part Two: Generate a Username  generate a two-digit random number (i.e., a random number between 10 and 99, inclusive) create a username that is the following data concatenated: the first letter of their first name in lower case the first five characters of their last name in lower case; if the name is shorter than five characters, use the whole last name the two-digit number output the username to the user Additional Coding Requirements  code…

Write the part of the program that searches for the name of the coffee add-in(s) and either prints the name and price of the add-in or prints the error message if the add-in is not found. Comments in the code tell you where to write the statements. Write the code that searches the list for the name of the add-in ordered by the customer. Write the code that prints the name and price of the add-in or the error message, and then write the code that prints the cost of the total order. Execute the program using the following data and verify that the output is correct: Cream Caramel Whiskey chocolate Chocolate Cinnamon Vanilla     # JumpinJava.py - This program looks up and prints the names and prices of coffee orders.   # Input:  Interactive # Output:  Name and price of coffee orders or error message if add-in is not found    # Declare variables. NUM_ITEMS = 5 # Named constant   # Initialized list of add-ins addIns = ["Cream", "Cinnamon", "Chocolate", "Amaretto", "Whiskey"]   #…