write a program that inserts parentheses, a space, and a dash into a string of 10 user-entered numbers to format it as a phone number. for example 5555555555 becomes (555) 555-5555. If the user does not enter exactly 10 digits, display an error message. continue to accept user input until the user enters 999 using string builder.

You are given a string ternary_expr which represents a random nested ternary expression, you need to evaluate this expression, and report the result. Assumption can be as follows: ● ternary_expr only contains digits, ‘?’, ‘:’, ’T’, ‘F’ where ’T’ is true and ‘F’ is false. ● ternary_expr contains only one-digit numbers (i.e. in the range [0, 9]) The ternary expressions group right-to-left, and the result of the expression will always evaluate to either a digit, 'T' or 'F'. Requirements 1. Way of modeling the problem with the cost implications without using Stacks.

For this project, you will be writing regular expressions that look for and find all instances of a date in any given string. Your program should: Find the following different formats for dates: August 2nd, 1994 august 2, 1994  08/02/1994 08/02/94 08-02-1994 Your program should be case insensitive using re.IGNORECASE Your program can only have a maximum of two different regexes. A special prize goes to those of you who can fit all of this into one regex Your program should be able to tell if the date is a valid date. For example, if the date says 99/99/99, then your program should ignore this as a date. HINT: this is not done within the regex. Try saving your dates to something like a list and going through that list after your regex runs.  At the end of your program, it should print out all of the dates in the following format: mm/dd/yyyy. EX. 08/02/1994 Your program should use at least two character classes, you may need more. Feel free to make your own custom classes as well.…

Write a program that prompts the user for a month name and a month day. Your program will examine the month and the day to determine the season. Your program will then display the date's season (Winter, Spring, Summer or Autumn). The input is a string to represent the month and an int to represent the day. See chart below for the range of dates within seasons. Ex: If the input is: April 11 the output is: Spring The dates for each season in the northern hemisphere are:Spring: March 20 - June 20Summer: June 21 - September 21Autumn: September 22 - December 20Winter: December 21 - March 19