Write a method called expunge that accepts a stack of integers as a parameter and makes sure that the stack’s elements are in nondecreasing order from top to bottom, by removing from the stack any element that is smaller than any element(s) on top of it. For example, if the stack stores [4, 20, 15, 15, 8, 5, 7, 12, 3, 10, 5, 1], the element values 3, 7, 5, 8, and 4 should be removed because each has an element above it with a larger value. So your method should change the stack to store [20, 15, 15, 12, 10, 5, 1]. Notice that now the elements are in nondecreasing order from top to bottom. If the stack is empty or has just one element, nothing changes. Use one queue or stack (but not both) as auxiliary storag

Create a program that will take in a single x and y coordinate as the origin. after the input is provided, the output should be all of the coordinates (all 26 coordinates read from the “coordinates. json” file), in order of closest-to-farthest from the origin.

Hey i really need some solving this problem: 1. encrypt this binary string into cipher text: 110000. include in your answer the formula the decoder would use to decrypt your cipher text in the format (coded answer) x n mod (m) = y & 2. decrypt this cipher text into a binary string: 106 you.

Write a program that keeps asking the user for new values to be added to a list until the user enters 'exit' ('exit' should not be added to the list). these values entered by the user are added to a list we call 'initial_list'. then write a function that takes this initial_list as input and returns another list with 3 copies of every value in the initial_list. finally, inside print out all of the values in the new list. for example: input: enter value to be added to list: a enter value to be added to list: b enter value to be added to list: c enter value to be added to list: exit output: a b c a b c a b c note how 'exit' is not added to the list. also, your program needs to be able to handle any variation of 'exit' such as 'exit', 'exit' etc. and treat them all as 'exit'.