Suppose you are developing a data visualization application DataViz which calls some functions from a statistics library class SuperStats. You recently heard about another statistics library UberStats with supposedly significantly better performance than SuperStats. Explain how you would redesign the DataViz class using the Adapter pattern so that DataViz can be configured at runtime to use either SuperStats or UberStats. Does your design use dependency inversion and/or dependency injection? Explain

Write a method public static string getdigits(string phonenumber) that takes an 11-character phone number written with any combination of 11 uppercase letters, lowercase letters and/or digits, and zero or more hyphens, and which returns the digits that a person would have to press on a cell phone to dial that phone number. we will use the mapping of letters to digits given at en.wikipedia.org/wiki/telephone_keypad# /media/file: telephone-keypad2.svg you may assume that the string parameter phonenumber contains some combination of exactly 11 uppercase letters, lowercase letters and/or digits, but that any number of hyphens may be present. you can assume that a hyphen will not appear as the first or last character of the string. do not assum