Based on Problem P12.3 Write a function sort (list & lst) that sorts the elements of a (doubly) linked list int> (without copying them into a vector) . Write a program that reads the list of integers from the file datal.txt into a list and then sort the elements of the list using the function sort. . Submit the solution as hmw-6.1.cpp. Sample input-output -23 EN CAWindowssystem32cmd.exe Iterating through the list in datal.txt datal.txt - Notepad File Edit Format View Help 9 4 orted list: Press any key to continue . Ln 6, Col 2