Describe in English what func does, and what is guaranteed to be true (or not) after it runs. Don't just narrate the code; your description should be suitable for use in documentation. Analyse the function using your knowledge of vector and information you can find in STL library documentation. Using big-O notation, give the complexity of each marked line of code and of the method as a whole; on the five marked lines, say what it is that's taking up time and why it takes up the amount of time you specify, and for the function overall include a

Write a program in C that, given two points on a two-dimensional graph, outputs a message (string) if the line that connects them is horizontal or vertical, or if the slope is positive or negative.What would you modify or adjust in your code if we move from a 2D cartesian system to a 3D dimensional cartesian system?You need to take into consideration if the system is 3D and therefore you need to ask the user to insert X, Y , and Z.

Describe an efficient way of putting a VECTOR rep­resenting a deck of n cards into random order in C++. You may use the function randomlnt(n), which returns a random number between 0 and n-1, inclusive. Your method should guarantee that every possible ordering is equally likely. What is the run­ning time of your function?

PYTHON Code your own Python function to solve Ax=b. Add a documentation string section to be used with the Python function help() function. Demonstrate the function is correctly implemented, and explain your testing approach.