OOP Problems to use for Coding Tests during interviews

Question

As a second interview I get people to sit down and write code...I try to make the problem really technology independent.

My programming problems that I have don\'t reall

Answer 1

I've got a super simple set. The idea is mainly to use them to filter out people who really don't know their stuff rather than filtering in the rock stars.

These are all 5 minute white-board type questions, so they are really not that hard. But the act of writing up code, and talking through it reveals a lot about a candidate - and is brilliant for exposing those that can otherwise BS through the talk.

• Write a method that takes a radius of a circle as an argument, and returns the area of the circle (You would be amazed how many people struggle on this one!)
• Write a program that accepts a series of numbers as arguments from the command line. Add them up, and print the sum
• Write a class that acts as a keyed counter (basically a map that keeps track of how many times each key is "counted")