It will be a combination of things. Make sure you are getting enough sleep and exercise. Pretty mind boggling that they are still asking brain teasers in int

It will be a combination of things. Make sure you are getting enough sleep and exercise. Pretty mind boggling that they are still asking brain teasers in interviews. If that is the type of question they are asking you can practice brain teaser and consulting type questions before an interview to. Have a good grasp of the fundamentals of any subject matter before an interview. Practice is key. Outside of that apply the concept of katas daily (http://codekata.com http://codekata.com)