Interview problems from:

• Books:

  • Elements of Programming Interviews
  • Cracking the Coding Interview
  • Quant Job Interview Questions & Answers
  • Programming Interviews Exposed

• Websites:

  • codility.com and solutions
  • glassdoor.com
  • careercup.com
  • leetcode.com

• Real interviews with:

  • Google
  • Yahoo
  • Microsoft
  • Microsoft Research
  • IBM
  • IBM Research
  • Amazon
  • Twitter
  • JP Morgan
  • Goldman Sachs
  • and one more...