View All num of num See all Photos Citi This employer has taken extra steps to respond to reviews and provide job seekers with accurate company information, photos, and reviews. Interested for your company?Learn More. www.citigroup.com Employer Engaged Overview Reviews Salaries Interviews Jobs Photos Benefits 3.1k Reviews 6.3k Salaries 1.0k Interviews 5.8k Jobs Follow Add Review or Salary Follow Add Review or Salary Interview Question Senior Software Developer Interview New York, NY Citi 1.Please give algorithm to sort given nos. from 1 to n , with O(1) binary notation 2.Explain the internal implementation of hash map. 3.Caching Tags: See more , See less 8 Answer Add Tags Answer Add Answers or Comments To comment on this, Sign In or Sign Up.