WhiteBox
Problems
Core Catalog
Real interview problems not on LeetCode
Algorithms
Roadmap, collections, and the dan ladder
Domain Knowledge
Quiz yourself
Library
Curated resources, tier lists, and problem sets
Guides
Real takes worth your time reading
NEW
White Room
NEW
Community
Leaderboard
See top WhiteBox performers
Refer & Earn
Get your friends on WhiteBox
NEW
Shop
Customize your profile
Contributors
Meet the team behind WhiteBox
Changelog
See what's new on WhiteBox
Tools
Interview Intel
Questions pulled from real interviews
Resume Reviewer
Embellish yourself
Job Board
Land your dream job
Mock Interview
Friends always busy? We got you.
Login
Login
Problems
White Room
NEW
Community
Tools
Back to Problems
Previous
Question 410
Next
Random
What is phase kickback?
What is phase kickback in quantum computing?
Sign in to answer questions and track your progress
Sign In