Checking your account, lessons, and saved progress.
The server is starting after a long break. This first cold start may take
5–10 seconds
Check kth bit is set or not: step-by-step visual explanation
Learn the Check kth bit is set or not problem with a step-by-step DSA animation. Follow the Basic Bit Operations solution with synced C#, Python, and Java code.
Basic Bit Operations pattern
AND reads selected bits, OR turns them on, XOR flips them, and shifts move the bit pattern left or right.
Difficulty: Easy · Approach: Read binary switches
This is a public lesson preview. Sign in with a Lifetime Pass to open the protected animation, solution, and code.