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Practice Zone Java
10 Topics 15 Questions All Difficulty
Topics
Questions
Bitwise AND of two numbers
Easy
Jan 23, 2026
Check odd using bit operator
Easy
Jan 23, 2026
Swap using XOR
Easy
Jan 23, 2026
Set k-th bit
Easy
Jan 23, 2026
Clear k-th bit
Easy
Jan 23, 2026
Toggle k-th bit
Medium
Jan 23, 2026
Extract lowest set bit
Medium
Jan 23, 2026
Count bits using Kernighan
Medium
Jan 23, 2026
Check if kth bit is set
Medium
Jan 23, 2026
Build mask between l..r
Medium
Jan 23, 2026
Reverse bits in 32-bit int
Hard
Jan 23, 2026
Find single number (others twice)
Hard
Jan 23, 2026
Find two single numbers
Hard
Jan 23, 2026
Subset check using bitmask
Hard
Jan 23, 2026
Compute parity bit
Hard
Jan 23, 2026