Bit Manipulation is a collection of techniques that allows us to solve various problems by leveraging the binary representation of a number and its bits.
It’s very normal for a programmer to work on data types or data structure which stores large amounts of data in bytes. But sometimes it's necessary for a programmer to dive very deep to understand the real importance of bits.
Bitwise operations are faster and can sometimes optimize the program really well.
Bit Manipulation has a lot of real world applications too. It’s heavily used for Encryptions like Exclusive-Or Encryption and Data compressions. In both of these we have to extract the data at a bit level.
Yes. The interviewer might not ask direct questions on bit manipulation but can ask problems which are related to bit manipulation like bitmask dp , number of subsets etc.
Also if the interviewer wants to check the basics he might ask you a lot of questions on this topic, Especially the functions of bitwise operators.
Problem | Score | Companies | Time | Status |
---|---|---|---|---|
Number of 1 Bits | 200 |
|
8:47 | |
Trailing Zeroes | 200 |
|
14:57 | |
Reverse Bits | 225 |
|
23:50 | |
Divide Integers | 250 |
|
68:08 | |
Different Bits Sum Pairwise | 300 |
|
51:30 |
Problem | Score | Companies | Time | Status |
---|---|---|---|---|
Min XOR value | 200 |
|
37:42 | |
Count Total Set Bits | 200 |
|
65:30 | |
Palindromic Binary Representation | 200 |
|
63:52 | |
XOR-ing the Subarrays! | 200 |
|
34:22 |
Problem | Score | Companies | Time | Status |
---|---|---|---|---|
Single Number | 275 |
|
11:53 | |
Single Number II | 275 |
|
39:22 |