Math

Primers

Examples

Binary Representation

Sample Question

Math Problems

Adhoc

Problem	Score	Companies	Time	Status
Total Moves For Bishop!	75	Goldman Sachs	31:04
Distribute in Circle!	100	Goldman Sachs	21:40
Prime Sum	150	Epic systems	43:15
Sum of pairwise Hamming Distance	200		66:52
FizzBuzz	200		12:34
Is Rectangle?	200	Booking.com	11:26
Step by Step	200	toppr	51:06
Power Of Two Integers	250	Housing Amazon	39:36

Base conversion

Problem	Score	Companies	Time	Status
Excel Column Number	175	Amazon	23:19
Excel Column Title	175	Amazon	41:11

Digit op

Problem	Score	Companies	Time	Status
Palindrome Integer	200	HCL	17:28
Reverse integer	200	HCL Bloomberg	28:36
Next Smallest Palindrome!	400	grofers	61:09

Number theory

Problem	Score	Companies	Time	Status
Greatest Common Divisor	200	NetApp TCS	10:57
Find Nth Fibonacci	200	Deloitte	53:09
Divisible by 60	200	Flipkart	25:31
Powerful Divisors	200	lenskart	41:31
Trailing Zeros in Factorial	250	Jabong Zillow	18:58
Sorted Permutation Rank	250	Housing Zenefits	78:25
Largest Coprime Divisor	250		49:29
Sorted Permutation Rank with Repeats	500	Housing Zenefits	67:53

Combinatorics

Problem	Score	Companies	Time	Status
K-th Permutation	200	Amazon	52:21
City Tour	300		61:40
Grid Unique Paths	375	Amazon Adobe	32:35

Hash search

Problem	Score	Companies	Time	Status
Highest Score	200	Goldman Sachs	30:12

Bit play

Problem	Score	Companies	Time	Status
Addition without Summation	200	Adobe	22:50

Number encoding

Problem	Score	Companies	Time	Status
Next Similar Number	200	Amazon	55:17
Rearrange Array	250		49:03

Array dp

Problem	Score	Companies	Time	Status
Numbers of length N and value less than K	200		89:59

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