Math

Primers

Examples

Binary Representation

Sample Question

Math Problems

Adhoc

Problem	Score	Companies	Time	Status
Total Moves For Bishop!	75	Goldman Sachs	30:55
Distribute in Circle!	100	Goldman Sachs	21:33
Prime Sum	150	Epic systems	43:15
Sum of pairwise Hamming Distance	200		66:52
FizzBuzz	200		12:34
Is Rectangle?	200	Booking.com	11:17
Step by Step	200	toppr	50:47
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	60:22

Number theory

Problem	Score	Companies	Time	Status
Greatest Common Divisor	200	NetApp TCS	10:57
Find Nth Fibonacci	200	Deloitte	52:47
Divisible by 60	200	Flipkart	24:07
Powerful Divisors	200	lenskart	49:40
Trailing Zeros in Factorial	250	Jabong Zillow	18:58
Sorted Permutation Rank	250	Housing Zenefits	78:24
Largest Coprime Divisor	250		49:27
Sorted Permutation Rank with Repeats	500	Housing Zenefits	67:48

Combinatorics

Problem	Score	Companies	Time	Status
K-th Permutation	200	Amazon	60:25
City Tour	300		61:35
Grid Unique Paths	375	Amazon Adobe	32:35

Hash search

Problem	Score	Companies	Time	Status
Highest Score	200	Goldman Sachs	28:02

Bit play

Problem	Score	Companies	Time	Status
Addition without Summation	200	Adobe	21:41

Number encoding

Problem	Score	Companies	Time	Status
Next Similar Number	200	Amazon	55:07
Rearrange Array	250		49:03

Array dp

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

Additional Practice

Problem	Score	Companies	Time	Status
Sum of 7's Multiple	200	Accenture	22:58
Find Last Digit	200	Accenture	29:54
Last digit K count	200	Accenture	23:42
Digital Root	200	Accenture	13:44
Number of Sundays	200	TCS	21:30
Product of Digits	150	TCS	9:46
Round Table	150	TCS	18:41
Odd Even Rule	150	TCS	11:20
Armstrong Number	200	TCS	13:05
Leap Year	100	TCS	9:14
Lowest Common Multiple (LCM)	100	Cognizant	18:14
Which Season?	100	Cognizant	9:59
Socks Pair	100	Wipro	15:05
Two Stores	150	Wipro	35:08

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