Level 2

Math

Important tutorials

1. Math Introduction

2. Factorization

3. Base Number System

4. Unary Number System

5. Binary Number System

6. Base Conversions For Base N

Primers

Examples

Binary Representation

Sample Question

Math Problems

Adhoc

Problem	Score	Companies	Time	Status
Total Moves For Bishop!	75	Goldman Sachs	29:05
Distribute in Circle!	100	Goldman Sachs	20:19
Prime Sum	150	Epic systems	43:15
Sum of pairwise Hamming Distance	200		66:51
FizzBuzz	200		12:34
Is Rectangle?	200	Booking.com	10:29
Step by Step	200	toppr	44:28
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	52:03

Number theory

Problem	Score	Companies	Time	Status
Greatest Common Divisor	200	NetApp	10:57
Find Nth Fibonacci	200		47:58
Trailing Zeros in Factorial	250	Jabong Zillow	18:58
Sorted Permutation Rank	250	Housing Zenefits	78:02
Largest Coprime Divisor	250		49:13
Sorted Permutation Rank with Repeats	500	Housing Zenefits	66:03

Number encoding

Problem	Score	Companies	Time	Status
Next Similar Number	200	Amazon	52:48
Rearrange Array	250		49:03

Array dp

Problem	Score	Companies	Time	Status
Numbers of length N and value less than K	200		89:45

Combinatorics

Problem	Score	Companies	Time	Status
City Tour	300		59:23
Grid Unique Paths	375	Amazon Adobe	32:35

Additional Practice

Problem	Score	Companies	Time	Status
K-th Permutation	300	Amazon	58:34
Divisible by 60	300	Flipkart	17:33
Powerful Divisors	300	lenskart	47:00
Addition without Summation	200	Adobe	12:02
Highest Score	300	Goldman Sachs	28:55