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
Prime Sum	150	Epic systems	43:15
Sum of pairwise Hamming Distance	200		66:36
FizzBuzz	200		12:34
Is Rectangle?	200	Booking.com	10:10
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

Number theory

Problem	Score	Companies	Time	Status
Greatest Common Divisor	200	NetApp	10:57
Find Nth Fibonacci	200		42:28
Trailing Zeros in Factorial	250	Jabong Zillow	18:58
Sorted Permutation Rank	250	Housing Zenefits	77:23
Largest Coprime Divisor	250		49:00
Sorted Permutation Rank with Repeats	500	Housing Zenefits	64:50

Number encoding

Problem	Score	Companies	Time	Status
Next Similar Number	200	Amazon	49:13
Rearrange Array	250		49:03

Array dp

Problem	Score	Companies	Time	Status
Numbers of length N and value less than K	200		89:22

Combinatorics

Problem	Score	Companies	Time	Status
City Tour	300		56:59
Grid Unique Paths	375	Amazon Adobe	32:35

Additional Practice

Problem	Score	Companies	Time	Status
Step by Step	200	toppr	38:17
Next Smallest Palindrome!	400	grofers	51:02
Distribute in Circle!	100	Goldman Sachs	18:37
Total Moves For Bishop!	75	Goldman Sachs	26:20