HackerRank

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Problem solutions of HackerRank.

You can follow me on HackerRank at mokit_hossain201

Problem Solving | Challenges: 116/563 | Points: 2364.59 | Rank: 14850

Algorithms | Challenges: 90/..

• Warmup
• Implementation
• Strings
• Sorting
• Search
• Graph Theory
• Greedy
• Dynamic Programming
• Constructive Algorithms
• Bit Manipulation
• Recursion
• Game Theory
• NP Complete

DataStructures | Challenges: 26/..

• Arrays
• Linked Lists
• Trees
• Balanced Trees
• Stacks
• Queues
• Heap
• Disjoint Set
• Multiple Choice
• Trie
• Advanced

Mathematics | Challenges: 39/0 | Points: 514.76 | Rank: 3399

• Fundamentals
• Number Theory
• Combinatorics
• Algebra
• Geometry
• Probability
• Linear Algebra Foundations

Tutorials

Interview Preparation Kit

• Not updated

30 Days of Code | Challenges: 28/30 | Points: 28

• Day-0-Hello World
• Day-1-Data Types
• Day-2-Operators
• Day-3-Conditional Statements
• Day-4-Class Vs Instance
• Day-5-Loops
• Day-6-Review
• Day-7-Arrays
• Day-8-Dictionaries and Maps
• Day-9-Recursion
• Day-10-Binary Numbers
• Day-11-2D Arrays
• Day-12-Inheritance
• Day-13-Abstract Classes
• Day-14-Scope
• Day-15-Linked List
• Day-16-Exceptions
• Day-17-More Exceptions
• Day-18-Queues and Stacks
• Day-19-Interfaces
• Day-20-Sorting
• Day-21-Generics
• [Day-22-Binary Search Trees
• [Day-23-BST Level Order Traversal
• Day-24-More Linked Lists
• Day-25-Running Time and Complexity
• Day-26-Nested Logic
• Day-27-Testing
• Day-28-RegEx, Patterns
• Day-29-Bitwise AND

10 Days of Statistics | Challenges: 27/27 | Points: 27

• Day-0-Mean, Median, Mode, Weighed Mean
• Day-1-Quartiles, Interquartile Range, Standard Deviation
• Day-2-Basic Probability, Compound Event Probability
• Day-3-Conditional Probability
• Day-4-Binomial Distribution, Geometric Distribution
• Day-5-Poisson Distribution, Normal Distribution
• Day-6-The Central Limit Theorem
• Day-7-Pearson Correlation Coefficient, Spearman's Rank Correlation Coefficient
• Day-8-Least Square Regression Line
• Day-9-Multiple Linear Regression

10 Days of JavaScript | Challenges: 24/25 | Points: 24

• Day-0-Hello World, Data Types
• Day-1-Arithmetic Operators, Functions, Let and Const
• Day-2-Conditional Statements: If-Else, Switch and Loops
• Day-3-Arrays, Try, Catch and Finally, Throw
• Day-4-Class and Object
• Day-5-Inheritance, Template Literals, Arrow Functions
• Day-6-Bitwise Operators, Dates
• Day-7-Regular Expressions
• Day-8-Button, Buttons Container
• [Day-9

Specialized Skills

Artificial Intelligence | Challenges: 3/.. | Points: 14 | Rank: 50053

• Bot Building
• A* Search
• Alpha Beta Pruning
• Combinatorial Search
• Games
• Statistics and Machine Learning
• Digital Image Analysis
• Natural Language Processing
• Probability & Statistics - Foundations

SQL | Challenges: 45/58 | Points: 700 | Rank: 16393

• Basic Select
• Advanced Select
• Aggregation
• Basic Join
• [Advanced Join
• [Alternative Queries

Databases

• Relational Algebra
• Indexes
• OLAP
• Set and Algebra
• NoSQL - XML, MapReduce
• Database Normalization

Distributed Systems

• Multiple Choice
• Client Server
• MapReduce Basics

Regex | Challenges: 40/0 | Points: 587 | Rank: 1115

• Introduction
• Character Class
• Repetitions
• Grouping and Capturing
• Backreferences
• Assertions
• Applications

Security

• Functions
• Terminology and Concepts
• Cryptography

Languages Proficiency

C | Challenges: 21/25 | Points: 410 | Rank: 1656

• Introduction
• Conditionals and Loops
• Arrays and Strings
• Functions
• Structs and Enums

C++ | Challenges: 30/44 | Points: 515 | Rank: 8086

• Introduction
• Strings
• Classes
• STL
• Inheritance
• Other Concepts

Java | Challenges: 25/64 | Points: 260.76 | Rank: 38889

• Introduction
• Strings
• BigNumber
• Data Structures
• [Object Oriented Programming
• [Exception Handling
• [Advanced

Python | Challenges: 115/115 | Points: 2305 | Rank: 001

• Introduction
• Basic Data Types
• Strings
• Sets
• Math
• Itertools
• Collections
• Date and Time
• Errors and Exceptions
• Classes
• Built-Ins
• Python Functionals
• Regex and Parsing
• XML
• Closures and Decorators
• Numpy
• Debugging

Ruby | Challenges: 9/41 | Points: 610 | Rank: 001

• Introduction
• Control Structures
• Arrays & Hashes
• Enumerables
• Methods
• Strings

Linux Shell | Challenges: 48/0 | Points: 74 | Rank: 4736

• Bash
• Text Processing
• Arrays in Bash
• Grep Sed Awk

Functional Programming

• Introduction
• Recursion
• Functional Structures
• Memoization and DP
• Persistent Structures
• Ad Hoc
• Parsers
• Interpreter and Compilers