hackerrank-python

My practice with Python solving problems in HackerRank

My HackerRank profile

https://www.hackerrank.com/charlesartbr

206 challenges solved

• Algorithms

  • Warmup
    • Compare the Triplets

• Python

  • Introduction

    • Say "Hello, World!" With Python
    • Python If-Else
    • Arithmetic Operators
    • Python: Division
    • Loops
    • Print Function
    • Write a function

  • Basic Data Types

    • Lists
    • Tuples
    • Finding the percentage
    • Nested Lists
    • Find the Runner-Up Score!
    • List Comprehensions

  • Strings

    • sWAP cASE
    • String Split and Join
    • What's Your Name?
    • Mutations
    • Find a string
    • String Validators
    • Text Alignment
    • Text Wrap
    • Designer Door Mat
    • String Formatting
    • Alphabet Rangoli
    • Capitalize!
    • The Minion Game
    • Merge the Tools!

  • Sets

    • Introduction to Sets
    • Symmetric Difference
    • Set .add()
    • Set .discard(), .remove() & .pop()
    • Set .union() Operation
    • Set .intersection() Operation
    • Set .difference() Operation
    • Set .symmetric_difference() Operation
    • Check Subset
    • Check Strict Superset
    • Set Mutations
    • The Captain's Room
    • No Idea!

  • Math

    • Polar Coordinates
    • Power - Mod Power
    • Integers Come In All Sizes
    • Mod Divmod
    • Triangle Quest
    • Triangle Quest 2
    • Find Angle MBC

  • Itertools

    • itertools.permutations()
    • itertools.combinations()
    • itertools.combinations_with_replacement()
    • itertools.product()
    • Compress the String!
    • Iterables and Iterators
    • Maximize It!

  • Collections

    • collections.Counter()
    • DefaultDict Tutorial
    • Collections.OrderedDict()
    • Collections.deque()
    • Collections.namedtuple()
    • Word Order
    • Company Logo
    • Piling Up!

  • Date and Time

    • Calendar Module
    • Time Delta

  • Errors and Exceptions

    • Incorrect Regex
    • Exceptions

  • Classes

    • Classes: Dealing with Complex Numbers
    • Class 2 - Find the Torsional Angle

  • Built-Ins

    • Zipped!
    • Python Evaluation
    • Any or All
    • Input()
    • Athlete Sort
    • ginortS

  • Functionals

    • Map and Lambda Function
    • Validating Email Addresses With a Filter
    • Reduce Function

  • Regex and Parsing

    • Validating and Parsing Email Addresses
    • Detect Floating Point Number
    • Re.split()
    • Group(), Groups() & Groupdict()
    • Re.findall() & Re.finditer()
    • Re.start() & Re.end()
    • Validating Roman Numerals
    • Validating phone numbers
    • Hex Color Code
    • HTML Parser - Part 1
    • HTML Parser - Part 2
    • Detect HTML Tags, Attributes and Attribute Values
    • Validating UID
    • Validating Credit Card Numbers
    • Validating Postal Codes
    • Matrix Script
    • Regex Substitution

  • XML

    • XML 1 - Find the Score
    • XML 2 - Find the Maximum Depth

  • Closures and Decorators

    • Standardize Mobile Number Using Decorators
    • Decorators 2 - Name Directory

  • NumPy

    • Arrays
    • Shape and Reshape
    • Concatenate
    • Zeros and Ones
    • Eye and Identity
    • Array Mathematics
    • Floor, Ceil and Rint
    • Sum and Prod
    • Min and Max
    • Mean, Var, and Std
    • Dot and Cross
    • Inner and Outer
    • Transpose and Flatten
    • Polynomials
    • Linear Algebra

  • Debugging

    • Words Score
    • Default Arguments

  • Bit Manipulation

    • Sum vs XOR

• 10 Days of Statistics

  • Day 0: Mean, Median, and Mode
  • Day 0: Weighted Mean
  • Day 1: Quartiles
  • Day 1: Interquartile Range
  • Day 1: Standard Deviation
  • Day 2: Basic Probability
  • Day 2: More Dice
  • Day 2: Compound Event Probability
  • Day 3: Conditional Probability
  • Day 3: Cards of the Same Suit
  • Day 3: Drawing Marbles
  • Day 4: Binomial Distribution I
  • Day 4: Binomial Distribution II
  • Day 4: Geometric Distribution I
  • Day 4: Geometric Distribution II
  • Day 5: Poisson Distribution I
  • Day 5: Poisson Distribution II
  • Day 5: Normal Distribution I
  • Day 5: Normal Distribution II
  • Day 6: The Central Limit Theorem I
  • Day 6: The Central Limit Theorem II
  • Day 6: The Central Limit Theorem III
  • Day 7: Pearson Correlation Coefficient
  • Day 7: Spearman's Rank Correlation Coefficient
  • Day 8: Least Square Regression Line
  • Day 9: Multiple Linear Regression

• 30 Days of Code

  • Day 0: Hello, World.
  • Day 1: Data Types
  • Day 2: Operators
  • Day 3: Intro to Conditional Statements
  • Day 4: Class vs. Instance
  • Day 5: Loops
  • Day 6: Let's Review
  • Day 7: Arrays
  • Day 8: Dictionaries and Maps
  • Day 9: Recursion 3
  • 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 - String to Integer
  • Day 17: More Exceptions
  • Day 18: Queues and Stacks
  • Day 19: Interfaces
  • Day 20: Sorting
  • Day 21: Generics (not possible in Python)
  • 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, and Intro to Databases
  • Day 29: Bitwise AND

• Interview Preparation Kit

  • Warm-up Challenges
    • Sock Merchant
    • Counting Valleys
    • Jumping on the Clouds
    • Repeated String
  • Arrays
    • 2D Array - DS
    • Arrays: Left Rotation
    • New Year Chaos
    • Minimum Swaps 2
    • Array Manipulation
  • Dictionaries and Hashmaps
    • Hash Tables: Ransom Note
    • Two Strings
    • Sherlock and Anagrams
    • Count Triplets
  • String Manipulation
    • Alternating Characters
    • Strings: Making Anagrams
    • Sherlock and the Valid String
    • Special String Again
  • Sorting
    • Bubble Sort
    • Mark and Toys
    • Comparator
    • Fraudulent Activity Notifications
  • Greedy Algorithms
    • Minimum Absolute Difference in an Array
    • Luck Balance
  • Tress
    • Tree: Height of a Binary Tree
    • Binary Search Tree: Lowest Common Ancestor
  • Linked Lists
    • Insert a node at a specific position in a linked list
    • Inserting a Node Into a Sorted Doubly Linked List
    • Reverse a doubly linked list
    • Find Merge Point of Two Lists
    • Detect a Cycle
  • Recursion and Backtracking
    • Recursion: Fibonacci Numbers
  • Miscellaneous
    • Flipping bits

• Hack the Interview II - Global

  • Product Distribution
  • Maximal Char Requests