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Python Challenges
A categorized collection of cool Python problems. Enjoy and learn from the journey!
Mathematics
#1
: Even or Odd
#2
: Number as Text (Simple)
#3
: Perfect Numbers
#4
: Prime Numbers
#5
: Prime Numbers Pairs
#6
: Checksum
#7
: Roman Numerals
#8
: Combinatorics (Quadratic)
#9
: Combinatorics (Cubic)
#10
: Armstrong Numbers
#11
: Max Change Calculator
#12
: Related Numbers
#13
: Prime Factorization
Recursion
#14
: Fibonacci
#15
: Count Digits
#16
: GCD
#17
: LCM
#18
: List Sum
#19
: List Min
#20
: Reverse String
#21
: Power
#22
: Cross Sum
Strings
#23
: Anagrams
#24
: Baseball Game
#25
: Tennis Score & Game
#26
: Capitalize
#27
: Joiner
#28
: Morse Code
#29
: Check Duplicates
#30
: Palindromes (string)
#31
: Reverse String
#33
: Binary, HEX to Decimal
#34
: Well formed braces
Lists, Sets, Dictionaries, and Data Structures
#34
: Addition of Digits
#35
: List Reverse (inplace)
#36
: List Reverse (without index)
#37
: Maximum Profit
#38
: Stack (data structure)
#39
: Queue (data structure)
Arrays
#40
: Add One to Array
#41
: Array Split
#42
: Even Before Odd Numbers
#43
: Palindrome (array version)
Advanced Recursion
#44
: Fibonacci (with memoization)
#45
: Pascal Triangle (with memoization)
#46
: Tower of Hanoi (graphical)
#47
: Edit Distance
Binary Tree
#48
: Binary Tree Node
#49
: Invert a Binary Tree
#50
: Lower Common Ancestor (LCA)
#51
: Symmetry
#52
: Tree Height
#53
: Rotate Tree
#54
: Level Sum
#55
: Example Trees
#56
: Count Nodes
Searching and Sorting
#57
: Python: Useful Shortcuts
#58
: Binary Search
#59
: Insertion Sort
#60
: Selection Sort
#61
: Quick Sort
#62
: Contains All
#63
: Partitioning