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Challenges
2,500 Python challenges
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Adding Numbers with Unknowns
Hard
Python
math
algebra
numbers
Recursion: Extreme Indices and Values
Hard
Python
recursion
arrays
The Golden Ratio
Hard
Python
math
numbers
strings
Playfair Cipher
Hard
Python
algorithms
cryptography
loops
Syllables of a Word
Hard
Python
algorithms
regex
validation
A Hot Brick
Hard
Python
arrays
loops
math
Baum-Sweet Sequence
Hard
Python
math
numbers
Black Holes
Hard
Python
physics
math
Conversion of Units of Temperature
Hard
Python
physics
math
How Many Paths?
Hard
Python
functional_programming
arrays
Moving Particles Absorb Each Other after Collisions
Hard
Python
algorithms
games
logic
Open All Cells If Possible
Hard
Python
algorithms
arrays
games
Ragbaby Cipher
Hard
Python
cryptography
algorithms
strings
Recursion: Index Parity of Largest Even
Hard
Python
recursion
arrays
numbers
The Mysterious Number 6174
Hard
Python
numbers
math
Hidden in Plain Sight
Hard
Python
conditions
cryptography
loops
Party People Part II: Make it Efficient
Hard
Python
algorithms
loops
numbers
Area of a List
Hard
Python
algorithms
arrays
numbers
Modular Arithmetic (Part #4)
Hard
Python
math
algebra
bugs
Random Number Generator
Hard
Python
algorithms
games
math
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