Math & Geometry Cheat Sheet

What is Math & Geometry?

Apply mathematical concepts to algorithmic problems.

Template Code

def rotate(matrix: List[List[int]]) -> None:
    n = len(matrix)
    
    # Step 1: Transpose (swap across diagonal)
    for i in range(n):
        for j in range(i + 1, n):
            matrix[i][j], matrix[j][i] = matrix[j][i], matrix[i][j]
    
    # Step 2: Reverse each row
    for i in range(n):
        matrix[i].reverse()

Complexity

Common Variations

• Basic Math & Geometry
• Math & Geometry with constraints
• Optimized Math & Geometry

Practice Problems