The Linux OS: file system, command line and windowing environment
Distance between points, and circumference and area of a circle
Surface area and volume of solid objects
Conversion between Fahrenheit and Celsius temperature scales
Numeric computation of polynomial expressions
Velocity and Acceleration
Trigonometric problems
Signal and noise representation
Windowed moving averages
Encryption/decryption
Music generation
Card shuffles
Normalization
Data processing with arrays and strings
Image processing