Find the number of points (x,y) in square lattice with x^2 + y^2 =< n. This is related to Jame's Problem 1387. Here you have to find the number of points within a circle.
Find the two most distant points
Determine if a Given Number is a Triangle Number
Clock Hand Angle 1
Rotate a Matrix
Generate a random matrix A of (1,-1)
Basic arrays operations.
The almost-birthday problem.
Fahrenheit to Celsius converter
Number of vertices of a hypercube
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