Given a line defined by (x1,y1) & (x2,y2),return the number of squares that the line crosses on the grid (a square is 1x1).
Coming next: return the number of squares for any geometrical shape
Bug: The order of the arguments in the starting function definition is x1, x2, y1, y2, whereas the the order in the test cases is x1, y1, x2, y2.
Add two numbers
Which doors are open?
Calculate the Levenshtein distance between two strings
Return the first and last character of a string
How many rectangles in a grid ?
Speed of light:Experiment
center of mass
length of string on cylinder
Slicing the cube
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