Given the unsigned 8-bit integer x, return the number y which is the binary inversion of x.
For example if x is 5, y should be 250 because:
5 (8-bit): 00000101
250 (8-bit): 11111010
Inner product of two vectors
Return the first and last character of a string
Area of a triangle
Add the positive numbers
Count the numbers
Connect 4 (the boardgame)
All odd - all even
Magnitude of a vector
X plus binary inverted x
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