Input n: is an positive integer which serves as the dimension of the matrix A;
Output: A=(Aij),where each entry Aij is either 1 or -1 which is generated
For n<1 the function should deliver an empty matrix.
Volume of this donut
Reverse the vector
Output any real number that is neither positive nor negative
Celsius to Fahrenheit converter
Generate a NaN...on purpose
Travelling Salesman Problem (TSP)
dir with recursive subdirectory search
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