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Return the factorial of the provided integer.
If the integer is represented with the letter n, a factorial is the product of all positive integers less than or equal to n.
Factorials are often represented with the shorthand notation n!
For example: 5! = 1 * 2 * 3 * 4 * 5 = 120
Only integers greater than or equal to zero will be supplied to the function.
Remember to use Read-Search-Ask if you get stuck. Write your own code.
Example
- factorializeANumber(5) returns 120;
- factorializeANumber(10) returns 3628800;