Implement a function clamp(number, lower, upper) that restricts a number to be within the inclusive lower and upper bounds.

The function should:

• Accept three arguments:
  • number: The number to clamp
  • lower: The minimum allowed value
  • upper: The maximum allowed value
• Return lower if number < lower
• Return upper if number > upper
• Return number if it is between lower and upper

Example

clamp(5, 1, 10); // 5
clamp(-3, 0, 7); // 0
clamp(12, 0, 10); // 10