Squareeach(nums) nums is a list of numbers. Modifies the list by squaring each entry.
a) Implement a function that squares each number in the list using a loop.
b) Implement a function that squares each number in the list using list comprehension.
c) Implement a function that squares each number in the list using the map function.
d) Implement a function that squares each number in the list using recursion.