Challenge: Find the Floor and Ceil of a Number in a Sorted List

In this lesson, we will learn about finding the floor and ceiling of a number from a given pool of numbers.

Floor functions

A floor function takes a real number xx and returns the greatest Integer less than or equal to x.x.

For example,

floor(x)=xfloor(x) = \lfloor x \rfloor

floor(7.5)=7.5=7floor(7.5) = \lfloor 7.5 \rfloor = 7

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