X$1273$: Contains $($with linear search$)$

Complete the following contains method so it returns true if the value being searched is found in the array, or false othenwise. You must use a linear search to find the value. It is unspecified if the array is ordered or not, so assume it is not.

Examples:

contains $(\{1,7,4\},7)$ true

contains $(\{1,7,4\},5)$ false