Problem Solving Practice

Write a function that takes an array of numbers and returns the largest (without using Math.max())

largest([3, 5, 2, 8, 1]) // => 8  

Write a function that takes an array of words and a character and return each word that has that letter present.

lettersWithStrings(["#3", "$$$", "C%4!", "Hey!"], "!") // => ["C%4!", "Hey!"]  

Write a function that takes a num1 and num2 and returns whether num1 is divisible by num2.

isDivisible(4, 2) // => true  
isDivisible(9, 3) // => true  
isDivisible(15, 4) // => false