Declare all methods as static.

1. Write a method called numberOfVowels.

   Given a string, numberOfVowels will return the number of vowels in that string. Consider a, e, i, o, u as vowels.

2. Write a method called notDivisibleBy235*.

   Given a number N, notDivisibleBy235 will return the number of natural numbers not exceeding N that are not divisible by any of the numbers [2, 3, 5].

Example

Let's see what happens when N=5:

1 - not divisible by 2, 3, or 5
2 - divisible by 2
3 - divisible by 3
4 - divisible by 2
5 - divisible by 5

Answer: 1 (Of all the numbers from 1 to 5 inclusive, there is one number that isn't divisible by any of 2, 3, 5)

3. Write a method called camelCaseMe.

   Given a string, this method converts dash/underscore delimited words into camel casing. The first word within the output should be capitalized only if the original word was capitalized (known as Upper Camel Case, also often referred to as Pascal case). The next words should always be capitalized.

Examples

"the-stealth-warrior" gets converted to "theStealthWarrior"

"The_Stealth_Warrior" gets converted to "TheStealthWarrior"

"The_Stealth-Warrior" gets converted to "TheStealthWarrior"