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These questions are designed to help prepare you for the Technical Interview. Try completing these practice problems without using notes or online resources.

Use loops rather than relying on built-in JS functions such as reverse() or filter() for the following questions. In a real interview this restriction may or may not apply, but it’s good practice!

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function reverseString(str) {
    // TODO
}

• Write code to test this function.
• What edge cases should you consider?

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function calculate(num1, operator, num2) {
    // TODO
}

• Write code to test this function.
• What edge cases should you consider?

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function countEvenNumbers(arr) {
	// TODO
}

• Write code to test this function.
• What edge cases should you consider?

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function findFirstIndex(arr, element) {
    // TODO
}

• Write code to test this function.
• What edge cases should you consider?

For multiples of 3, print “Fizz” instead of the number. For multiples of 5, print “Buzz”. For numbers which are multiples of both 3 and 5, print “FizzBuzz”.

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function fizzBuzz(n) {
	// TODO
}