JS Functions Challenges

js_function_challenges.md

Javascript Function Challenges

1. Create a program that will add two numbers and return the answer
   add(1,2) // should return 3
2. Create a program that will add or subtract two numbers and return the answer
   calculator(1, 2, "add") // should return 3
calculator(1, 2, "subtract") // should return -1
3. Create a program that will get the sum of the numbers between 1 and n and return the answer
   summation(5) // should return 15 because 1+2+3+4+5=15
4. Create a program to get the average of a group of numbers
   avg([8, 2, 2, 4]) // should return 4
5. Create a program to get the sum of all the even numbers in a group
   summationEven(5) // should return 6 because 2+4=6
6. Create a program to reverse the letters in a word
   reverse("caterpillar") // should return "rallipretac"
7. Create a function that takes an array of words and combines them with a dash
   addDashes(['test1', 'test2', 'test3']) // should return "test1-test2-test3"
8. Function that will count up to a number and back down and return a string of the climb
   countUpAndDown(3) // should return "1 2 3 2 1"
9. Write a function that will tell you all of the words in an array that contain the letter a
   wordsWithA(['cat', 'rabbit', 'dog', 'frog']) // should return ['cat', 'rabbit']
10. Function that returns the longest word in sentence
    longestWord("The cat in the house") // should return "house"