In this exercise, we count how many times the letter ‘p’ occurs in Peter Piper’s famous tongue twister:

Peter Piper picked a peck of pickled peppers.
A peck of pickled peppers Peter Piper picked.
If Peter Piper picked a peck of pickled peppers,
Where's the peck of pickled peppers Peter Piper picked?

Update file peter-piper.js, adding the correct code to count the number of times a “P” occurs in the Peter Piper tongue twister. Be sure to count both uppercase P and lowercase p characters.

• To begin, fork this repository.
• Create a new Cloud9 workspace from your new repository.
  • Alternatively, you may clone your new repository to your computer.
• Modify the files and commit changes to complete your solution.
• Run node test to verify that all tests pass.
• Push/sync the changes up to GitHub.
• Create a pull request on the original repository to turn in the assignment.

You are also welcome commit, push, and create a pull request before you’ve completed your solution. You can ask questions or request feedback there in your pull request. Just mention @barberboy in your comments to get my attention.

Want to work a bit harder? Try these variations:

• Define a function called countOccurrences(string, char), which counts the number of times the character char occurs in the string string, then call it to find the number of p's in the tongue twister, like:
  var counter = countOccurences(peterpiper, 'p');.

• Instead of looking for the letter 'p', count the number of times the word 'peck' occurs in the tongue twister.

• Try counting the occurrences of 'p' without using a for loop. Take a look at the other String.prototype methods for ideas.

Use git branch (and git checkout) to work on the extra credit on separate branches.

• string.length property
• for loop
• string.charAt(index) method
• Equality operator
• Logical OR
• Increment operator
• console.log