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Intervening Verbiage

Given two words in a string of words, count the number of other words between the two words you are given.

Business Rules/Errata

  • Your solution will take in three pieces of input: a string containing a space-separated list of words, and two other strings representing the first and second words, respectively.
  • You may ignore all punctuation and capitalization.
  • If your two words are not in the string of words, alert the user to an error.
  • You should return a count of the words between your two words as an integer, not the words themselves.
  • If your words appear multiple times in the list of words, count words that fall between the first instance of each.

Examples

list_of_words = "There was an old lady who lived in an outhouse";
count_words_between("lady", "outhouse", list_of_words)  // 4 
count_words_between("an", "outhouse", list_of_words)    // 6
  • The words 'who', 'lived', 'in', 'an' appear between 'lady' and 'outhouse'.
  • The words 'old', 'lady', 'who', 'lived', 'in', 'an' appear between the first instance of 'an' and 'outhouse'.

Tackling This Challenge

  1. Make sure you've got the required software on your machine: A JDK 11+
  2. If you haven't already, fork the CodingDojo repository (INSTRUCTIONS).
  3. Checkout a new branch using git checkout -b yourgithubusername-wip.
  4. Add your code to the 'mob.java' file to make the countWordsBetween function work as expected.
  5. Confirm your solution by running tests. Execute the test-it.sh script (use ./test-it.sh from the challenge root directory.
  6. If you've passed all the tests, the test-it.sh script with help you commit it. Otherwise, try again to pass all tests.
  7. Navigate to GitHub, and submit your pull request.
  8. One of the CodingDojo maintainers will help you get your PR merged.

Requirements

  • JDK 11+