Implement distance

[mtso]

Closes #782

• [x] Running yarn lint does not trigger any linter errors
• [x] The test of the method you have fixed is passing
• [x] You have written a new skeleton method for someone else to work on!
• [x] You have written tests to accompany your skeleton method

[ktilcu]

@mtso awesome! Would please make an issue for your new method! Happy Hacktobering!

[ktilcu]

heh i see it now ;P