Isogram

Isogram

Easy

Instructions

Determine if a word or phrase is an isogram.

An isogram (also known as a "non-pattern word") is a word or phrase without a repeating letter, however spaces and hyphens are allowed to appear multiple times.

Examples of isograms:

  • lumberjacks
  • background
  • downstream
  • six-year-old

The word isograms, however, is not an isogram, because the s repeats.


Source

WikipediaThe link opens in a new window or tab
Edit via GitHub The link opens in a new window or tab
Common Lisp Exercism

Ready to start Isogram?

Sign up to Exercism to learn and master Common Lisp with 27 concepts, 83 exercises, and real human mentoring, all for free.