example, “shoe” and “cold” interlock to form “schooled”.
Solution: http://thinkpython2.com/code/interlock.py. Credit: This exercise is inspired by an
example at http://puzzlers.org.
1 . Write a program that finds all pairs of words that interlock. Hint: don’t enumerate all
pairs!2 . Can you find any words that are three-way interlocked; that is, every third letter
forms a word, starting from the first, second or third?