DMCommunity.org Challenge Nov-2019 asks us to build numerical versions of traditional Japanese haiku poems. Here is an example of a traditional Haiku poem:
(5) The sky is so blue.
(7) The sun is so warm up high.
(5) I love the summer.

A haiku poem consists of three-lines written in a 5/7/5 syllable count. Here is an example of a numerical haiku:
          77    [seventy seven has 5 syllables]
     + 123   [one hundred twenty three has  6 syllables + 1 syllable for “plus”]
     = 200   [two hundred has  3 syllables + 2 syllables for “equals”]

Nathan Brixius proposed a solution using the open-source constraint package written in Python. I really like this problem and decided to ponder this challenge with a free open-sourced JavaSolver. Below is my solution for numerical Haiku and Tanka. Continue reading →