Zebra Puzzle

Challenge Overview

Solve the zebra puzzle.

Visit the zebra-puzzle exercise on Exercism to read the full instructions and download the exercise files.

Community Solutions

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The following are the top 3 community solutions by stars:

Solution 1 by @DunetsNM (⭐ 1) — View on Exercism
Solution 2 by @ChrisPritchard (⭐ 0) — View on Exercism
Solution 3 by @kaaja (⭐ 0) — View on Exercism

Source: Exercism fsharp/zebra-puzzle

💡 View Solution

module ZebraPuzzle

type Color = | Green | Red | Yellow | Blue | Ivory 
type Man = | Englishman | Spaniard | Ukranian | Norwegian | Japanese 
type Drink = | Coffee | Tea | Milk | OrangeJuice | Water
type Pet = | Dog | Snails | Fox | Horse | Zebra
type Smoke = | OldGold | Kools | Chesterfield | LuckyStrike | Parliament

let rec permutations = function
    | []      -> seq [List.empty]