How to resolve the algorithm The Twelve Days of Christmas step by step in the jq programming language

Published on 12 May 2024 09:40 PM
#Jq

How to resolve the algorithm The Twelve Days of Christmas step by step in the jq programming language

Table of Contents

Problem Statement

Write a program that outputs the lyrics of the Christmas carol The Twelve Days of Christmas. The lyrics can be found here.
(You must reproduce the words in the correct order, but case, format, and punctuation are left to your discretion.)

Let's start with the solution:

Step by Step solution about How to resolve the algorithm The Twelve Days of Christmas step by step in the jq programming language

Source code in the jq programming language

[ "one", "two", "three", "four", "five", "six",
    "seven", "eight", "nine", "ten", "eleven", "twelve"] as $cardinals
| [ "first", "second", "third", "fourth", "fifth", "sixth",
    "seventh", "eighth", "ninth", "tenth", "eleventh", "twelfth"] as $ordinals
| [ "a partridge in a pear tree.", "turtle doves", "French hens",
    "calling birds", "gold rings", "geese a-laying", "swans a-swimming",
    "maids a-milking", "ladies dancing", "lords a-leaping", "pipers piping",
    "drummers drumming" ] as $gifts
| range(12) | . as $i | $ordinals[$i] as $nth
| "On the " + $nth + " day of Christmas, my true love sent to me:\n" +
  ([[range($i+1)]|reverse[]|. as $j|$cardinals[$j] as $count|
     if $j > 0 then $count else if $i > 0 then "and" else "" end end + 
      " " + $gifts[$j] + if $j > 0 then "," else "\n" end]
  | join("\n"))

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