How to resolve the algorithm Ordered words step by step in the Erlang programming language

Published on 12 May 2024 09:40 PM
#Erlang

How to resolve the algorithm Ordered words step by step in the Erlang programming language

Table of Contents

Problem Statement

An   ordered word   is a word in which the letters appear in alphabetic order. Examples include   abbey   and   dirt. Find and display all the ordered words in the dictionary   unixdict.txt   that have the longest word length. (Examples that access the dictionary file locally assume that you have downloaded this file yourself.)
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Let's start with the solution:

Step by Step solution about How to resolve the algorithm Ordered words step by step in the Erlang programming language

Source code in the erlang programming language

-module( ordered_words ).

-export( [is_ordered/1, task/0] ).

is_ordered( Word ) -> lists:sort( Word ) =:=  Word.

task() ->
    ok = find_unimplemented_tasks:init_http(),
    Ordered_words = [X || X <- words(), is_ordered(X)],
    Sorted_longest_length_first = lists:reverse( sort_with_length( Ordered_words ) ),
    [{Max_length, _Word1} | _T] = Sorted_longest_length_first,
    Longest_length_first = lists:takewhile( fun({Length, _Word2}) -> Length =:= Max_length end, Sorted_longest_length_first ),
    [X || {_Length, X} <- Longest_length_first].



sort_with_length( Words ) ->
    Words_with_length_first = [{erlang:length(X), X} || X <- Words],
    lists:sort( Words_with_length_first ).

words() -> anagrams_deranged:words_from_url( "http://www.puzzlers.org/pub/wordlists/unixdict.txt" ).

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