How to resolve the algorithm Create a two-dimensional array at runtime step by step in the Erlang programming language

Published on 12 May 2024 09:40 PM
#Erlang

How to resolve the algorithm Create a two-dimensional array at runtime step by step in the Erlang programming language

Table of Contents

Problem Statement

Get two integers from the user, then create a two-dimensional array where the two dimensions have the sizes given by those numbers, and which can be accessed in the most natural way possible. Write some element of that array, and then output that element. Finally destroy the array if not done by the language itself.

Let's start with the solution:

Step by Step solution about How to resolve the algorithm Create a two-dimensional array at runtime step by step in the Erlang programming language

Source code in the erlang programming language

-module( two_dimensional_array ).

-export( [create/2, get/3, set/4, task/0] ).

create( X, Y ) -> array:new( [{size, X}, {default, array:new( [{size, Y}] )}] ).

get( X, Y, Array ) -> array:get( Y, array:get(X, Array) ).

set( X, Y, Value, Array ) ->
	Y_array = array:get( X, Array ),
	New_y_array = array:set( Y, Value, Y_array ),
	array:set( X, New_y_array, Array ).

task() ->
	{ok, [X, Y]} = io:fread( "Input two integers.  Space delimited, please:  ", "~d ~d" ),
	Array = create( X, Y ),
	New_array = set( X - 1, Y - 1, X * Y, Array ),
	io:fwrite( "In position ~p ~p we have ~p~n", [X - 1, Y - 1, get( X - 1, Y - 1, New_array)] ).

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