We flatten a list L by first removing all lists within L and replacing them with their members. Write a Prolog rule flattenit/2 which flattens a list. Note: there is a built-in called flatten - you should not use that in your answer. For example: :- flattenit([a,b,c,[d,e],f,[c, a, b]], [a,b,c,d,e,f,c,a,b]). :- flattenit([1,2,3,4,[5,6,[7,8]]], [1,2,3,4,5,6,7,8]). :- flattenit([1,2,[3,4,[5,6],7],8,[2,4,5,8]], [1,2,3,4,5,6,7,8,2,4,5,8]).
We flatten a list L by first removing all lists within L and replacing them with their members. Write a Prolog rule flattenit/2 which flattens a list. Note: there is a built-in called flatten - you should not use that in your answer. For example: :- flattenit([a,b,c,[d,e],f,[c, a, b]], [a,b,c,d,e,f,c,a,b]). :- flattenit([1,2,3,4,[5,6,[7,8]]], [1,2,3,4,5,6,7,8]). :- flattenit([1,2,[3,4,[5,6],7],8,[2,4,5,8]], [1,2,3,4,5,6,7,8,2,4,5,8]).
Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
Problem 1PE
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![PROLOG LANGUAGE
We flatten a list L by first removing all lists within L and replacing them with their members. Write a
Prolog rule flattenit/2 which flattens a list. Note: there is a built-in called flatten - you should not use
that in your answer.
For example:
:- flattenit([a,b,c,[d,e],f,[c, a, b]], [a,b,c,d,e,f,c,a,b]).
:- flattenit([1,2,3,4,5,6,[7,8]]], [1,2,3,4,5,6,7,8]).
:- flattenit([1,2,[3,4,[5,6],7,8,[2,4,5,8]], [1,2,3,4,5,6,7,8,2,4,5,8]).](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Ffcf32960-e7ed-4e64-80b4-9f0df39880aa%2F03b4a225-06b6-4132-a44a-49cae33a4dd0%2F9ko5jvd_processed.png&w=3840&q=75)
Transcribed Image Text:PROLOG LANGUAGE
We flatten a list L by first removing all lists within L and replacing them with their members. Write a
Prolog rule flattenit/2 which flattens a list. Note: there is a built-in called flatten - you should not use
that in your answer.
For example:
:- flattenit([a,b,c,[d,e],f,[c, a, b]], [a,b,c,d,e,f,c,a,b]).
:- flattenit([1,2,3,4,5,6,[7,8]]], [1,2,3,4,5,6,7,8]).
:- flattenit([1,2,[3,4,[5,6],7,8,[2,4,5,8]], [1,2,3,4,5,6,7,8,2,4,5,8]).
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