Answered: Exercise F Implement the Prelude…

Exercise F Implement the Prelude function !! that selects the nth element of a list using recursion NOTE throw an error when indexing out of bounds (!!) :: [a] -> Int -> a (!!) xs n = error

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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Concept explainers

Types of Linked List

A sequence of data elements connected through links is called a linked list (LL). The elements of a linked list are nodes containing data and a reference to the next node in the list. In a linked list, the elements are stored in a non-contiguous manner and the linear order in maintained by means of a pointer associated with each node in the list which is used to point to the subsequent node in the list.

Linked List

When a set of items is organized sequentially, it is termed as list. Linked list is a list whose order is given by links from one item to the next. It contains a link to the structure containing the next item so we can say that it is a completely different way to represent a list. In linked list, each structure of the list is known as node and it consists of two fields (one for containing the item and other one is for containing the next item address).

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Hey need help with this question, in haskell

Exercise F
Implement the Prelude function !! that selects the nth element of a list using recursion
NOTE throw an error when indexing out of bounds
(!!) :: [a] -> Int -> a
(!!) xs n = error

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