Write the code in pythonmake it simple to understand please Given a singly linked list, you need to do two tasks.At first reverse the linked list Then, insert a node containing a given valuelelement in thesecond last index of the linked list. For example, if the given linked list is 1->2->3->4->5 andvalue is 19 then the linked list should be modified to 5->4->3->19->2->1. Here, the given linkedlist was reversed and then a node containing a given value 19 was inserted in the second lastindex of the linked listIf the input linked list is NULL or it has only 1 node then just the current head of the linked listwill be returned. Sample 1: Input NULL, 13 output NULLSample 2: Input 1,20 output 1Sample 3: Input 1->2,33 output 33->2->1Sample 4: Input 1-→2->3,7 output 3->7->2->1Sample 5: Input 1>2->3->4,65 output 4>3->65->2->1Sample 6: Input 1->2->3->4->5>6,21 output 6->5->4->3->21->2>1Input: The function takes two arguments as inputs First one is the reference pointer to thehead of the linked list and the second one is an integer which is going to be inserted in thelinked listOutput: Your function should return the head of the modified linked list If the linked list isempty then it should return NULLUser Task: The task is to complete the function revinsert Node head, int elem) which willreverse the linked list and then insert a node containing the given element in the secondlast index of the linked list.

Algorithm: Start the program. Read the input from user. Create a linked list. Reverse the linked…

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Write the code in python make it simple to understand please

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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Question

Write the code in python

make it simple to understand please

Given a singly linked list, you need to do two tasks.
At first reverse the linked list Then, insert a node containing a given valuelelement in the
second last index of the linked list. For example, if the given linked list is 1->2->3->4->5 and
value is 19 then the linked list should be modified to 5->4->3->19->2->1. Here, the given linked
list was reversed and then a node containing a given value 19 was inserted in the second last
index of the linked list
If the input linked list is NULL or it has only 1 node then just the current head of the linked list
will be returned.

Sample 1: Input NULL, 13 output NULL
Sample 2: Input 1,20 output 1
Sample 3: Input 1->2,33 output 33->2->1
Sample 4: Input 1-→2->3,7 output 3->7->2->1
Sample 5: Input 1>2->3->4,65 output 4>3->65->2->1
Sample 6: Input 1->2->3->4->5>6,21 output 6->5->4->3->21->2>1
Input: The function takes two arguments as inputs First one is the reference pointer to the
head of the linked list and the second one is an integer which is going to be inserted in the
linked list
Output: Your function should return the head of the modified linked list If the linked list is
empty then it should return NULL
User Task: The task is to complete the function revinsert Node head, int elem) which will
reverse the linked list and then insert a node containing the given element in the second
last index of the linked list.

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