Given the head of a sorted linked list, delete all nodes that have duplicate numbers, leaving only distinct numbers from the original list. Return the linked list sorted as well. -0-op000 Example 1: 2 Input: head = [1,2,3, 3 , 4 , 4 , 5] Output: [1, 2,5] Fogoo Example 2: 1 1 2 3 2 3 Input: head = [1,1,1,2,3] Output: [2, 3]

Given the head of a sorted linked list, delete all nodes that have duplicate numbers, leaving only distinct numbers from the original list. Return the linked list sorted as well. -0-op000 Example 1: 2 Input: head = [1,2,3, 3 , 4 , 4 , 5] Output: [1, 2,5] Fogoo Example 2: 1 1 2 3 2 3 Input: head = [1,1,1,2,3] Output: [2, 3]

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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You have two numbers represented by a linked list, where each node contains a singledigit. The digits are stored in reverse order, such that the 1 's digit is at the head of the list. Write afunction that adds the two numbers and returns the sum as a linked list.EXAMPLEInput: (7-> 1 -> 6) + (5 -> 9 -> 2).That is,617 + 295.Output: 2 -> 1 -> 9. That is, 912.FOLLOW UPSuppose the digits are stored in forward order. Repeat the above problem.EXAMPLElnput:(6 -> 1 -> 7) + (2 -> 9 -> 5).That is,617 + 295.Output: 9 -> 1 -> 2. That is, 912
Create a strategy to delete all nodes with the same key from a linked list.
If you have a chaining hash table of size T, you may use it to find out how many linked lists it contains. The Separate Chaining hash table can store what kind of basic data structures?
A singly linked list can be reversed by altering the nodes' pointers. The original list's nodes should still contain the data that the list represents.For instance, if a single linked list START is supplied, as in Figure P6.9(a), the list must be reversed using just the links, as in Figure P6.9(b).
A singly linked list can perform insertion and deletion of nodes from both ends in constant time. True or False?
In what range of sizes does the most effective linked list operate? Which one goes on the longest?
ANSWER!!Is it possible to implement a search algorithm that runs in logarithmic time for a linked list? Why or why not?
Given a linked list of N nodes such that it may contain a loop. A loop here means that the last node of the link list is connected to the node at position X(1-based index). If the link list does not have any loop, X=0. Remove the loop from the linked list, if it is present, i.e. unlink the last node which is forming the loop. Example 1: Input: N = 3 value[] = {1,3,4} X = 2 Output: 1 Explanation: The link li. st looks like 1 -> 3 -> 4 ^ | |____|
In a doubly linked list of five nodes, if n points at the first node and p points at the second node, which of the following expressions does not refer to the third node in the list? a. p.next b. n.next.next.prev.next c. p.prev.next d. p.next.prev.next e. n.next.next
Given a singly linked list of integers, reverse the nodes of the linked list 'k' at a time and return its modified list. 'k' is a positive integer and is less than or equal to the length of the linked list. If the number of nodes is not a multiple of 'k,' then left-out nodes, in the end, should be reversed as well.Example :Given this linked list: 1 -> 2 -> 3 -> 4 -> 5 For k = 2, you should return: 2 -> 1 -> 4 -> 3 -> 5 For k = 3, you should return: 3 -> 2 -> 1 -> 5 -> 4 Note :No need to print the list, it has already been taken care. Only return the new head to the list. Input format :The first line contains an Integer 't' which denotes the number of test cases or queries to be run. Then the test cases follow. The first line of each test case or query contains the elements of the singly linked list separated by a single space. The second line of input contains a single integer depicting the value of 'k'. Remember/Consider :While specifying the list…
Reverse a singly linked list by changing the pointers of the nodes. The datarepresented by the list should continue to remain in the same nodes of the originallist.For example, given a singly linked list START, as shown in Figure P6.9(a), the listneeds to be reversed, as shown in Figure P6.9(b), by manipulating the links alone.
Show the result when we insert the keys 5; 28; 19; 15; 20; 33; 12; 17; 10 into a hash table with collisions resolved by linked list at each slot. Let the hash table have 9 slots, and let the hash function be h(x) = (2x+1) mod 9. (You are expected to draw the final hash table)