Assume the following method is inside the class SingleLinkedList. What does it do?public boolean test4Question(E item){if (size < 1) return false;if (size == 1)head = new Node(item, head);else{Node p = new Node (item);Node temp = head;for(int i = 0, i< size - 2; i++)temp = temp.next;p.next = temp.next;temp.next = p;}size++;return true;}a. Adds a node with item as its data after the last node and returns true. If list is empty, it returns false.O b. Adds a node with item as its data after the first node and returns true. If list is empty, it returns false.O C. Adds a node with item as its data before the last node in the list and returns true. If list is empty, it returns false. If it has onenode, the method inserts the new node with item as its data after the node.d. Adds a node with item as its data before the last node in the list and returns true. If list is empty, it returns false. If it hasone node, the method inserts the new node with item as its data before the node.

Explanation public boolean test4Question(E item){ if(size<1) return false; // if list is…

Answered: lic boolean test4QL if (size < 1)…

lic boolean test4QL if (size < 1) return f if (size == 1) head = new No else { Node p = ne Node temp for(int i = 0, i < temp = ter p.next = temp. temp.next = p;

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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Given the following C code: struct Node int data; struct Node struct Node next; prev; struct Node head; void funx ( ) if (head==NULL) return; struct Node current=head; while (current->next!=NULL) current=current-->next; while (current!=NULL) printf("&d ", current->data; current=current->prev; What is the functionality of this function? a) Print the contents of linked list b) Print the contents of linked list in reverse order c) None
please convert to C languange #include<bits/stdc++.h>using namespace std; class tree{ //tree node public: int data; tree *left; tree *right;}; bool hasRootToLeafSum(tree *root, int s){ bool path=false; //declare boolean variable path //base condition checking if(root==NULL && s==0) return true; s-=root->data; //subtract current root value //checking whether leaf node reached and remaining sum =0 if(s==0 && root->left==NULL && root->right==NULL) return true; //recursively done for both subtrees if(root->left){//for left subtree path=path||hasRootToLeafSum(root->left, s); } if(root->right){//for right subtree path=path||hasRootToLeafSum(root->right, s); } return path;} tree* newnode(int data){ //creating new nodes tree* node = (tree*)malloc(sizeof(tree)); node->data = data; node->left = NULL; node->right = NULL;…
def is_balanced(root): return __is_balanced_recursive(root) def __is_balanced_recursive(root): """ O(N) solution """ return -1 != __get_depth(root) def __get_depth(root): """ return 0 if unbalanced else depth + 1 """ if root is None: return 0 left = __get_depth(root.left) right = __get_depth(root.right) if abs(left-right) > 1 or -1 in [left, right]: return -1 return 1 + max(left, right) # def is_balanced(root):# """# O(N^2) solution# """# left = max_height(root.left)# right = max_height(root.right)# return abs(left-right) <= 1 and is_balanced(root.left) and# is_balanced(root.right) # def max_height(root):# if root is None:.
x <- bubblesort(sample(1:6, size=5, replace=T)) if (x[1]==x[5]){ hand <-"Yahtzee" } else if (x[1]==x[4] ] x[2]==x[5]) { hand <- "4ofKind" } } else { hand <-"Chance" } The above code lays this out for Yahtzee and 4 of a kind. Find statements that work for the rest and put this into a function called get hand , which returns what type of hand was rolled from a sorted roll of five dice. Make sets of rolls and test them to make sure they work. Note that above we use an else if, which allows us to test multiple conditions in an if-else statement.
# define stemmer functionstemmer = SnowballStemmer('english') # tokenise datatokeniser = TreebankWordTokenizer()tokens = tokeniser.tokenize(data) # define lemmatiserlemmatizer = WordNetLemmatizer() # bag of wordsdef bag_of_words_count(words, word_dict={}): """ this function takes in a list of words and returns a dictionary with each word as a key, and the value represents the number of times that word appeared""" for word in words: if word in word_dict.keys(): word_dict[word] += 1 else: word_dict[word] = 1 return word_dict # remove stopwordstokens_less_stopwords = [word for word in tokens if word not in stopwords.words('english')] # create bag of wordsbag_of_words = bag_of_words_count(tokens_less_stopwords) Use the stemmer and lemmatizer functions (defined in the cells above) from the relevant library to find the stem and lemma of the nth word in the token list. Function Specifications: Should take a list as input and…
Not allowed to add variables in brackets next to originIndex * @return index of the point that is closest to the origin, which is (0, 0) In * case of a tie, return the lowest index */ public int closestToOriginIndex() {
What happens when a programmer attempts to access a node's data fields when the node variable refers to None? How do you guard against it? *PYTHON
data structures in java
Python question Analysis: Invariants (Q16-17) For each of the following functions, identify the loop invariant, exit condition and post condition. Question 16 (Invariant 1) This function returns the list of integers that are multiples of both 3 and 7 that occurs within a given list. Identify the loop exit condition, the loop post-condition, and the loop invariant at the end of the loop, which shows the algorithm’s correctness. def multiples_count(lst): """ Input: a list of integers, lst Output: the list of integers in lst that are multiples of both 3 and 7 """ res = [] for i in range(len(lst)): if lst[i]%3 == 0 and lst[i]%7 == 0: res.append(lst[i]) # Identify the loop invariant here return res Question 17 (Invariant 2) This function checks if a given list (of comparable elements) is sorted in ascending order. Identify the loop exit condition, the loop post-condition, and the loop invariant at the end of each iteration of the loop, which…
MCQ272: The Mobile Application Protocol (MAP) typically runs on top of which protocol ? a. SNMP (Simple Network Management Protocol) b. SMTP (Simple Mail Transfer Protocol) c. SS7 (Signalling System 7)
IN PYTHON THANK YOU
//Can you explain how this code work or the meaning of this code?#include <iostream>using namespace std;struct Node {int data;struct Node *next;};struct Node* head = NULL;struct Node* rhead = NULL;int count1;//insert at front for reverselistvoid insertfront(int data){Node* new_node = (Node*) malloc(sizeof(Node)); new_node->data = data; new_node->next = rhead; rhead=new_node;}//insert at endvoid insert(int new_data){Node* ptr;ptr = head;Node* new_node = (Node*) malloc(sizeof(Node)); new_node->data = new_data; new_node->next = NULL;if (head == NULL) { head = new_node; } else{while (ptr->next!= NULL) { ptr = ptr->next;}ptr->next=new_node;}count1++;}//display listvoid display() {struct Node* ptr;ptr = head;if(head==NULL){cout<<"Sorry the list is empty";return;}while (ptr != NULL) {cout<< ptr->data <<" ";ptr = ptr->next;}cout<<endl;}//delete datavoid deletedata(int data){Node* ptr,*ptrpre;ptr = head;if (head == NULL) {…