XC++456 ▾Subscribe to see which companies asked this question.Related Topics ▾Similar Questions ▼789,1 class Solution {2 public:int3▾012345101112135:1914First Unique Charact...leetcode.com{i++) {15 };LeetCode}firstUniqChar(string s) {unordered_map m;for (int i=0; i

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class Solution { public: int i++) { { firstUniqChar(string s) { unordered_map m; for (int i=0; i

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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import java.util.Arrays; public class DrawX {public static void main(String[] args) {DrawX sample = new DrawX(5); char[][] testArray = sample.generateArray(); for (int i = 0; i < testArray.length; i++) {System.out.println(Arrays.toString(testArray[i])); } } private int size; public DrawX(int size) {this.size = size; }public char[][] generateArray() { char[][] xArray = new char[size][size]; // TODO return xArray; } Java Question: modify code to make output satisfy when size is... Test 1 (size = 3) [*, , *] [ , *, ] [*, , *] Test 2 (size = 5) [*, , , , *] [ , *, , *, ] [ , , *, , ] [ , *, , *, ] [*, , , , *] Test 3 (size = 10) [*, , , , , , , , , *] [ , *, , , , , , , *, ] [ , , *, , , , , *, , ] [ , , , *, , , *, , , ] [ , , , , *, *, , , , ] [ , , , , *, *, , , , ] [ , , , *, , , *, , , ] [ , , *, , , , , *, , ] [ , *, , , , , , , *, ] [*, , , , , , , , , *]
Implement a __setitem__ function that also supports negative indices. For example: W = L2(Node(10, Node(20, Node(30))))print W[ 10, 20, 30 ] W[1]=25print W[ 10, 25, 30 ] W[-1]=35print W[ 10, 25, 35 ] Complete the code: def L2(*args,**kwargs): class L2_class(L): def __getitem__(self, idx): <... YOUR CODE HERE ...> def __setitem__(self, idx, value): <... YOUR CODE HERE ...> return L2_class(*args,**kwargs) W = L2(Node(10, Node(20, Node(30))))print(W)W[1]=25print(W)W[-1]=35print(W)
Given an array of integers, return an array with all duplicates removed. public class RemoveDuplicatesFromArray{public static int[] solution(int[] nums){// ↓↓↓↓ your code goes here ↓↓↓↓return new int[0];}}
Computer Science PLEASE HELP TO CONVERT THIS FOR LOOP TO FOREACH LOOP using System;using System.Collections.Generic; namespace SwinAdventure{public class IdentifierableObject{//field ,datapublic List<string> Identifier = new List<string>(); //constructorpublic IdentifierableObject(string[] ident){for (int i = 0; i < ident.Length; i++){Identifier.Add(ident[i]);}} // Methodpublic void AddIdentifier(string id){Identifier.Add(id.ToLower());} // propertiespublic string FirstID{get{return Identifier[0];}} public bool AreYou(string id){for (int i = 0; i < Identifier.Count; i++){if (Identifier[i] == id.ToLower()){return true;} }return false;}}}
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public class ArraySection { static void arraySection(int a[], int b[]) { int k = 0; int [] c = new int[a.length]; for(int i = 0; i < a.length; i++) { for(int j = 0; j < b.length; j++) if(a[i] == b[j]) c[k++] = a[i]; } for(int i = 0; i < k; i++) System.out.println(c[i]); System.out.println(); } public static void main(String[] args) { int a[] = { 1, 2, 3, 4, 5 }; int b[] = { 0, 2, 4,5 }; arraySection(a,b); }} Calculate the algorithm step number and algorithm time complexity of the above program?
public ArrayList<Bus> loadBuses(String bfile) { ArrayList<Bus> buses = new ArrayList<>(); try { Scanner scanner = new Scanner(new File(bfile)); while (scanner.hasNextLine()) { String[] line = scanner.nextLine().split(" "); if (line.length < 4 || line.length > 7) { throw new IllegalArgumentException("Invalid input format"); } String name = line[1]; int size = Integer.parseInt(line[1]); int price = Integer.parseInt(line[2]); int level = Integer.parseInt(line[3]); Ministry ministry = null; if (line.length > 5) { ministry = new Ministry(line[5]); } int competitorArea, numSecurity, barArea; Bus bus; SportsBus sportsBus; PartyBus partyBus;…
public class arrayOutput ( public static void main (String [] args) { final int NUM ELEMENTS = 3; int[] userVals = new int [NUM_ELEMENTS]; int i; } Type the program's output userVals [0] = 2; userVals [1] = 6; userVals [2] = 8; for (i = userVals.length - 1; i >= 0; −−1) { System.out.println(userVals [1]); } C.C. ? ? ??
import java.util.*;public class Print { public static void main(String args[]) { List<Integer> myList = Answer; myList.add(100); myList.add(new Integer(1)); myList.add(1); myList.add(new Integer(200)); myList.add(2); Answer{ System.out.println(i); } System.out.println("sorting..."); Answer; //sorts the elements for (Integer i: myList){ System.out.println(i); } }}
import java.util.Scanner; public class Playlist { // TODO: Write method to ouptut list of songs public static void main (String[] args) { Scanner scnr = new Scanner(System.in); SongNode headNode; SongNode currNode; SongNode lastNode; String songTitle; int songLength; String songArtist; // Front of nodes list headNode = new SongNode(); lastNode = headNode; // Read user input until -1 entered songTitle = scnr.nextLine(); while (!songTitle.equals("-1")) { songLength = scnr.nextInt(); scnr.nextLine(); songArtist = scnr.nextLine(); currNode = new SongNode(songTitle, songLength, songArtist); lastNode.insertAfter(currNode); lastNode = currNode; songTitle = scnr.nextLine(); } // Print linked list…
convert C++ STL code into Python:int main(){ // empty map container map<int, int> gquiz1; // insert elements in random order gquiz1.insert(pair<int, int>(1, 40)); gquiz1.insert(pair<int, int>(2, 30)); gquiz1.insert(pair<int, int>(3, 60)); gquiz1.insert(pair<int, int>(4, 20)); gquiz1.insert(pair<int, int>(5, 50)); gquiz1.insert(pair<int, int>(6, 50)); gquiz1.insert(pair<int, int>(7, 10)); // printing map gquiz1 map<int, int>::iterator itr; cout << "\nThe map gquiz1 is : \n"; cout << "\tKEY\tELEMENT\n"; for (itr = gquiz1.begin(); itr != gquiz1.end(); ++itr) { cout << '\t' << itr->first << '\t' << itr->second << '\n'; } cout << endl; return 0;}
JavaTimer.java: import java.util.Arrays;import java.util.Random; public class JavaTimer { // Please expand method main() to meet the requirements.// You have the following sorting methods available:// insertionSort(int[] a);// selectionSort(int[] a);// mergeSort(int[] a);// quickSort(int[] a);// The array will be in sorted order after the routines are called!// Be sure to re-randomize the array after each sort.public static void main(String[] args) {// Create and initialize arraysint[] a = {1, 3, 5}, b, c, d;// Check the time to sort array along startTime = System.nanoTime();quickSort(a);long endTime = System.nanoTime();long duration = (endTime - startTime) / 1000l;// Output resultsSystem.out.println("Working on an array of length " + a.length + ".");System.out.println("Quick sort: " + duration + "us.");}// Thanks to https://www.javatpoint.com/insertion-sort-in-javapublic static void insertionSort(int array[]) {int n = array.length;for (int j = 1; j < n; j++) {int key = array[j];int…