public static void simpleLoop(int total) { String tmp = ""; for (int x = 0; x < total; x++) { tmp + (x + ","); } } } System.out.println(tmp.length()); public static void main(String[] args) { simpleLoop (2);

public static void simpleLoop(int total) { String tmp = ""; for (int x = 0; x < total; x++) { tmp + (x + ","); } } } System.out.println(tmp.length()); public static void main(String[] args) { simpleLoop (2);

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.*;class Arraylist{public static void main(String args[]){ArrayList obj = new ArrayList();obj.add("A");obj.add("B");obj.add("C");obj.add(1, "D");System.out.println(obj);}} What will the given code prints on the output screen.
public class SumOfDiagonals { public static void main(String[] args) { String[][] s1 = {{"2", "3", "4"}, {"5", "6", "7"}, {"8", "9", "10"}}; String[][] s2 = {{"1", "2", "3"}, {"5", "6", "7"}, {"9", "10", "11"}, {"13", "14", "15"}}; String[][] s3 = {{"1", "2", "3", "4"}, {"5", "6", "7", "8"}, {"9", "10", "11", "12"}, {"13", "14", "15", "16"}}; try { sumOfDiagonals(s1); sumOfDiagonals(s2); sumOfDiagonals(s3); } catch(NumberFormatException ex) { System.out.println("Not a valid integer"); } catch(IllegalArgumentException ex) { System.out.println("Array not a square"); } } public static void sumOfDiagonals(String[][] x) { //TODO Complete this method as required in the…
Complete the private combinations method. Modify the code so that it is possible to compute combinations(“ABCD”,2) with fewer than 20 calls and combinations(“ABCDE”,3) with fewer than 30 calls. import static org.junit.Assert.*; import java.util.ArrayList; import org.junit.Test; /** * Recursive computation of all combinations of k characters from a string s. * */public class Combinations { private static int recusiveCalls = 0; /** * Generate all combinations of the characters in the string s with length * k. * * @param s * a string. * @param k * the length of the combinations * @return a list of all of the combinations of the strings in s. */ public static ArrayList<String> combinations(String s, int k) { return combinations("", s, k); } /** * Recursive Problem Transformation: * * Generate all combinations of length k of the characters in rest prefixed * with the characters in…
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Rewrite the private static int recurseMax method without using Java API public class Recursion{ public static void main(String[] args){ // My tests (DO NOT MODIFY!) int[] a = {3,2,6,4,15,7,9,8,6}; p(recurseSum(a)); // Sum should be 60 p(recurseMax(a)); // Max should be 15 // End of tests! } // Recursive methods below here... public static int recurseSum(int[] a){ // TODO: This is the wrapper method. You must complete this AND implement helper method int total = recurseSum(a, a.length); return total; } private static int recurseSum(int[] a, int i){ if (i <= 0) return 0; return (recurseSum(a, i - 1) + a[i - 1]); } public static int recurseMax(int[] a){ int max = recurseMax(a, a.length); return max; } private static int recurseMax(int[] a, int i){ if(i == 1) return a[0]; return Math.max(a[i-1], recurseMax(a, i-1)); } //…
Write an application that displays the strings in the provided array alphabetically in ascending order. import java.util.*; public class StringSort { public static void main(String[] args) { String[] values = {"mouse", "dog", "cat", "horse", "cow", "moose", "tiger", "lion", "elephant", "bird", "hamster", "guinea pig", "leopard", "aardvark", "hummingbird"}; } }
For any element in keysList with a value smaller than 50, print the corresponding value in itemsList, followed by a space. Ex: If the input is: 32 105 101 35 10 20 30 40 the output is: 10 40 import java.util.Scanner; public class Compare { public static void main(String args[]) { final int SIZE_LIST = 4; int[] keysList = new int[SIZE_LIST]; int[] itemsList = new int[SIZE_LIST]; int i; Scanner input = new Scanner(System.in); keysList[0] = input.nextInt(); keysList[1] = input.nextInt(); keysList[2] = input.nextInt(); keysList[3] = input.nextInt(); itemsList[0] = input.nextInt(); itemsList[1] = input.nextInt(); itemsList[2] = input.nextInt(); itemsList[3] = input.nextInt(); //answer// System.out.println(); } }
a Java static method that will take an array of strings as its only parameter. The method will return the first string alphabetically (lowest) in the array.
Write an application that displays the strings in the provided array alphabetically in ascending order import java.util.*; public class StringSort { public static void main(String[] args) { String[] values = {"mouse", "dog", "cat", "horse", "cow", "moose", "tiger", "lion", "elephant", "bird", "hamster", "guinea pig", "leopard", "aardvark", "hummingbird"}; } } I need help with this!
Analyse the following code: public class Test { public static void main(String[] args) { int[] oldList = {1, 2, 3, 4, 5}; reverse(oldList); for (int i = 0; i < oldList.length; i++) System.out.print(oldList[i] + " "); } public static void reverse(int[] list) { int[] newList = new int[list.length]; for (int i = 0; i < list.length; i++) newList[i] = list[list.length - 1 - i]; list = newList; } } A. The program displays 1 2 3 4 5 and then raises an ArrayIndexOutOfBoundsException. B. The program displays 5 4 3 2 1. C. The program displays 1 2 3 4 5. D. The program displays 5 4 3 2 1 and then raises an ArrayIndexOutOfBoundsException.
Methods Details: public static java.lang.StringBuffer[] getArrayStringsLongerThan(java.lang.StringBuffer[] array, int length) Returns a StringBuffer array with COPIES of StringBuffer objects in the array parameter that have a length greater than the length parameter. If no strings are found an empty array will be returned. Parameters: array - length - Returns: Throws:java.lang.IllegalArgumentException - When a null array parameter is provided