For the below code, what will be printed? public class mathchar { public static void main(String[]...
For the below code, what will be printed?
public class mathchar
{
public static void main(String[] args)
{
int i = 81, j = 3, k = 6;
char w = 'f';
System.out.printf("%.2f\n", Math.sqrt(i));
System.out.printf("%.2f\n", Math.pow(j,k));
System.out.printf("%c\n", Character.toUpperCase(w));
System.out.printf("%c\n", Character.toLowerCase(w));
System.out.printf("%d\n", (int)(Math.random() * 21 + 6));
/* just tell range of possible values */
}
}
Homework Answers
ANSWER: I have run your code and the output is :
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For the below code, what will be printed?
public class mathchar
{
public static void main(String[]...
What is printed by running the following code? public static void main(String[] args) { int[] nums...
What is printed by running the following code? public static void main(String[] args) { int[] nums = {2, 3, 4}; int n = 5; changeMe1(n, nums); System.out.print( n ); System.out.print(nums[0]); changeMe2(n, nums); System.out.print( n ); System.out.print(nums[0]); } public static void changeMe1(int number, int[] list) { number++; list[0]++; } public static void changeMe2(int number, int[] list) { number = 9; list = new int[1]; list[0] = 99; }
Question 2: Execute the following program. import java.util.Arrays; public class ArrayManipulations { public static void main(String[]...
Question 2: Execute the following program. import java.util.Arrays; public class ArrayManipulations { public static void main(String[] args) { // sort doubleArray into ascending order char [] A = {'g', ', 'y', 'a', 'e','d' }; Arrays.sort( A); for (char value: A) System.out.printf("%2C", value); System.out.printf("\n"); char [] A Copy = new char[ 3 ]; System.arraycopy( A, 2, A Copy, 0, A Copy.length); for(char value: A Copy) System.out.printf("%2C", value); System.out.printf("\n"); int location = Arrays.binary Search(A Copy, 'y'); if(location >=0) System.out.printf("y Found at element...
What does this program print? package javaapplication210; public class JavaApplication210 { public static void main(String[]args){ System.out.printf("Result...
What does this program print? package javaapplication210; public class JavaApplication210 { public static void main(String[]args){ System.out.printf("Result is: % d/n", mystery (-5, -9));//System.out.printf("Result is: % d/n", mystery (-4, -8));//System.out.printf("Result is: % d/n", mystery (-6, -7));//} public static int mystery(int a, int b) { if(b - 1) returns a; else return a + mystery(a, b + 1); } }
import java.util.Random; import java.util.ArrayList; /** * */ public class hw5_task8 { public static void main(String[] args)...
import java.util.Random; import java.util.ArrayList; /** * */ public class hw5_task8 { public static void main(String[] args) { int[] grades = randomIntArr(10); printIntArray("grades", grades); ArrayList<Integer> indexesF_AL = selectIndexes_1(grades); System.out.println(" indexesF_AL: " + indexesF_AL); int[] indexesF_Arr = selectIndexes_2(grades); printIntArray("indexesF_Arr",indexesF_Arr); } public static int[] randomIntArr(int N){ int[] res = new int[N]; Random r = new Random(0); for(int i = 0; i < res.length; i++){ res[i] = r.nextInt(101); // r.nextInt(101) returns an in in range [0, 100] } return res; } public static void...
Review the following code: public class Looping { public static void main(String[] args) { ...
Review the following code: public class Looping { public static void main(String[] args) { for (int i = 1; i <= 5; i++) { for (int j = 1; j <= 5; j++) { System.out.println(i + " x " + j + " = " + (i * j)); } } } } What is the output from the code above? Replace this text with your solution What happens if you change the...
What are the first five lines printed from this code and why? public class LoopQ {...
What are the first five lines printed from this code and why? public class LoopQ { public static void main(String[] args) { for(char c = 'A'; c < 'Z'; c++) { for(int i = 0; i < 2; i++) { System.out.println("seat "+c+i); } } } }
1. Analyze the following code: public class Test implements Runnable { public static void main(String[] args) { Thread t = new Thread(this); t.start(); } public void run() { System....
1. Analyze the following code: public class Test implements Runnable { public static void main(String[] args) { Thread t = new Thread(this); t.start(); } public void run() { System.out.println("test"); } } 1. The code compiles but will not print anything since t does not invoke the run method. 2. The code will not compile since you cannot invoke "this" in a static method. 3. The program compiles, runs, and prints tests on the console. 2. What will the following example...
import java.util.Arrays; public class lab { public static void main(String args[]) { int...
import java.util.Arrays; public class lab { public static void main(String args[]) { int arr[] = {10, 7, 8, 9, 1, 5,6,7}; int arr2[] = {9, 8, 7, 6, 5, 4, 3, 2, 1}; int arr3[] = {1, 3, 5, 3, 2, 6, 20}; quicksort(arr,0,arr.length-1); quicksort(arr2,0,arr2.length-1); quicksort(arr3,0,arr3.length-1); System.out.println(Arrays.toString(arr)); System.out.println(Arrays.toString(arr2)); System.out.println(Arrays.toString(arr3)); } private static int partition(int[] items,int low, int high) { int i=0; int j=0;...
import java.util.Scanner; public class TriangleMaker { public static void main(String[] args) { //...
import java.util.Scanner; public class TriangleMaker { public static void main(String[] args) { // TODO Auto-generated method stub System.out.println("Welcome to the Triangle Maker! Enter the size of the triangle."); Scanner keyboard = new Scanner(System.in); int size = keyboard.nextInt(); for (int i = 1; i <= size; i++) { for (int j = 0; j < i; j++) { System.out.print("*"); } System.out.println(); } for (int...
What is wrong the following code? Explain. public class Test { public static void main(String[] args)...
What is wrong the following code? Explain. public class Test { public static void main(String[] args) { A a = new A(5.0); } class A { int value = 2; } }
Question 2: Execute the following program. import java.util.Arrays; public class ArrayManipulations { public static void main(String[] args) { // sort doubleArray into ascending order char [] A = {'g', ', 'y', 'a', 'e','d' }; Arrays.sort( A); for (char value: A) System.out.printf("%2C", value); System.out.printf("\n"); char [] A Copy = new char[ 3 ]; System.arraycopy( A, 2, A Copy, 0, A Copy.length); for(char value: A Copy) System.out.printf("%2C", value); System.out.printf("\n"); int location = Arrays.binary Search(A Copy, 'y'); if(location >=0) System.out.printf("y Found at element...
What does this program print? package javaapplication210; public class JavaApplication210 { public static void main(String[]args){ System.out.printf("Result is: % d/n", mystery (-5, -9));//System.out.printf("Result is: % d/n", mystery (-4, -8));//System.out.printf("Result is: % d/n", mystery (-6, -7));//} public static int mystery(int a, int b) { if(b - 1) returns a; else return a + mystery(a, b + 1); } }
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