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For this assignment, you will manipulate an input String using String functions. The first input will be a String of any length that you will be manipulating. The second input String will be a "pivot" String that is used to shuffle around the contents of the first input String.

If the pivot String is found somewhere inside of the first input String, then you will swap the contents of the first input String that appear before and after the pivot String. For example, if the first input is "OneTwoThree", and the pivot String is "Two", your output will be "ThreeTwoOne". Note that the contents of the first input String before and after the pivot String have been swapped, but the order of characters within those substrings remains the same.

Can you help me with this. I have no desire to do this and it's for a grade.
Explain what is difference between Pass-by-value and Pass-by-reference argument passing to a function .show the difference by example.
Design and implement a set of classes that define the employees of a hospital :doctor ,nurse ,administrator, surgeon receptionist ,janitor , and so on. include method in each class that are named according to the services provided by that person (e.g. treats patients..so treats() is a suitable method ) and that print an appropriate message.create a main driver class to instantiate and exercise several of classes .(Hint. Use Inheritance
what is variable- length argument list ?. demonstrate by an example code.
what is copy constructor ?. give an example
Methods of indexing in information retrieval?
Write a Java program to
• create a new array list, add some colors (string) and print out the collection.
• insert an element into the array list at the first position.
• retrieve an element (at a specified index) from a given array list.
• update specific array element by given element.
Write a servlet that snoops all the information about the current session. Make a “registration” form that collects a first name, last name, and email address. Send the data to a servlet that displays it. Next, modify the servlet to use a default value in form(or give an error message) if the user omits any of the three required parameters.
How can the general tree (a b c d e f g) be represented as a binary tree with left=child, right=sibling?
public class Polynomial {

private static class TermNode{
private double coefficient;
private int exponent;
private TermNode next;

public TermNode(int exp, double coeff, TermNode nextTerm )
coefficient= coeff;
exponent = exp;
next = nextTerm;
private TermNode first;

public Polynomial() {
first = new TermNode(0,0, null);

public Polynomial(double a0)
first = new TermNode(0,a0,null);

public Polynomial(Polynomial p)
first = new TermNode(p.first.exponent, p.first.coefficient, p.first.next);

public void add_to_coef(double amount, int exponent) {
first = new Termnode(

public String toString() {

return s;

This is showing errors I am not able to implement it properly