Java Reverse Order Using Pointers?

Oct 9, 2014

This is what I have to do:Write a program that takes a string of someone's name and prints it out last name first. Your program must use pointers, not array subscripts. You may use the available string manipulation functions if you find an opportunity.

Example:

"George Washington"
"Washington, George"

I am not sure how to reverse the name, I have been looking in my textbook and online and cannot figure it out. This is what I have put together so far, it does not run. At the end it says unnecessary return value.

import java.util.*;
import java.util.Scanner;
public class Test {
public static void main ( String [] args ) {
Scanner sc = new Scanner(System.in); 
System.out.print("Enter name: ");
String name = sc.nextLine(); 
String lastname = "";
String firstname = "";
for(int i = 0; i < name.length(); i++) {
if(name.charAt(i) == ' ')

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Reverse Double Linked List In Java - Descending Order

Sep 12, 2014

I have the following double linked list and I'm supposed to order it descending (reverse) using the printInReverse() method; since the list orders itself ascending when the numbers are added, how could I order it descending in this method? Here's the code without implementing descending/reversing methods:

package test;
import java.util.Scanner;
public class MyList {
private Scanner userInput;
private Integer selectedOption;
private MyListElement firstElement = null;
private boolean exitRequested = false;

[Code] ....

I tried to declare a previousElement variable but I didn't figure out how I'd do that.

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Array In Reverse Order And Its Sum

Dec 3, 2014

This is how the for loop works for the row,right?

for(int i=array.length-1;i>=0;i--)
{
}

I want to know how the for loop works for the column?

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How To Reverse Order Of Words In A Sentence

Nov 29, 2012

I want to write an application that inputs a sentence, tokenizes the words with method split and reverse the words (not the letters)...I am stuck at the last part: how to reverse them...should I use the method reverse(); ?

Here is my code..

import java.util.Scanner;
import java.util.StringTokenizer;
public class ReversedWords {
//execute application
public static void main( String [] args) {
//get sentence

[code]....

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Reverse Order Array Output

Oct 10, 2014

I'm trying to make this code's output display like a sentence, since right now it displays downward and doesn' look right.

public class ReverseOrder {
public static void main(String[] args) {
String phrase = "The rain in Spain falls mainly on the Plain";
char[] phraseArray;
phraseArray = phrase.toCharArray();
for(int i = phraseArray.length - 1; i >= 0; i--){
System.out.println(phraseArray[i]);
}
} // end main
} // end ReverseOrder class

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How To Print TreeMap Values In Reverse Order

Apr 3, 2014

Below codes find the character frquency how to print this in reverse order using comparator or else

public static void main(String arr[]) {
String s="bebeao";
Map<Character,Integer> chars=new TreeMap<Character,Integer>();
for(int i=0;i<s.length();i++) {
char x=s.charAt(i);
Integer count=chars.get(x);
if(count==null)

[Code] .....

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Print Greetings With Names In Reverse Order And With Punctuation

Apr 10, 2014

Write an application, HiFour that prompt for four names and then prints the greetings, but with the names in reverse order and with punctuation as shown in the example.

Enter four names: Alice Bob Carol Dave

Hi Dave, Carol, Bob, Alice.

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Order Of Numbers - Reverse Array Program

Apr 23, 2015

import java.util.Scanner;

public class ReverseOrder {
public static Scanner input = new Scanner(System.in);
public static void main(String[] args){
int[] numbers;
double[] reverse;

numbers = readArray();
reverse = reverseOrder(numbers);

[Code] ....

I have to write a program that takes an order of numbers and print the reverse order of those numbers.

the out put i receive is:

How many numbers do you want to enter?
4
Please enter 4 integers separated by a space:
1 2 3 4
Your numbers in reverse order are:[D@1f96302

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Store String Input In Array And Print In Reverse Order

Apr 5, 2014

I have a college question ask me to write a class StringRevert which does the following:

-prompting user for an interger n
-creating an array of n string
-repeatedly read character string from user input and store them in the array until end of array is reached or user input -quit(quit should not saved in array)
-print the string from array in reverse order, from last enter to first enter.
-assume user always supplie correct input

This is what I've done so far but how to get it working.

import java.util.Scanner;
public class StringRevert {
public static void main(String[] args) {
Scanner in = new Scanner(System.in);
System.out.println("enter value of n: ");
int n1 = in.nextInt();
String[] n = new String[n1];

[Code] ....

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Display Contents Of File In Reverse Order - Output To Console

Jun 24, 2014

Create a class that allows the user to select a file and output the contents of the file to the console. Recommend using a text file to display, java files are text files. You may want to put this code in a method to allow you to complete the remainder of this assignment without overwriting your code.

- You should ask the user to enter the full path to your file to make certain you are processing the correct file.

- Modify your code/add a method to display the contents of the file in reverse order. You do not need to reverse the characters on each line but simply output the lines of the file in reverse order.

Hint: read the content of the file into an ArrayList and then traverse the ArrayList.

this is what i go so far.

package classActivity;

import java.io.File;
import java.io.FileNotFoundException;
import java.io.PrintWriter;
import java.util.ArrayList;
import java.util.Collections;
import java.util.Scanner;
public class Select
{
public static String enterFilePath()

[Code] ....

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Ask User To Store 10 Numbers In Array - Print In Order Entered And Reverse

Apr 15, 2014

Write a Java program that asks the user to store 10 numbers in an array. You should then print the array in the order entered and then print in reverse order. However, instead of putting all the information in the main, you should use a class called PrintIt. The PrintIt class should have an instance variable that is an array to hold the numbers. You should have a method that will print the array in the order entered. You will also need a method to print in reverse oder. Then create a tester class that asks the user to enter 10 numbers and puts them in an array.

So far I've got this.

public class printIt {
int i;
int [] numArr = new int [10];
public printIt () {
i = -1;

[Code] .....

Output:

Enter a number:

8
34

Forward:

8
34

Reverse:

34
8

end

what i want as an number is being able to print out 10 numbers but this only lets me do two numbers. Why is that so?

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Floating Point Numbers - Print Contents Of Array In Reverse Order

Feb 27, 2014

I am trying to do this assignment but I can't get the needed output.

Create a program that asks the user how many floating point numbers he wants to give. After this the program asks the numbers, stores them in an array and prints the contents of the array in reverse order.

Program is written to a class called ReverseNumbers.

Example output

How many floating point numbers do you want to type: 5

Type in 1. number: 5,4
Type in 2. number: 6
Type in 3. number: 7,2
Type in 4. number: -5
Type in 5. number: 2

Given numbers in reverse order:

2.0
-5.0
7.2
6.0
5.4

Java Code:

import java.util.Scanner;
public class apples {
public static void main(String[] args) {
Scanner reader = new Scanner(System.in);
double[] numbers;

[Code] .....

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Class Defined Under Another Class - Sorting Elements In Reverse Order

Jul 4, 2014

I have never seen a class defined under another class ....

class pe{
static class pqsort implements Comparator<integer>
public into compare(Integer one,Integer two)
return two-one;
}
}

First I want to know how class pqsort is defined under class pe ....

And how the comparator used in this example is sorting elements in reverse order

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Reverse A String In Java

Oct 7, 2014

Here is my code:

public class ReverseString {
public static void main(String args[]) {
//quick wasy to reverse String in Java - Use StringBuffer
String str = "The rain in Spain falls mainly on the plain";
String revString = new StringBuffer(str).reverse().toString();

[Code] .....

The requirements: The program runs but for some reason it is not meeting the requirements. use the String method toCharArray and a loop to display the letters in the string in reverse order.

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Java Linked List Reverse

Apr 12, 2014

I am creating a recursive method to reverse a linked list in java. It works the first time when I call it, but I want it to work where I call it a second time and it reverses it to the original state. How can I get that to work with this implementation?

public void reverseList() {
System.out.printf("%-16s%-3s%n", "Name", "Score");
System.out.println("--------------- -----");
reverseList(first);
} public void reverseList(Node aNode) {
if (aNode != null) {
reverseList(aNode.next);
System.out.printf("%-15s%6s%n" , aNode.name , aNode.score);
}
}

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Reverse Numbers Using Java Arrays

Feb 27, 2014

I am trying to do this assignment but I can't get the needed output. Create a program that asks the user how many floating point numbers he wants to give. After this the program asks the numbers, stores them in an array and prints the contents of the array in reverse order.

Program is written to a class called ReverseNumbers.

Example output

How many floating point numbers do you want to type: 5
Type in 1. number: 5,4
Type in 2. number: 6
Type in 3. number: 7,2
Type in 4. number: -5
Type in 5. number: 2

Given numbers in reverse order:
2.0
-5.0
7.2
6.0
5.4

My code:

import java.util.Scanner;
public class apples {
public static void main(String[] args) {
Scanner reader = new Scanner(System.in);
double[] numbers;
System.out.print("How many floating point numbers do you want to type: ");

[Code] .....

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Feb 19, 2015

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Expected result : Having the possibility to create a jar with the modified code without errors .....

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I'm not sure if I understand how this is done. Suppose that the random number r = 0000 1100 1000 1101. If we extract the 16 most significant bits from r; is the new number r = 0000 1100 or r = 0000 1100 0000 0000?

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Jan 8, 2015

I am just learning java now i have a problem where i have to run a test order on my internalOrder class from the orderTester class and i,m not sure how to do this ?

This is the code i have for my order class:

public static void testCase8(){
orders ords = new orders ("Pen", 8, -0.5);
System.out.println("Test Case 8:" + "
" + ords.getOrderDetails());

[Code] ....

This is the code for my Internal class

public final static double DISCOUNT = 0.4;
public InternalOrder(String productName,int quantity ){
super(productName, quantity,DISCOUNT);
}
public void printInternalReport(){
System.out.println("Printing internal report ...");
}

Now my orderTest class is passed though orders class if you need that code i will put it up...

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Jan 8, 2015

I have a problem where i have to run a test order on my internalOrder class from the orderTester class and I am not sure how to do this. This is the code i have for my orderTester class:

public static void testCase8(){
orders ords = new orders ("Pen", 8, -0.5);
System.out.println("Test Case 8:" + "
" + ords.getOrderDetails());

[Code] ....

this is the code for my Internal class

public InternalOrder(String productName,int quantity ){
super(productName, quantity,DISCOUNT); }
public void printInternalReport(){
System.out.println("Printing internal report ...");
}

Now my orderTest class is passed though orders class and intrenalOrder class if you need that code i will put it up.

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Jun 25, 2014

public class Ball {
private int a=show();
int b;
Ball()
{
b=20;
}
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System.out.println(new Ball().a);
}
private int show()
{System.out.println(b);
return b;
}
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Jun 25, 2014

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Write, compile, and test a Java class that displays these data items in a command window. Alternatively, you could also create it using a dialog box. Please include appropriate comments in your class.

Please named your class BusinessCard(LIM).java. (eq. BusinessCardLIM.java)

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Is there any way how to reverse a string value without using reverse(),length()?

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