Remove Duplicate Elements In Array Using With Java

Apr 30, 2014

remove duplicate elements in array using with java

View Replies


ADVERTISEMENT

Removing Duplicate Elements From Array

Dec 18, 2014

I was trying remove duplicates element from my array without using collection API but i didn't got any output from my code.Although it is compiled successfully but on execution it didn't give any output. I guess there must be some problem in function Duplicate

Java Code:

class Union {
public static void main(String...s) {
Union M=new Union();
int x[]=new int[]{1,0,1,4,10,10,10,3,567,4,3,33};
int y[]=new int[]{5,4,5,4,5,4,2,3,3,1,0};
int []w=M.merge(x,y);

[Code] .....

View Replies View Related

Eliminating Duplicate Elements In XML File Using Stax Parser

May 20, 2015

I want to eliminate duplicate element in xml file using stax parser.

View Replies View Related

Remove Multiple Elements From ArrayList?

Dec 27, 2014

I have an ArrayList of tens of thousands of elements, and want to remove the items at a given set of sorted indices like {1,5,29,318,499,583}. It seems like this operation could be performed in linear time and space by first finding a cumulative sum of the shifts needed to move everything to their right positions and then shifting every item. On the other hand, removing and shifting one by one would seem to require many more shifts. Is there a way to do this in Java's ArrayList?

View Replies View Related

Declare Array Of 50 Elements Of Type Double - Print Output 10 Elements Per Line

Feb 5, 2015

import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
public class array
{
public static void main(String[] args)

[Code] ...

Is there a way to write this, where, alpha is one array.

Write a program that declares an array "alpha" of 50 elements of type "double". Initialize the array so that the first 25 elements are equal to the square of the index variable and the last 25 elements are equal to three times the index variable. Output the array so that 10 elements per line are printed.

If I have an array of 50 integers, can I break that to read in lines of 10?

View Replies View Related

Printing Array Elements In Java

Oct 15, 2014

I have tried to print array elements using standard print statement. I am getting errors. How to print them. Here is my code:

class arrayEx1{
public static void main(String args[]) {
int a[]=new int[3]; //Declaring Single Diomentional Array
a[0]=10;
a[1]=20;
a[2]=30;
int total=a[0]+a[1]+a[2];
System.out.println("Values stored in a[0],a[1],a[2]elements are :" + a[0] a[1] a[2]);
System.out.println("Total values of a[0],a[1],a[2]elements is :"+ total);
}
}

if i give comma (,) in between above print stament (print statement 1) stil i am getting errors.

View Replies View Related

Method That Returns New Array By Eliminating Duplicate Values In Array

Jun 15, 2014

Write a method that returns a new array by eliminating the duplicate values in the array using the following method header: public static int[] eliminateDuplicates(int[] list). The thing is that I found the working solution that is written below, but how it works. How to eliminateDuplicates method done with flag and flag2.

Here is the code:

Java Code:

import java.util.Scanner;
public class Exercise06_15 {
public static void main(String[] args) {
java.util.Scanner input = new java.util.Scanner(System.in);
int[] numbers = new int[10];
System.out.println("Enter ten numbers: ");

[code]....

View Replies View Related

Java Recursion Method Is Not Working - Summing Elements In Array

Feb 2, 2015

I am trying to sum up the elements of an array. When I test my code the sum is always off by one. For example if I input: 20, 40,30 it gives me 89 instead of 90.

This is what I have so far:

public static void main(String[args]){
int size = kbd.nextInt();
int [] myArray = new int [size]
//user inputs the elements of array

[Code]....

View Replies View Related

How To Search Array Elements Present Or Not Using Command Line Argument In Java

Mar 15, 2014

how to search array elements present or not using command line argument in java

View Replies View Related

JSF :: Create A List Or Array Of Child Elements To Feed To Java Bean

Feb 5, 2014

I have a project I am currently working on using Primefaces and MySQL. I have a page that will display information queried from the database. I have textfields that will display the data from a given record. But I want to ensure that the displayed data cannot be altered. I decided on disabling the textfields unless the create or edit button were clicked. At which point all textfields will be enabled for editing, and cleared if create button was clicked. I want to push the disabling/enabling of the elements back to a managed bean, but I want to have the bean take in two lists or arrays, one containing all elements by ID and one containing a list of exempt elements. Is there a way I can create a List or Array of the ID's that I can send to the bean? I know little in Javascript and previous attempts to implement it have met with little success.

A short example of the code:

<p:tabView>
<p:tab id=pmDBTab title="PM Database Tab">
<p:panelGrid id="projectInfo">
<p:row id="rowOne">
<p:column id="r1c1" colspan="2">
<p:outputLabel id="searchLabel" for="searchField" value="Search: " style="font-weight: bolder"/>

[Code] ....

I want to create a list that would contain all and another that would contain the exemptions such as searchField, searchCriteria, searchButton, projectList and viewButton. The actual exemption list is far smaller than the list of all children. I have found sources that can disable the elements with a java bean, but I have not been able to find one that would allow me to define those that should and should not be disabled, then vice versa for enabling.

View Replies View Related

Identify Duplicate Line And Print Them As Duplicate Found

Apr 6, 2014

I have a java file 'Arithmetic.java', in which i have 2 overridden method.Now i wanted to read this file and i need to print all the method signature lines,if i found same(overridden method)signature then i have to print "overridden method found". once i find the overridden method i have to suffix the method name as methodName_overridden1, methodName_overridden2 and so on...

package com.abcd.arithmetic;
public class AllArithmatic
{
public Integer add(int x,int y,int z)
{
return (x+y-z);
}
public Float substract(float x, float y)

[code]....

till now i am able to read the lines, able to read the method names as well. but while putting the entire method signatures into an string array and the suffixing part , i am not able to proceed. The condition i have put to find out oerridden method is nnot working.i am stucked in comparing the duplicate method

//Finds Method Name, Method Return Type
if(indexOfMethod >-1 && indexOfOpenBrace >-1){
int uniqueWordsInFile=0;
//Method signature Start
//System.out.println("method line="+line.trim());
List<String> methodList = new ArrayList<String>();
methodList.add(line.trim());

[code]....

View Replies View Related

Add Elements To 2D Array Without Losing Elements

Jan 12, 2015

I am trying to make a 2d array that keeps track of comparison counts. what I have so far works ok but writes over the previous elements with 0. can't seem to find where I am re-initializing the previous elements.

//this is one of my fill sort arrays

public void fillSelectionArray(int index, long countSum) {
//rand = new Random( );
//for ( int i = 0; i < listsize; i++) {
selectionList[ index -1] = countSum;
// }

[Code] ....

I know I am missing something just not sure what.

View Replies View Related

Finding Duplicate Values In Array List

Jul 8, 2014

I am working on this project that wants me to write a program that inputs 20 numbers, each of which is between 10 and 100, inclusive. As each number is read, display it only if it is not a duplicate of a number already read. The only part I am confused about is how to go about checking for duplicate values that the user may enter. And IF the user does input a duplicate value, it should not be stored again.In addition, the value entered should be printed out after it is entered along side the value that have been previously entered by the user such as:

23
23 45
23 45 67
23 45 67 12
and so on.

I am still fairly new at java programming.

import java.util.*;
public class NumberArray
{
public static void main(String[] args) {
// declare an array with 5 elements

[code]....

View Replies View Related

Avoid Reprinting Of Duplicate Values In Array

Mar 28, 2014

I have a practice program (written with NetBeans IDE 7.4) that calls methods to:

(1) fill an array with user input values

(2) sort the array values into ascending order

(3) print the array in assorted order.

(4) print the array without any duplicates

Method (4) prints the contents of the array without printing any duplicates. That is, if a number in the array has already been printed, it will not be printed again.

Method (4) seems to work, but may be inefficient or I may have done too much work making it difficult on myself or making the logic too confusing.

Is there a better way to do this WITHOUT using built-in functions in Java's library?

(Such as writing this method using for loops and counter variables: As practice I am supposed to avoid using Deleting functions for duplicates)

Here is my code:

public static void Duplicates(int [] array){
int duplicates = 1;
String Output = "";
for(int i = 0; i < array.length -1; i++) {
if (array[i] != array[i+1]){
duplicates ++;

[Code] .....

View Replies View Related

Nested For Loops - Check If There Is A Duplicate Element In The Array

Aug 4, 2014

Nested for-loops always throw me in a loop.I found a snippet that uses 2 for-loops to check if there is a duplicate element in the array:

/*
* brute force way of checking if array contains duplicates in Java comparing each elements to all other elements of array complexity on order of O(n^2) not advised in production
*/
public static boolean bruteforce(String[] input) {
for (int i = 0; i < input.length; i++) {
for (int j = 0; j < input.length; j++) {
if (input[i].equals(input[j]) && i != j) {
return true;
}
}
}
return false;
}

Let us say we have:
String[] input = new String[] {"one","two","three","one"}

View Replies View Related

Create 2D Array Out Of CSV File And Find Number Of Elements To Determine Array Size

Mar 24, 2015

I am taking the Class Algorithms and Datastructures and got an assignment for Lab that really throws me off. The goal is to create an Array out of a given CSV file, implement several Methods that get the size of array, etc.

I am still stuck in the first part where the CSV has to be imported into the Array. My problem is that I need a mechanism that figures out the needed size for the Array, creates the array, and only then transfers the data from the CSV.

The list consists of the following wifi related values:

MAC-Adress, SSID, Timestamp, Signalstrength.

These are on the list, separated by comma. The Columns are each of these, and the rows are the four types of values making up the information on a certain wifi network.

The catch is, we are not allowed to use any of the following:

java.util.ArrayList
java.util.Arrays
and any class out of java.util.Collection.

So far I used the BufferedReader to read in the file and tried to implement the array, but I get an arrayindexoutofboundsexception.

Below is my Code (Its still an active construction zone):

public class WhatsThere {
public WhatsThere(String wifiscan) throws IOException {
}
public static void main(String[] args) throws IOException {
// WhatsThere Liste = new WhatsThere(String wifiscan);
String[][] arrayListe = new String[0][0];

[Code] ....

View Replies View Related

Adding Duplicate Keywords To Java Language

Oct 26, 2014

Is there any way to add duplicate keywords (for all java keywords) maybe in a different language such that we can program java in a different language.

View Replies View Related

Make Array From Some Elements Of Another Large Array?

Jan 22, 2015

When I insert: title, category, year, artist in 4 Strings And when I press "enter" i put those 4 in a array "large", and then when I can start a new music insert with 4 new string elements and add those in the large array..So: I have an array "large" with the length 19 (or so..)(max ~100 or so)Then I what to: get,in a new array "title",the elements:0,4,8,12,16 (from the large array) and put them in a scrollable list. And when I select one element in the title array I then whant to get 3 remaining elements from this. And put it in a array called selection.

So the "large" and the "title" arrays must be dynamically sizes... or be copied to a larger sized..

1 can it be done with arrays?
2 how do dynamically change the size of for example the array "title"?
3 how do I receive the elements 0,4,8,12,16 and so on, (to (
large.length-3) and add it to the title array?

View Replies View Related

Java Program - Asking User For Two Strings And Using Duplicate Function

Jul 4, 2014

Am i doing this right?

public class TwoStrings
{
public static String duplicate (String s) {
String t = s + s;
return t;

[Code] ....

View Replies View Related

Better Way To Remove Null Values From Array

Dec 1, 2014

Is there a better way to remove null values from an array than what I have tried? This works just fine, but I just get the feeling that there is a better way to do this, without using the JCF.

private static String[] removeNullValues(String[] list){
int count = 0;
for(int i = 0; i < list.length; i++){
if(list[i] == null)
count++;

[Code] ....

I technically dont need to remove the null values for the project that I'm working on (since I just print it out and I can avoid null values with a simple statement like

if(update[i] != null) SOP(update[i])
),

but I'm just curious.

View Replies View Related

Sum Of Array Elements?

May 4, 2015

What is the sum of the array ar elements after executing the following code?

int[] ar = {1,2,3,4,5};
for (int i=0; i<ar.length-1; i++)
if (i%2==0) ar[i]=i;

My professor says the answer is 12 i dont know how he got that answer

View Replies View Related

Max And Min Of Elements In Array

May 17, 2014

I cant get this code to work if wont find the right min and range and its printing out my max three times . This is what I got

public static void main(String[] args)
{
double [] Rainfall = new double[12];
Rainfall[0] = 77.4;
Rainfall[1] = 56;
Rainfall[2] = 61.8;
Rainfall[3] = 62.1;
Rainfall[4] = 57.1;

[Code] ....

View Replies View Related

How To Copy Elements Of One Array Into Another

Mar 29, 2015

I have two arrays

private ReservedBook[] reservedBooks;
private LibrarySystem[] libraryBooks;

The library array has two books and I want to copy one of them to the reserved books when you type in the ISBN

public void borrowBook(String ISBN)
{
int i = 0;
if(numberOfBooks < MAX_BOOKS-1)
{
if(libraryBooks[i].getBookISBN().equals(ISBN))
{
for(i=0;i<MAX_BOOKS-1;i++)
reservedBooks[i] = libraryBooks[i];
}
else System.out.println("There is no such book");
}
else System.out.println("You have reached the maximum number of allowed books");
}

It shows me error: incompatible types - LibrarySystem cannot be converted into ReservedBook. How can I fix it?

View Replies View Related

Compare Elements Within Array?

Oct 27, 2014

So I am trying to create a code that searches if a word is square free. The user inputs a word (into an array) and then the code is suppose to see if it is square free. A word being square free means that the word doesn't contain any consecutive sub words. For example, "abcabc" is not a square free word because abc is repeated, but "abcdabc" is a square free word because there is a "d" separating the "abc".

So far I have this :

import java.util.Scanner;
public class A3Q2 {
public static void main(String[] args) {
// part (a) of the main
Scanner keyboard = new Scanner(System.in);

[Code] ....

I've been trying to experiment with different ways such as checking to see if there any duplicate elements such as,

public static char isSquareFree(char[] word){
for(char i = 1; i < word.length; i++) {
if(word[i] == word[i - 'a']) {
System.out.println("Duplicate: " + word[i]);
}
}
return word; }
}

And other methods but I'm just not getting it.

View Replies View Related

Find And Remove All Occurrences Of Given Integer And Return Amended Array

Jan 12, 2014

Question - Given an specific integer and an array of integers, find and remove all occurrences of the given integer and return an amended array. I solved it. Here is my solution -

public static void main(String[] args) {
int[] nums = {1, 2, 3, 4, 4, 4, 5, 6, 7, 8, 8, 8, 8, 7, 7, 9};
int input = 8;
int newLen = nums.length;
for(int i=0; i<newLen; i++){
if(nums[i] == input){

[Code] ....

View Replies View Related

Removing Unwanted Elements In Array

Mar 20, 2014

public class werek4d {
public static void main(String[] args) {
int counter = 1;
int[] anArray = new int[101] ;
for (int i = 0; i <= 99; i++){
anArray[i] = i + 1;
System.out.println(i + ": " + anArray[i] + " ");

[Code] ....

My aim is to generate a lists containing 1 to 100. I will then count the number of integers divisible by 3. After doing so, I want to delete the integers that are NOT divisible by 3 in the lists. I tried doing it, but I seem to keep on getting the same lists.

View Replies View Related







Copyrights 2005-15 www.BigResource.com, All rights reserved