I have the following code:
Java Code:
public class Equals {
String[] s1 = {"red", "white", "black", "blue"};
String[] s2 = {"red", "black", "green"};
String[] s3 = {"red", "green"}; mh_sh_highlight_all('java');
What I need is to give me the following output:
Select Strings: s1,s2,s3
Comparing String s1, s2, s3
red 3 matches.
black 2 matches.
green 2 matches.
I have the following code:
public class Equals {
String[] s1 = {"red", "white", "black", "blue"};
String[] s2 = {"red", "black", "green"};
String[] s3 = {"red", "green"};
What I need is to give me the following output:
Comparing String s1, s2, s3
red 3 matches.
black 2 matches.
green 2 matches.
How do I compare a String to each element of a string array?
For example:
int headscount = 0;
if (coins[i].equals("heads")){
headscount++;
System.out.println("b" + headscount);
}
This doesn't give me the right value because the IDE says that equals() is an incompatible type. I also tried changing the "heads" to an variable, but the results remains the same.
I would prefer using an Array!
I want to compere two element of string array by each other! eventually I want to print Yes or No in matrix . SO, I start reading data from file then split them into two parts .
File file= new File(fileName);
try {
inputStream = new Scanner(file);
while (inputStream.hasNext()){
String data= inputStream.next();
String [] token =data.split(",");
System.out.println("day"+token[0] +"embloyee name:"+ token[1]) ;
}
inputStream.close();
Now I want to compere each cell from token[0] by another array :
String[] day= { "Sunday", "Monday" ................};
if the days are equal then I want print yes in front of the employee name if not then i want to print No..is this gone work with me as I imagine it to be or do I have to take few more steps to get my code going?
I am new to Java and would like to ask how to do this question specifically:
Code a Java method that accepts a String array and a String. The method should return true if the string can be found as an element of the array and false otherwise. Test your method by calling it from the main method which supplies its two parameters (no user input required). Use an array initialiser list to initialise the array you pass. Test thoroughly.
I need to write a method that accepts an array of ints and squares each element of the array. No creating new arrays and no returning any values.
public void squareInts(int[] ints) {
for(int i = 0; i < ints.length; i++) {
ints[i] = (ints[i] * ints[i]);
}
}
I am trying some exercises on codingbat.com, and am stuck at the following program.
"Given a string, return true if it ends in "ly"."
With the following lines, if I type a print command instead of return, I get "ly". Yet if I aks to compare the result (which is "ly" as I can see with a print command) with == "ly", I get false?
What I also don't get, is that if I tye the programs in javascript, in that language the program works.
String str = "Oddly"
return ((str.substring(str.length()-2))== "ly");
}
Ok I am trying to compare a string to see if all characters are unique. If there is a library for this or a better way to approach this do tell. However I find it important to understand what is going on behind the scenes. The issue is that the program counts the spaces '/0' and therefore everything will never be unique.
public class CheckUnique
{
private String sentence = "This will be compard";
private char[] checker;
private String isUnique = "The sentence is unique";
private String notUnique = "The sentence is not unique";
[code]...
This program accepts Student ID numbers, Name, and grade point average. The problem I am having is with the if else statement that compares id to studentID[x]. I have tried to compare using if(id.equals(studentID[x])) and also I have tried using if(id == (studentID[x])) as shown in the code below. I keep getting incorrect results though.
//FILE: StudentIDArray.java
import javax.swing.*; //Used for the JOption dialog boxes
import java.util.*; //Used for Scanner input
[Code]....
what will i compare in if statemet is the 1st letter of each if i have code="a" and name="Angelina" first letter of each is "a" and "A" then in convert it to string so that i can make it uppercase but when i compare it in if statement it always go into "not x" but the ouput that im getting is x=A y=A then it always direct me into else statement.
String code = "a";
String name = "Angelina";
char c = code.charAt(0);
char n = name.charAt(0);
[code]...
I have been working on this assignment for a bit now. I seem to have most of the logic of it down, as far as I can tell, but I seem to have fallen into a bit of a brain lapse when it comes to invoking methods I've made in my main method. Here's the code:
package Module5;
import java.util.Scanner;
public class Exercise6Nine {
public static void main(String[] args) {
Scanner input = new Scanner(System.in);
System.out.println("Enter 10 numbers.");
double[] numbers = new double[10];
[Code] .....
My question is, in my main method, I have code in there to attempt to call my method "min" from below, and to use the result of the min's calculations and print them via my main. Only, I can't seem to properly invoke the method from my main method!
Also, if you could check over my min method and see if anything blatantly wrong is there and let me know, that would be great.
Looking over my question, and it seems there is no EDIT button, but I may as well put the assignment parameters here, since I asked for double checking on my method. Write a method that finds the smallest element in an array of double values using the following header:
public static double min( double[ ] array )
Write a test program that prompts the user to enter 10 numbers, invokes this method to return the minimum value, and displays the minimum value.
I have to make a program in which users inputs a number and the program should search into a two dimensional array and print out all the values that are below the number This is my first time experimenting with 2D Arrays and how to do this program I have the array set up
String firstarray[][]=
{{"", "Store101", "Store102", "Store103", "Store104"},
{"Tennis Shoes", "102", "54", "20", "78"},
{"Sweaters", "45", "25", "35", "75"},
{"Jeans", "12", "35", "45", "65"},
{"Shorts", "54", "25", "34", "45"},
{"Jackets", "15", "35", "50", "25"}
};
I have been trying to space out output on a Java console window so that I have three columns with 6 rows of data from three different arrays. The code I have so far outputs the data with no problem however the spacing between the columns is uneven. My loop so far is made up as follows
for (int i = 0; i < printVotes.length; i++) {
System.out.println(printNames[i] + "
" + printVotes[i] + "
" + printPrecent[i] + "%");
}
As you can see I have been manually adding the space between each element of the array but this means that the space between each element is different because the size of each element is different if work out a loop that works out an even amount of space between the elements and then print this along with the elements ....
So I'm trying to write a method which returns the number of vowel characters in arraylist. My idea is to convert the arraylist element by element to array each time iterating through the array counting the vowels of that element. When I started I immediately got an error(surprise, surprise). Excuse me if the problem is too simple, but I am very new to programming.
At line 9 I get the following error "Type mismatch: cannot convert from String to int". I want to get the element at this position, not to convert to int..
ublic class One {
public static void main(String[] args) {
ArrayList<String> bla = new ArrayList<String>();
bla.add("aaa");
bla.add("brr");
bla.add("unn");
}
public static ArrayList<String> averageVowels (ArrayList<String> list){
String[] arrListWord = list.toArray(new String[list.get(0)]);
return list;
}
}
So I have an array which holds 19 elements, each element represents a value of 'income'. I'm trying to code the graph so that each bar will represent the value of each element of the array (income). I have been given the code ' for (int Bar = 0; Bar < array of values.length; bar++);' however i'm unsure if this is how to do it, or what to add to this code to make it work.
View Replies View RelatedSo I just finished up my term project and have everything working but I wanted to make one slight adjustment to the code and Im not exactly sure what I'm doing wrong - it involves retrieving a set element from an array from a different class so to some what show what I have going on:
public class example1 {
private example2 Examp;
public example1() {
Examp = new example2();
} public void getArray() {
if(Var >= 10 && Var <= 20) {
[Code] ....
I have an if statement that looks at a sum of numbers, and predetermined upon the set of numbers I want it to output a message by calling the index number in the array and returning the string. I currently just have the message in the if statements but would be nicer to just pull them from a different class to keep it consolidated.
While shuffling an array, if I use Collections.shuffle(), there is a chance that an element in a particular index in the input array can be present in the same index in the output array. Is there an existing method that handles that too? If not, how can I best handle it? After shuffling, will swapping every element with the last element work?
View Replies View RelatedThis code is not best way to find the duplicate elements in a given array. Any alternative method for an optimized code.
Java Code:
import java.util.Arrays;
public class Find_Dupliicate_ArrayElement {
public static void main(String[] args) {
int[] Array1 = {1, 9,8,1,2,8,9,7,10, -1, 1, 2, 3, 10, 8, -1};
// Store the array length
int size = Array1.length;
//Sort the array
Arrays.sort(Array1);
[code]....
How do you extract first int digit from an int array element (java)?
if a[3] = 45, how do I extract 4 out of 45?
I'm trying to iterate through an array of integers and find the start position of the part of the array containing the most consecutive 1s.
For example given the array {1,3,1,1,1,1,5,3,2,1,1}, the method should return 2 and given {1,4,5,1,1,1,5,1} the method should return 3.
So far, I've managed to retrieve the element where the consecutive 1s begin. However, I'm unsure how to get the index of this element and this implementation doesn't work if there is more than one set of consecutive 1s.
public class GetIndex {
public static int getPosition(int[] myArray) {
int index = 0;
int tracker = 0;
int mostOnes = 0;
for(int i = 0; i < myArray.length; i++) {
[Code] .....
the problem I'm having is I want to use a mutator method to set data for an array element. The code I have so far is:
public void addProduct(String productName)
//Goes through and sets the name of a product and assigns it to the array
{
int index;
for (index = 0; index < product.length(); index++)
{
product[index].setName(productName);
numberOfProducts++;
}
}
The array was initialised like this:
Product[] product = new Product[3];
And the setName(String) method is just your typical mutator method.However, in Eclipse, I have an error messages. It is:
"-The method setName(String[]) is undefined for the type String" .....
So in this program, which is a grading program, I am trying to compare all the students averages to find who has the highest one and list the grades and the student's names from least to greatest. Yes, I see there are other problems in the program but it is nowhere near finished.
import java.util.Scanner;
public class Main {
public static void main(String[] args) {
String[] studentName = new String[20];
int[] studentAverage = new int[20];
Scanner input = new Scanner(System.in);
[code]....
I'm having a bit of trouble outputting the difference between two array list
import java.io.BufferedReader;
import java.io.File;
import java.io.FileReader;
import java.io.PrintWriter;
import java.util.ArrayList;
public static void main(String[] args) throws Exception {
[Code] ....
This prints out something like
Test1
Test1
Test2
Test2
Test2
Test3
Test3
Test3
Test4
Test4
Test5
Test5
Test6
Test6
Test6
Ideally, it's suppose to print out only Test2, Test3, Test6.. I've tried different combinations of loops and equals() but I never get the correct output.
import java.io.IOException;
public class Largestcolumn
{
public static void main ( String[] args ) throws IOException
{
int largest = 0;
int newnumber = 0;
int[][] data = { {3, 2, 5},
[Code] ....
When I run this code, I get this following output: The largest element in column 0 is: 9.
Exception in thread "main" java.lang.ArrayIndexOutOfBoundsException: 4
at largestcolumn.Largestcolumn.main(Largestcolumn.java:27)
Java Result: 1
It outputs the first column's maximum element but then throws an out of bounds error. I'm new to Java and I can't figure out how to fix my code so that it will work for this multidimensional array and output the maximum elements in all of the columns.
I need comparing two array lists. For this program i am comparing 2 array lists. The list is integers entered by the user the second is random generated numbers. So far in my program i am able to compare the 2 arrays together and output if they are equal or not however i need the program to output even if atleast one if the integers match,
EXAMPLE list one: 1, 2 ,3 ,4, 5. LIST TWO: 1, 3, 3, 3, 3.
Since the first number matches i want it to out put there is one match, so on and so forth with if there are 3 or 4 matching integers. here is my code so far.
public static void main(String[] args)
{
final int NbrsEntered = 5; //Number of guessed numbers entered
final int LOTTOnbr = 5;
int[] numbers = new int[NbrsEntered];
int[] randomNum = new int[LOTTOnbr];
//int[] TestArrayOne = { 1, 2, 3, 4, 5 };
//int[] TestArrayTwo = { 1, 2, 3, 3, 5 };
boolean arraysEqual = true;
int index = 0;
[Code] ....
I have written following code.
I want to print all elements in Array to output here is my code
int[][] arr={{12,12,13},
{14,1223,14}};
for(int i=0;i<arr.length;i++)
{
for(int j=0;j<arr.length;j++)
{
System.out.println(arr[i][j]);
}
}
but I am getting following output
12
12
14
1223
how to print all elements of int array?