The final map would have all the values from Map A as a key and the values from Map B as values in the Final Map. Is there a way to do this using Java?
How to go through each link item in both lists, and directly link them into the new list in order without using insert()
class Link { public long dData; // data item public Link next; // next link in list // ------------------------------------------------------------- public Link(long dd) // constructor { dData = dd; } // ------------------------------------------------------------- public void displayLink() // display this link { System.out.print(dData + " "); } } // end class Link
The code is meant to input 2 arrays (they must be sorted even if this is not verified ) and then merge them in such a way that a sorted merged array is created at the end.I need to avoid a simple concatenation and then sorting the resulting array operation.I m interested in what i m doing wrong .
The input i used was :
Enter list1: 5 1 5 16 61 111 Enter list2: 4 2 4 5 6 import java.util.*; public class C7_31 { public static void main(String[] args){ Scanner input = new Scanner(System.in);
I have a program that has a fair amount of data and the user can add to or edit the data. I would like to somehow combine the data with the program so they are all just one file. Like everything is in xxx.jar. When the program ends the data should be appended or in some other way become part of the program.Then wherever xxx.jar goes, the latest version of the data goes with it.I am doing it with a separate data file now but it is a problem keeping the data file with the program file.
I'm developing a java swing application in which i need to show the map of some area and allow user to put markers on it. I've goggled a lot on the topic but unfortunately i haven't got any how i can do it.
I came across some ideas like displaying a web browser in swing just like JXBrowser (i can't afford JXBrowser). And I'm also not sure if this way will allow me adding markers.
At this point I know how to utilize Google Maps within Android but it always seems to take up the full window, there is an image below which shows what I'm attempting to accomplish (having a box below the Google maps where I can store text i.e. "Hello World"
How do I add box below Google Maps, so to store text i.e. "Hello World"
Code so far:
ActivityMain:
Java Code:
public class MainActivity extends Activity { private GoogleMap googleMap; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main);
So I am supposed to be changing infix notation to postfix notation using stacks. This is simply taking a string "3 + 5 * 6" (infix) and turning it into (3 5 6 * +" (postfix).
To do this, we are to scan the string from left to right and when we encounter a number, we just add it to the final string, but when we encounter an operand, we throw it on the stack. Then if the next operand has a higher input precedence than the stack precedence of the operator on the top of the stack, we add that operator to the stack too, otherwise we pop from the stack THEN add the new operator.
I am supposed to be utilizing a hash map but I don't see how you would go about doing this. We are supposed to store operators on the hash map but operators need their own character, input precedence, stack precedence, and rank. How do you use a hash map when you need to tie a character to 3 values instead of just 1? I just don't get it.
The following is our Operator class that we are to use. Another problem is this isn't really supposed to be modified, yet we were given two important variables (inputPrecedence and outputPrecedence) that we can't have nothing to be initialized to and no way of accessing? So that might be where a hash map comes in but I am not sure. I am not very sure on how they exactly work anyway...
public class Operator implements Comparable<Operator> { public char operator; // operator privateint inputPrecedence; // input precedence of operator in the range [0, 5] privateint stackPrecedence; // stack precedence of operator in the range [-1, 3]
[Code] ....
So my question mostly revolves around how I tie an Operator character to its required values, so I can use it in my code to test two operators precedence values.
My original thought was turn string into character array, but then I would need nested for/while loops to check if it is a number or letter, or if it is an operator and thus result in O(n^2) time
I have an assignment and one of the prompts is to do a binary search on an array if and only if the array of Strings is sorted. The binary search part I think I have completed, but it is the sorted array check that is throwing everything off. If the array is already sorted, return true; else, return false.
// Check if the array is sorted public static boolean isSorted(String[] arr) { //for (int i = 0; i < arr.length-1; i++) //{ //if (arr[i].compareTo(arr[i+1]) > 0) //return false; //} String[] arrSorted = arr; Arrays.sort(arrSorted);
I am trying to make a code that takes a list and puts the list in sorted order (least to greatest).
public class SortedIntList { static final int capacity = 10; private int [] data; private boolean unique; private int size; public SortedIntList(){ size =0; data = new int [10];
[Code] ....
Here what the code produces.
Testing SortedIntList() error when adding these values to list: 4 6 4 list should = [4, 4, 6] actual list = [4, 6, 4] was working properly prior to adding last value of 4
How do u copy all the elements in an array eg A into another array eg B? This is the question:
An array A contains integers that first increase in value and then decrease in value,
For example, 17 24 31 39 44 49 36 29 20 18 13
It is unknown at which point the numbers start to decrease. Write efficient code to code to copy the numbers in A to another array B so that B is sorted in ascending order. Your code must take advantage of the way the numbers are arranged in A.
This is my program:
This is the error message:
Exception in thread "main" java.lang.ArrayIndexOutOfBoundsException at java.lang.System.arraycopy(Native Method) at Quest30.CopyAndSortArray.main(CopyAndSortArray.jav a:16)
Write a program that promts a professor to input grades for five different courses for 10 students. Prompt the professor to enter only A,B,C,D, or F for grades(A is the highest grade, F fail). use variables for student number(1 through 10) and grade numbers(1 through 5). create a menu for Search. if the user select search it will prompt a letter correspond to grade. display all student with selected grade. if the user just enter nothing, display all student with their grade sorted from highest to lowest.
My problem is that I can't even run the program, because it gives me
Exception in thread "main" java.lang.ArrayIndexOutOfBoundsException: 13 at domashno.ten.longestSortedSequence(ten.java:37) at domashno.ten.main(ten.java:17)
Code :
public static void main(String[] args) { int[] arr = {3, 8, 10, 1,9, 14, -3, 0, 14, 207, 56, 98, 12}; longestSortedSequence(arr); System.out.println(longestSortedSequence(arr)); } public static int longestSortedSequence(int[] arr) {
So I have two related tables - Country (Master) Projects (Detail). Country has a OneToMany relationship with Projects. I put a link on my AllProjects.xhtml page. When tyhe link is clicked it uses a data model class to to display the current (clicked) project record (projectRecord object). After editing all the details, the UPDATE button calls a merge method in the DAO class. On the first attempt to update, nothing happens and the record is returned as it is with no errors. If I try updating again, I get:
Is the 'new' keyword in the entity class causing the Inser statement in the DAO because the JPA thinks I want to create a new object therefore invokes INSERT instead of UPDATE?
Which of these is not a real differentiator for programming languages:
a) Object-oriented / Process-Oriented b) Interactive / Automated c) Interpreted / Compiled d) Strongly-Typed / Weakly-Typed e) All of the above f) B and C g) B and D
Almost all support OOP, Interactive/Automated, Interpreted/Compiled but not sure about Strongly typed/Weakly typed.
I have two ArrayLists and I want to compare them for common elements, and based on the result I want to update the first Arraylist to only have these elements. sort of like the opposite of RemoveAll() which removes elements in common and keep the ones that are unique. so far I thought of using for loop and .contains() in case it was fault,element not present, remove from list. but I was wondering in what other ways, perhaps APIs i can use to do that?
I need to create an algorithm that finds the common element(s) in all arrays that has a signature of public Comparable[] findCommonElements(Object[] collection) that has an efficiency of at most O(knlogn), uses a query array, and accepts as input a collection of arrays. I am aware my time would be better spent learning how to use array lists and hash sets, but I am supposed to use concepts already covered, and these have not been.
I feel like this code should work, but it is returning null for the array of common elements. Which means it obviously is not working correctly. I am also likely going to need implementing the sort algorithm, but I wanted to get the part of finding the common elements set first.
public class CommonElements2<T extends Comparable<T>> { Comparable[] tempArr; Comparable[] common; Comparable[] queryArray; /* sort algorithm goes here */ public Comparable[] findCommonElements(Object[] collections)
I have developed a web portal using jsp and struts 2. I have approximately 10 JSP pages which looks exactly the same and have two text areas and two hidden fields. All 10 pages are exactly the same except for hidden field value. Can't i have a single common jsp page. How can i achieve it. A sample page i am attaching...
