I’m working on a school assignment and the assignment was to make a heap sorting (In Place) program. Now the program works perfectly fine for arrays with under +- 20 elements, above that it occasionally messes up, however I can’t seem to find what’s wrong. The skeleton for the methods was al…
Tag: sorting
Java sorting is not the same with MySQL sorting
I need to check the sorting in the table and table content is given by MySQL. I’m trying the following: Collections.sort(sorted, String.CASE_INSENSITIVE_ORDER); And get the following result: tes3@test.com test4@test.com test5@test.com test@test.com test_user@mail.com user-og@driver.com And this is what …
How to sort Integer digits in ascending order without Strings or Arrays?
I’m trying to sort the digits of an integer of any length in ascending order without using Strings, arrays or recursion. Example: I have already figured out how to get each digit of the integer with modulus division: but I don’t know how to order the digits without an array. Don’t worry abou…
Fastest way to sort an array of objects in java
I have a Class called apple which contains 3 values as int x, int y and int weight. Then i created an array of apple type objects. Now i want to sort the the array of objects based on weight meaning the the apple object with the lowest weight should be first and so on. I know there are quite
How to sort dates of type string in java
I am building a android project where am storing some details which includes date as string,but now I need to sort the list view by date.I am bit confused on how to do it.I am done with everything but need to sort the list by date. Here is the overview of how am storing data. I have an arraylist of
How to sort data in a CSV file using a particular field in Java?
I want to read a CSV file in Java and sort it using a particular column. My CSV file looks like this: Considering I want to sort it using the third column, my output should look like: After some research on what data structure to use to hold the data of CSV, people here suggested to use Map data structure
Java swing repainting while computing: animating sorting algorithm
http://www.youtube.com/watch?v=M0cNsmjK33E I want to develop something similar to the link above using Java Swing. I have the sorting method and did while repaint but when I triggered the sorting, instead of showing the bars slowly sorting itself, it freezes and then unfreezes when the array has been fully so…
Disable Column Header sorting on a JTable
Is it possible to disable manual sorting on a JTable after adding a sorter? So I have a JTable that has the following sorter attached to it (basically sorts by column 3 when the table is initialised): This works fine, however the user is still able to click on the column headers in the table and sort by any o…
How to sort an array of objects in Java?
My array does not contain any string. But its contains object references. Every object reference returns name, id, author and publisher by toString method. Now I need to sort that array of objects by the name. I know how to sort, but I do not know how to extract the name from the objects and sort them. Answer…
How to sort file names in ascending order?
I have a set of files in a folder, and all of them starting with a similar name, except one. Here is an example: I am able to list all the files from the specified folder, but the list is not in an ascending order of the spectrum number. Example: I get the following result when the program is executed: