I need to do a query on mongoDB due to I am developing in Java with Spring Boot and MongoDB. I know that this command is for arrays: This query let me to find if all fields of the arraylist “skillsOfCV” are in the arraylist called “skills” However, I am trying to pass an arraylist as “skillsOfCV” to compare all
Tag: arrays
How can I collect two-dimensional Array into a Map<String, Set>?
I have an array of arrays of two strings. How can I collect the above array into a Map<String, Set<String>> whose key is the first element of each array and the value is a set of second elements of the array? So that I get following map? So far, I found I can classify the first element of each array
Hexadecimal byte array from a Midi event to int
I’m trying to retrieve the tempo of a midi file through the javax.midi library. What I am expected to receive is an array of three ex, because the Set Tempo meta message (which is this case, has just 3 bytes specifying a miliseconds amount. This is how the midi event returns So if you join them you have 0x07A120 which
Finding elements in array using for loop
I am trying to add Scanner inputs into an array and I am trying to search for the element in an array using a for loop. The for loop looped through all the elements and print out “Not here” when names[i] is not equal to the Scanner input. How do I fix this issue ? Answer
Creating a Java increasing alphabet grid with a 5×5 array
The grid I need to recreate looks like this The grid I have now looks like this My code for creating the grid I have already declared these variables in the public class, not my main method. How would I achieve this? I tried changing the int’s in the middle section of my map to char like my top and
Check if array is sorted using recursion
I am getting true as answer even for unsorted(isNonDescending) arrays. Where is the bug? I want to break the array into smaller problem from the start of the array only. //Check for isNonDescending. Answer Instead of passing the size of the array as a parameter, which makes no sense anyway, because you can simply call arr.length, you should pass a
How to check if a traversion has reached a certain Index in a 2D-Array in Java?
Let’s say we have a 2D-boolean Array as a presentation of a maze, the size of the Array is not fixed and random. The walls are depicted as true: The exit of the maze is at a fixed Index. How can I check wether the traversion has reached this certain index or not? My idea was to create an int[
How to split a readLine but dont split values inside apostrophes?
Example txt file Code Is there a way I can have the split not split items within the apostrophes when going across the line? That way regardless if the first Item is one word or two words, if I call inputWords[1] It will always return the full string. What happens: “Multi Bit Ratcheting” -> inputWords[1] -> ‘Multi What I want:
How to cast a String as an Array then dedupe Array in Java? [closed]
Closed. This question needs details or clarity. It is not currently accepting answers. Want to improve this question? Add details and clarify the problem by editing this post. Closed 8 months ago. This post was edited and submitted for review 8 months ago and failed to reopen the post: Original close reason(s) were not resolved Improve this question The core
Serialize Object/Object[] entries to gson JsonObject
I am reading a resource from a backend that is giving me an Map of entries. I am iterating these and retriving the values. The type of that value is object or object[], the actual types are common primitives or a Calender class. My target is to create a json response, it should look like this: But I am really