I have an ArrayList<List<String>> and im trying to use the built-in binary search in the collection but I always come up with an error int index = Collections.binarySearch(arraylistdata, id); Where arraylistdata is my ArrayList of List<String>. Answer This works fine, but you need to known t…
Tag: java
Using a FOR-EACH loop, how would you keep count of the number of scores over 85?
There is another test case not shown here with about 6 different test scores. How do I use a FOR-EACh loop to keep count of the number of scores over 85? Answer I would write something like this: And here is the unit test: class BetterLoopTest { }
How to merge two sorted array?
Question is ==> You are given two integer arrays nums1 and nums2, sorted in non-decreasing order, and two integers m and n, representing the number of elements in nums1 and nums2 respectively. Merge nums1 and nums2 into a single array sorted in non-decreasing order. The final sorted array should not be ret…
Changing return value of a function in Java
I have a function like the following one: As you can see this function shows the an error message when the input parameter transmission does not receive the expected values. Furthermore, it returns 0. I want to use this function in another function as follows: However, when I run the code I can see the messag…
what’s the growth order of “find a peak” algorithm
hello i need to apply an algorithm similar to this but the problem is that i need the complexity to be O(logn). the complexity of the code below is said to be O(logn) but from what i understand a recursive method has the growth order of O(n). so the question is what is the growth order of the code below.
Spring Boot Mapstruct not woking mapping
My Dto model My main model My mapstruct class Hi everyone my project using mapstruct but my dto class user_id not mapping user please help me Thanks Answer This should solve the problem: Because you’re wanting to map user_id from CoverLetterDto to the User class in CoverLetter, you have to use dot notat…
how do i get the content of a chat message in minecraft?
I am coding a forge minecraft 1.12.2 mod and I need to know how do I get the contents of a chat message that someone sends in chat. I am using the ServerChatEvent event to sence messages but I do not know how to get the actual content of the message itself. Answer To get the message you can use
Finding the duplicate values and the number of occurrences of the same in Java Map
I am using Java. I have a Map as shown below : I am inserting Map objects with some key value pairs into the above List<Map<String, String>> listMap. Now, I want to iterate and then find if there are any duplicate/same values for the key jobDescription in any of the map, then check for the value o…
data type and calculate average in java
I am working on a java code that calculates the average of grades in an array for N of students and it is working fine when I enter grades like {3,4,3} but when I use numbers with decimals like {3.7,2.5,3.2} it starts giving me errors and I want to make a class of data type Students for example. Any help
what is the “JVMTI_ERROR_NONE”? [closed]
Closed. This question needs debugging details. It is not currently accepting answers. Edit the question to include desired behavior, a specific problem or error, and the shortest code necessary to reproduce the problem. This will help others answer the question. Closed 1 year ago. This post was edited and sub…