I am trying to sort a Collection. I cant seem to get my code to work with what I have found online. Collection: [104.131119, 104.188937, 93.174548, 100.533096, 97.902247, 98.608619, 93.380054, 106….
Tag: arrays
How to fill an array with elements from another array of different size? (leaving non existent indexes as zero)
SCENARIO 1: if main array length is < 8 Declaration: int[] mainArray = new int[] { 1, 2, 3, 4, 5 } // no minimum number of elements int[] arrayOne = new int[] { 0, 0, 0, 0, 0, 0, 0, 0 }; // must …
Program ignoring the last row in the file in calculation
I have a text file with data that looks like this (TestData.txt): My code parses the file and does some calculations with it. However, in the method arrangeList() within which calls another method called getTestAvg() (calculates column means), the program ignores Tyler Perez’s scores. I noticed that the…
Java sort string array using Array.sort() like python’s sorted with key=lambda x:
I’m occasionally learning Java. As a person from python background, I’d like to know whether there exists something like sorted(iterable, key=function) of python in java. For exmaple, in python I can …
I cannot use java array.remove() on int[]
I am new to Java, and I am in a class where for the homework, I need to remove duplicate elements in an array, but I have come across an obstacle in my code: This is my code so far: Everything I have checked either does not relate to my code or proves that there shouldn’t be an error in
How to sort two arrays with one being sorted based on the sorting of the other?
So I have encountered this problem a lot of times. Let me explain. Say I have these two arrays: A1={1,2,3,4,5,6,7,8,9,10}; and A2={1,2,3,0,2,1,1,0,0,0};. What I require is this: When I sort A2, whatever swapping and shifting of elements takes place in A2, the same should take place in A1 as well. Basically I …
How can I insert an array into a specific array element using Jolt
Question/problem How can I use Jolt to insert an array into a specific object in an array? input The objects have a common set of attributes, but support optional attributes. Specific objects need to get these optional attributes depending on their specific position in the array, i.e. second ([1]). These opti…
How to Parse Json containing Array of Arrays Java
I have a Json which contains array of Arrays, now I need to parse that Json and count the elements, and after reaching certain limit I need to put it into result Json. I was able to parse till one level and count the elements. How can I parse multiple levels and get the object in same format: here is
a method that converts a daynumber into a date
A number between 1 and 365 is requested from the user. The number represents the day number of the year. The corresponding date is displayed. I get stuck on the method calculationDateWithDayNumber An …
How to swap rows and columns of a 2d array? [duplicate]
This question already has answers here: Multi-dimensional array transposing (12 answers) Closed 1 year ago. I’m trying to write a method for ‘transpose’ a two-dimensional array of integers, in which the rows and columns of the original matrix are exchanged. However, I have no idea how I can …