I need to write a program. This method will take integer array as input and return array where each value is swapped with its neighbour element. In case the array has odd count, then last element is not swapped. Result: I tried using nested for loops but didnt get it Answer Where is the code you tried so far ?!
Tag: arrays
How to return all array permutations iteratively into a two-dimensional array?
I am trying to write a program that will iterate through all possible permutations of a String array, and return a two dimensional array with all the permutations. Specifically, I am trying to use a String array of length 4 to return a 2D array with 24 rows and 4 columns. I have only found ways to print the Strings
Cannot use setArray JDBC (integer) with H2 Database
I want to put an array of integers in my jdbc query with H2 database. But doest not work, I am getting this exception : org.h2.jdbc.JdbcSQLException: Data conversion error converting “(1,2,3)”; SQL statement: I am using H2 database. Can you help me please? Answer Using my JDBC utilities to work with JDBC IN array parameters easily: 1. If Maven, add
How to save the matrix in the text file
I just want to input the matrix in the text file, but the result are clearly different. I don’t have any ideas. I expect but in the file is Answer You can try this: This will print the values like a table:
How to scale basic drawings?
I would like to have a list of shapes, that appears in my window. Whenever I’m changing the size of the window, I would like to scale all of my drawings. I already prepared classes, that store information about random shapes in a list (rectangles, ovals, etc.). I have no problem with painting them all, but I can’t deal with
Is there a “right “way to store a String and an Integer in the same array in Java?
I think that store a String and an Integer in the same array in Java would be more efficient in some cases, but I know that Java is strongly typed. Is there a way to do that?, If there’s no, what can I do? Answer Defining “more efficient” usually means less storage space or less processor intensive. These are diametrically
ArrayIndexOutOfBoundsException: Index 3 out of bounds for length 3
I am getting an exception and i don´t understand why Console: Answer because array index start at 0
How to dynamically declare shape of an Array in Java?
I am working with an API where I need to provide a Object[], Object[][], Object[][][]… you get the idea. Assume setFoo requires an Object[], this is how I get it to work: And this is how I make Object[][] requirement work, so that I can call setBar.. The problem is, I am not able to figure out how to create
MongoDB how to count array elements with Java driver
I need my application to count the size of an array foos inside a document using Java driver 3.8. I know I can do this with the shell but I have no idea of how to do this with java, because the only method producing a $size operator I found is Filters.size(String fieldName, int size) that is meant to look
Count the minimum number of jumps required for a frog to get to the other side of a river
I work with a Codility problem provided below, The Fibonacci sequence is defined using the following recursive formula: A small frog wants to get to the other side of a river. The frog is initially located at one bank of the river (position −1) and wants to get to the other bank (position N). The frog can jump over any