342 articles about java development, tools, and best practices
If you have come across this error when trying to build and deploy your Spring Boot Maven application then this post will help you!
Error: Failed to …
You’ve built a Java project and packaged a .jar file.
You are ready to run it outside your IDE, or deploy it somewhere.
When you run it using …
Read Article →Your task, is to create a NxN spiral with a given size.
For example, spiral with size 5 should look like this:
and with the size 10: …
Read Article →from Wikipedia:
The longest common subsequence (LCS) problem is the problem of finding the longest subsequence common to all sequences …
Given an array of integers nums sorted in ascending order, find the starting and ending position of a given target value.
If target is …
Given an integer n, return true if it is a power of three. Otherwise, return false.
An integer n is a power of three, if there exists an …
Give a string s, count the number of non-empty (contiguous) substrings that have the same number of 0’s and 1’s, and all the …
Complete the function that takes two integers (a, b, where a < b) and return an array of all integers between the input parameters, …
Given a grid of size m x n, calculate the total number of rectangles contained in this rectangle. All integer sizes and positions are …
Read Article →The vowel substrings in the word codewarriors are o,e,a,io. The longest of these has a length of 2. Given a lowercase string that has …
In this challenge, you will be given two strings a and b and your task will be to return the characters that are not common in the two …
In this simple exercise, you will create a program that will take two lists of integers, a and b. Each list will consist of 3 positive …