Character with Longest Consecutive Repetition in Java
The challenge
For a given string s find the character c (or C) with longest consecutive repetition and return:
Object[]{c, l};
where l (or L) is the …
Java
342 articles about java development, tools, and best practices
Cryptanalysis Word Patterns in Java
The challenge
In cryptanalysis, words patterns can be a useful tool in cracking simple ciphers.
A word pattern is a description of the patterns of …
Read Article →Backspaces in String Challenge using Java
The challenge
Assume "#" is like a backspace in string. This means that string "a#bc#d" actually is "bd"
Your task is to …
Read Article →The SongDecoder Dubstep Challenge with Java
The challenge
Polycarpus works as a DJ in the best Berland nightclub, and he often uses dubstep music in his performance. Recently, he has decided to …
Read Article →Break camelCase Challenge in Java
The challenge
Complete the solution so that the function will break up camel casing, using a space between words.
Example …
Read Article →The “Split Strings” Challenge using Java
The challenge
Complete the solution so that it splits the string into pairs of two characters. If the string contains an odd number of characters then …
Read Article →Solving the “Double Cola” Challenge using Java
The challenge
Sheldon, Leonard, Penny, Rajesh and Howard are in the queue for a “Double Cola” drink vending machine; there are no other …
Read Article →Convert Seconds to Human Readable Time (HH:MM:SS) using Java
The challenge
Write a function, which takes a non-negative integer (seconds) as input and returns the time in a human-readable format (HH:MM:SS)
HH= …
Solving the “Mexican Wave” Challenge using Java
The challenge
Task
Your task is to create a function that turns a string into a Mexican Wave. You will be passed a string and you must return that …
Read Article →Convert String to Camel Case using Java
The challenge
Complete the method/function so that it converts dash/underscore delimited words into camel casing. The first word within the output …
Read Article →Sort a Java Integer in Descending Order
The challenge
Your task is to make a function that can take any non-negative integer as an argument and return it with its digits in descending order. …
Read Article →Get the Sum of Digits / Digital Root using Java
The challenge
Digital root is the recursive sum of all the digits in a number.
Given n, take the sum of the digits of n. If that value has more than …