Java Coding Challenges
Java coding challenges - find palindrome number, sort 1 million integers in Big O(1) time, check number is prime, anagram buckets, reverse a string, check Armstrong number, check factorial of a number, pangram sentence.
Prime number checker in Java
Upasana | November 20, 2022 | 3 min read | 629 views | Java Coding Challenges
In this article we will learn if a given number is prime or not. The solution presented here may not be best optimized, but it should be sufficient from interview point of view.
Read ArticleGiven a collection of 1 million integers, all ranging between 1 to 9, sort them in Big O(n) time
Upasana | November 22, 2020 | 2 min read | 669 views | Java Coding Challenges
This is a typical Integer Sorting problem with a constraint that the number range to sort is very limited in spite 1 million total entries. Integer Sorting with limited range is achieved efficiently with Bucket Sorting.
Read ArticleReverse a string using recursion in Java
Upasana | November 21, 2020 | 1 min read | 105 views | Java Coding Challenges
In this article, we will write a program to reverse character positions in a given string using recursive approach.
Read ArticleReverse position of words in a string using recursion
Upasana | November 20, 2020 | | 83 views | Java Coding Challenges
In this article, we will write a program to reverse position of words in a given string using recursive approach.
Read ArticleJava Program to find Factorial of a number
Upasana | October 17, 2020 | 2 min read | 382 views | Java Coding Challenges
Discussion on different approaches to calculate factorial of a given number - recursion, iterative approach and Java 8 stream approach
Read ArticlePangram checker in java
Upasana | September 12, 2020 | 2 min read | 3,206 views | Java Coding Challenges
A pangram is a sentence containing every letter in the English Alphabet (a-z). Pangram example: The quick brown fox jumps over the lazy dog
Read ArticleAnagrams string checker in Java
Upasana | July 24, 2020 | 2 min read | 1,334 views | Java Coding Challenges
Two strings are called anagrams if they contain same set of characters but in different order. Here we will evaluate anagrams using a Java Program
Read ArticleArmstrong Number in Java
Upasana | July 24, 2020 | 2 min read | 794 views | Java Coding Challenges
In an Armstrong number (also known as _narcissistic number_), is a number that is the sum of its own digits each raised to the power of the number of digits
Read ArticlePalindrome checker in Java
Upasana | July 24, 2020 | 2 min read | 1,394 views | Java Coding Challenges
A palindrome is a word, number, or other sequence of characters which reads the same backward as forward, such as madam, racecar or 454.
Read ArticleCheck if the given string is palindrome
Upasana | September 09, 2019 | 2 min read | 575 views | Java Coding Challenges
In this article we will write java code to check if the given input string is palindrome or not.
Read ArticlePopular Tags
Trending Posts
- Machine Learning based Multiple choice questions
- Difference between getOne and findById in Spring Data JPA?
- Rest Assured API Testing Interview Questions
- python problem 1: find the runner-up score
- Run method on Spring Boot startup
- Feign exception handling in Spring Cloud
- Disable SSL validation in Spring RestTemplate
- Citibank Java developer interview questions
- MD5 and SHA256 in Java Kotlin and Android
- Sapient Global Market Java Interview Questions and Coding Exercise