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.

Check if the given string is palindrome

Carvia Tech | September 09, 2019 | 2 min read | 1 views | Java Coding Challenges

In this article we will write java code to check if the given input string is palindrome or not.

Read Article

How to check if the given number is palindrome in Java

Carvia Tech | September 09, 2019 | 2 min read | 82 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 Article

How to reverse a number in Java

Carvia Tech | September 07, 2019 | 1 min read | 92 views | Java Coding Challenges

This is a common SDET interview questions where interviewer asks for reversing a number using any language.

Read Article

Given a collection of 1 million integers, All ranging between 1 to 9, how would you sort them in Big O(n) time

Carvia Tech | August 03, 2019 | 2 min read | 243 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 Article

Find two numbers of which the product is maximum in an array

Carvia Tech | May 27, 2019 | 1 min read | 38 views | Java Coding Challenges

We can easily find two number in an array whose product is maximum by sorting the input integer array in descending order first and then multiplying the first two numbers.

Read Article

Check a number is Prime: Java Coding Problem

Carvia Tech | May 24, 2019 | 3 min read | 56 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 Article

Create anagram buckets from a given input array of words

Carvia Tech | May 18, 2019 | 2 min read | 48 views | Java Coding Challenges

Here we get an input array of words that contains anagram string, and we need to create buckets for all the anagrams words.

Read Article

Java program to check if two strings are anagrams

Carvia Tech | May 18, 2019 | 2 min read | 62 views | Java Coding Challenges

Two strings are called anagrams if they contain same set of characters but in different order. In this coding problem, we will evaluate anagrams using a Java Program.

Read Article

Write a program to reverse a string using recursion in Java

Carvia Tech | May 18, 2019 | 1 min read | 62 views | Java Coding Challenges

In this article, we will write a program to reverse a string entered by a user.

Read Article

Check if the given number is Armstrong Number in Java

Carvia Tech | May 18, 2019 | 2 min read | 56 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 Article

This website uses cookies to ensure you get the best experience on our website. more info