10 Java Coding Challenges for Beginners

If any student is aspiring to start their career as a front-end developer, computer scientist, or full-stack developer, Java should be an essential part of their curriculum. Java is an easy-to-learn and basic form of coding that forms the base of many advanced coding languages. However, most universities take a theoretical approach while teaching Java courses. This leaves the students with inadequate knowledge of Java and looking for programming assignment help desperately. Many websites and online courses offer a good foundation to test your basic Java skills through practical exercises. These courses can be tough and challenging. However, students can always hire Java programming assignment help experts to get the solutions if they are stuck. It is better to clear your doubts at the beginning instead of stumbling upon a problem during your assessment. On that note, here are 10 Java coding challenges that any beginner can try with the help of assignment experts –

1. Word Reversal

In this challenge, the coders need to input a string of words. But the code should make the output come out reversed while maintaining the same order. For example, if the input sentence is “Cat attacks man”, the output must show “man attacks cat”. This is a very basic exercise and is ideal for people who are starting Java recently.

Once you are done with this challenge, you can transition to similar challenges with more complexity. For example, maintain the same sentence reversal code but add punctuation and capitalisation. For example, try writing “She is the best!” as “Best the is she!”

• Find the Word

In this challenge, the coders need to input a chain of words and find the second last word from the string. For example, in the input “I love to watch sunsets and feel the breeze”, the code should be able to find the word “the”.

If you have mastered this technique, just like the previous exercise, you can make it even more challenging. Instead of finding words, you can rewrite the code to find the second numerical output (n). That implies that the code can find the nth word from the string of words. So, if your chosen string of words is, “I can program anything in Java”, and n=6, then the output will show the sixth word, i.e. “Java”.

• Word Search

For the third exercise, you can explore a little deeper into the Java concepts. For example, the coders can try to return a Boolean logic from a string of words. So, the output should show “true” or “false” by analysing the string that starts with an input word. For example, if the input string is “hello world” and the input word is “hello”, then the Boolean logic must classify it as true.

If you want to try more advanced courses on the same concept, then you can write a program that shows the number of times a word appears in the input sentence. For example, if the input string is, “After the party, my friends were passed out, and I also passed out after some time.” and the input word is “passed, ” the code must show a return of the value of 2.

• Anagrams

Anagrams are a phenomenon when you can make two words using the same set of alphabets. Here are some anagram examples –

• “silent” and “listen”
• “binary” and “brainy”
• Pairs” and “Paris”

Coders can write two strings as input codes so that the output must show “true” in Boolean logic if both the strings are anagrams. To build up on this challenge, write codes to get separate lists that group anagrams together from an array of strings. For example, if the input is, {“rat”, “tar”, “steam”, “meats”}, the output should be like, {[“tar,” “rat”], [“steam,” “meats”]}.

• Pangrams

Pangram is a sentence that has all 26 letters of the English alphabet. We are familiar with the popular sentence, “The quick brown fox jumps over the lazy dog.”. Using Java codes, the coders can make a pangram checker from an input string. If the algorithm can find a pangram, it returns a Boolean true or false if it doesn’t.

To add up to this challenge, coders can try to develop a perfect pangram checker. A perfect pangram is where each English alphabet appears only once. Students can seek help from online coding experts to find out examples of perfect pangrams.

• Number Reversal

Just like you have written a program for word reversal, you can create one for reversing numbers in the output. For example, if you input the number 6593, the return should be 3956. In fact, any coding enthusiast can try this exercise since this is a favourite question among most technical interview panels.

To make it more challenging, coders can try to reverse decimal numbers. So, if the input is 193.56, after reversal, the output will be 653.91, while the decimal doesn’t shift places.

• Armstrong Numbers

Armstrong numbers are whole numbers that equal the sum of the raised digits to the power of the total number of digits. For example, 153 is an Armstrong number. This is because there are three digits in 153 – 1, 5 and 3. Also, 13+53+33 equals 153. Similarly, 8208 is also an example of an Armstrong number. Here 84+24+04+84 equals 8208.

Coders can take a cue from this and develop a code that will show true if there is an Armstrong number in the string. You can make it more challenging by creating a calculator that will return all Armstrong numbers present in between 0 and the input number.

• Product Maximiser

This Java program asks students to create a code where one needs to find the two results in the largest product from an array of numbers. This output must include these two numbers and the other numbers in the array.

As an extra challenge, coders can seek help from Java experts and create codes to find the largest numbers from two arrays.

• Prime Number Checker

With this Java exercise, any coder can learn how to create a tool that can single out prime numbers from a sequence of numbers. To create more advanced tools, coders can try to make a calculator that will return TRUE if it can find any prime number between 2 and a specified set.

1. Prime Factorisation

Prime factors of a number are all the integers less than that number and are divisible by that number as well as 1. Some of the examples of prime factors of 12 are 1,2,3,4,6 and 12. Using the fundamentals of Java, beginners can try to form a calculator that can pick out any prime factors between two numbers. To advance to the next stage, create a tool exercising 9 to create a prime factorisation calculator for any number.

Summing Up:

Java is not the most advanced tool for making software. Yet, it is immensely popular because of its versatility. Java always offers coders multiple ways to solve a challenge. So, attempting the Java coding challenges certainly makes your fundamentals strong. Online Java assignments and programming helpers are a great medium to get assistance if they are stuck with these exercises. So, book one today and become a master in Java coding.

Author Bio:

Raheem Ali is a leading writer in computer programming and has worked for MyAssignmenthelp.com for the last three years.

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