Java's int has a bit representation; Java's double type has a bit representation. Java has five additional primitive data types: A Java program is composed of statements, which define the computation by creating and manipulating variables, assigning data-type values to them, and controlling the flow of execution of such operations. Declarations create variables of a specified type and name them with identifiers.
Top 50 Java Programs from Coding Interviews Coding is an integral part of any programming job interviews Java development interviews are no exception. I would even suggest you should never hire anyone without testing their coding skillcoding is also an art and more often than a good code is a good developer as well.
If you look at tech giants like Amazon, Facebook, and Google they thoroughly test the coding skill of any developer they hire, particularly Amazon who first send online coding exercises to filter Java programmers who can code. This online test usually gives you requirements and ask you write a program in limited time usually 2 to 3 hours.
The program should meet the output given by the exercise itself.
These type of exercises are very tough to crack if you don't have a good coding skill. Btw, the most important question is how do you develop that kind of coding skill in the first place?
Well, things always start small and if you pay attention, there are many Java Job interviews where you would have been asked to write small programs.
They are simple but yet they give a good indication of coding skill of perspective candidates. They are usually preferred by many companies because it usually requires 10 to 20 minutes to write the solution and discuss them. In this list, I am going to share 50 of such small programs from Java Programming interviews.
These programs are from various Data Structure and Algorithm topics e. If you don't have a good knowledge of Data structure and algorithm, I suggest you to first read a good book on Data Structure and Algorithms e.
Introduction to Algorithms by Thomas H. If you find that book difficult, you can get more options in my post about algorithm books here.
As I said it includes questions from problem-solving, linked list, array, string, matrix, bitwise operators and other miscellaneous parts of programming. Once you gone through these questions, you can handle a good number of questions on real Job interviews. Fibonacci series solution Write a simple Java program which will print Fibonacci series e.
Be prepare for cross questions like using iteration over recursion and how to optimize the solution using caching and memoization. Prime number solution Write a Java program to check if a given number is prime or not. Remember, a prime number is a number which is not divisible by any other number e.
Be prepared for cross e. String Palindrome solution You need to write a simple Java program to check if a given String is palindrome or not.
A Palindrome is a String which is equal to the reverse of itself e. Though be prepared with both recursive and iterative solution of this problem. The interviewer may ask you to solve without using any library method e. Integer Palindrome solution This is generally asked as follow-up or alternative of the previous program.
This time you need to check if given Integer is palindrome or not. An integer is called palindrome if its equal to its reverse e. You can use divide by 10 to reduce the number and modulus 10 to get the last digit.
This trick is used to solve this problem. Armstrong number solution A number is called an Armstrong number if it is equal to the cube of its each digit. You need to write a program to check if given number is Armstrong number or not. Avoiding deadlock in Java solution This is one of the interesting programs from Java Interviews, mostly asked to 2 to 3 years of experienced programmers or higher.
Interviewer simply asked you to write code where a resource is accessed by multiple threads. You need to write code in such a way that no deadlock should occur. The trick to solving this problem is acquiring resources in an order and release them in reverse order e.
This way you can avoid deadlock.
Factorial solution This is one of the simplest programs you can expect on interviews. It is generally asked to see if you can code or not.I am new to java programming,please tell me what is wrong with this implementation of the Armstrong's Number Algorithm. It's printing "1" infinite times.
An Armstrong number of three digits is an integer such that the sum of the cubes of its digits is equal to the number itself. For example, is an Armstrong number since 3**3 + 7**3 + 1**3 = Armstrong number in Java.
Here we have written the code in four different ways standard, using for loop, recursion, while loop and also with different examples as like: between and , between 1 to and between 1 to with sample outputs and online execution tool embedded. Armstrong Numbers - Java Program An Armstrong number is the one that equals the sum of its digits raised to the power of the number of digits in that number which is to be checked.
To be more clear, let the number be n and the number of digits be x. Oct 26, · Learn about Armstrong Numbers and how to draw a flowchart to find out whether a given number is Armstrong or not. Learn the concept of finding a Armstrong Number . Jul 22, · A number is called an Armstrong number if it is equal to the cube of its each digit.
for example, is an Armstrong number because = 1+ +27 which is equal to 1^3+5^3+3^3. You need to write a program to check if given number is Armstrong number or not. Write a program r-bridal.com that generates a unifomly distributed cycle of length N using Sattolo's algorithm.
Wget. Write a program r-bridal.com that reads in data from the URL specified on the command line and saves it in a file with the same name.