Some programmers can also use it to disable certain portions of code during development. Said differently, comments provide information about the code without changing the code's functionality. Think of them as markers that guide the reader. Not only does it help me keep track of the code as it grows more complicated, but it also makes the code more understandable for anyone that needs to reference the code at a later date.Ĭomments in Java are the statements in the Java code that are not executed when the program is run. This is why I specifically make sure to make comments as I write code. Without Java comments, it's easy to get lost. ![]() Most of the time, when you write code, you will need to go back and make changes later. Good programmers tend to comment as they go while writing the code. Tt is a guide that helps in better understanding the functionality of a program. ProgrammingLanguages.Commenting is an integral part of any programming language. Remove all the elements that satisfy the given predicate ("After removeAll(scriptingLanguages): " programmingLanguages) ProgrammingLanguages.removeAll(scriptingLanguages) List scriptingLanguages = new ArrayList() Remove all the elements that exist in a given collection ("After remove(\"Kotlin\"): " programmingLanguages) (The remove() method returns false if the element does not exist in the ArrayList)īoolean isRemoved = programmingLanguages.remove("Kotlin") Remove the first occurrence of the given element from the ArrayList ("After remove(5): " programmingLanguages) ("Initial List: " programmingLanguages) * A utility function to print array of size n */įor (int i=0 i programmingLanguages = new ArrayList() Recursively heapify the affected sub-tree If right child is larger than largest so far Int largest = i // Initialize largest as root ![]() One by one extract an element from heap Let’s write the program and understand its working. Then repeat the same process for the remaining element. It is similar to selection sort where we first find the maximum element and place the maximum element at the end. Heap sort is a comparison based sorting technique based on Binary Heap data structure. Write a Java program to implement HeapSort Algorithm. On executing the above program, it will locate the element present at the particular index Element found at index 4 2. Int result = ob.binarySearch(arr, 0, n - 1, x) We reach here when element is not present it can only be present in left subarray Int binarySearch(int arr, int l, int r, int x) Returns index of x if it is present in arr[l. Java implementation of recursive Binary Search Let’s now see how to implement a binary search algorithm. Binary search compares the target value to the middle element of the array. It is a search algorithm that finds the position of a target value within a sorted array. Write a Java Program to check whether the given array is Mirror Inverse or not. The output of the above program will be as shown below: WelcomeĮmocleW oT akerudE 8. while loop to calculate fibonacci series upto n numbers Let’s write a Java program to calculate the Fibonacci series. It is a series in which the next term is the sum of the preceding two terms. ![]() Write a Java program to calculate Fibonacci Series up to n numbers. On executing the above program, you will get factorial of a number as shown below: Enter the number:įactorial of entered number is: 47900160 3. ![]() ("Factorial of entered number is: " factorial) Scanner scanner = new Scanner(System.in) Scanner object for capturing the user input Now, let’s write a program and find factorial of a number using recursion. The factorial of a number n is denoted by n! Write a Java program to calculate a Factorial of a number.įactorial of a number is the product of all the positive numbers less than or equal to the number. When you execute the above program, the output looks like as shown below: Enter two numbers: 20 98Ģ0.0 / 98.0 = 0.2 2. operator doesn't match any case constant ( , -, *, /) nextDouble() reads the next double from the keyboard Let’s implement the basic calculator operations with the help of the below program. When you think about a calculator, operations like addition, subtraction, multiplication, and division comes into the mind. Write a Java program to perform basic Calculator operations. Let’s get started ! What are the basic Java programs?ġ. This Edureka Java Full Course will help you in understanding the various fundamentals of Java Programming and also helps you to became a master in Advanced Java concepts.īelow is the list of programs that I will be covering in this article.
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