## How to count the number of objects of a class in java

Suppose you want to know how many objects of a class have been created during a program execution. How would you do that? Using constructor When an object of a…

Suppose you want to know how many objects of a class have been created during a program execution. How would you do that? Using constructor When an object of a…

Reversing a string means arranging the characters of a string in reverse order, that is, placing last character as first, second last character as second and so on. Example of…

Generation of random sequence of characters is often required when you want to display a unique transaction id or as a random password generator which provides a temporary password for…

What is Kaprekar Number? A number whose square when divided into 2 parts and each part is added, the result is equal to the number itself is called Kaprekar number.…

Sum of array elements means the sum of all the elements(or digits) in the array. Array elements can be integers(int) or decimal numbers(float or double). To know about java arrays…

What is a perfect number? A positive integer whose sum of all factors(including 1 and excluding the number) is equal to the number itself is a perfect number. Factors of…

What are factors of a number? Factors of a number are integers that completely divide the number. Complete division means that the remainder of division is zero. Factors of a…

Algorithm 1. Get all characters of the string. 2. Iterate over the characters one by one. 3. In each iteration, check the position of character. 4. If its position is…

Determining the number of words in a file is an important aspect of programming. It is required while solving programming problems and it is also utilized in real world applications.…