checkPerfectSquare()

Step 1: Understanding the Problem

First, let's understand what a perfect square is. A perfect square is a number that can be expressed as the product of an integer to itself. For example, the numbers 4, 9, 16, 25 are perfect squares because they are respectively the squares of the numbers 2, 3, 4, 5. Now, given a number, we want to check if it's a perfect square. In other words, we need to see if there's an integer that when multiplied by itself gives the number.

 public class Main {
    public static void main(String[] args) {
        // Our number to check
        int number = 16;
    }
}

Step 2: Initial function form

Let's define our function checkPerfectSquare that takes in an integer and returns a boolean value; true if the number is a perfect square, false otherwise.

public static boolean checkPerfectSquare(int number) {
    // To be implemented
}

Step 3: Implementing the Logic

A simple way to determine if a number is a perfect square is to find its square root and see if it's an integer. The Math.sqrt function returns the square root of a number and the Math.round function returns the closest integer. If the square of this integer equals the original number, then the number is a perfect square.

public static boolean checkPerfectSquare(int number) {
    // Finding the square root of the number
    double sqrt = Math.sqrt(number);
    // Checking if square of nearest integer is same as number
    return Math.round(sqrt) * Math.round(sqrt) == number;
}

Step 4: Calling the function in main method

Now, let's call our function with the number we want to check in the main method. It will check if the given number is a perfect square or not and print the result on the console.

public static void main(String[] args) {
    // Our number to check
    int number = 16;
    // Call the function and print the result
    System.out.println(checkPerfectSquare(number));
}

Conclusion

This function works efficiently in checking whether a number is a perfect square. Here is the complete code implementation:

public class Main {

    public static void main(String[] args) {
        // Our number to check
        int number = 16;
        // Call the function and print the result
        System.out.println(checkPerfectSquare(number));
    }

    public static boolean checkPerfectSquare(int number) {
        // Finding the square root of the number
        double sqrt = Math.sqrt(number);
        // Checking if square of nearest integer is same as number
        return Math.round(sqrt) * Math.round(sqrt) == number;
    }
}