How to Check if an Array has Squared Elements of Another Array in Java

In Java, it is a common task to check whether the elements of one array are squared values of the elements in another array. This operation can be accomplished by following a few steps. In this article, we will explore how to check if an array contains squared elements of another array using Java, along with some example code to demonstrate the process.

Let's dive into the step-by-step approach to solve this problem:

Step 1: Sort the Arrays To simplify the comparison process, we can start by sorting both arrays in ascending order. This ensures that we can compare the elements of the arrays in a consistent and systematic manner. Java provides a built-in method, Arrays.sort(), to sort arrays.

Step 2: Square the Elements Next, we need to square each element of the second array. We can achieve this by iterating over the second array and squaring each element using the Math.pow() method or simply by multiplying the element by itself.

Step 3: Compare the Arrays After sorting and squaring the elements, we can iterate over both arrays simultaneously and check if the corresponding elements match. If at any point we find a mismatch, it means that the elements of the second array are not squared values of the first array.

Step 4: Implementing the Solution Let's now see an example implementation of the above steps in Java:

java
import java.util.Arrays;

public class ArraySquaredElementsChecker {

    public static boolean checkSquaredElements(int[] array1, int[] array2) {
        if (array1.length != array2.length)
            return false;

        // Step 1: Sort the Arrays
        Arrays.sort(array1);
        Arrays.sort(array2);

        // Step 2: Square the Elements
        for (int i = 0; i < array2.length; i++) {
            array1[i] = array1[i] * array1[i]; // or Math.pow(array2[i], 2);
        }

        // Step 3: Compare the Arrays
        for (int i = 0; i < array1.length; i++) {
            if (array1[i] != array2[i])
                return false;
        }

        return true;
    }

    public static void main(String[] args) {
        int[] array1 = {2, 3, 5, 7};
        int[] array2 = {4, 9, 25, 49};
        
        boolean result = checkSquaredElements(array1, array2);
        System.out.println("Arrays have squared elements: " + result);
    }
}

In the main() method, we define two arrays, array1 and array2, with values [2, 3, 5, 7] and [4, 9, 25, 49] respectively. These arrays represent the elements and squared elements we want to compare. The checkSquaredElements() method takes these arrays as arguments and performs the necessary steps to check if array2 contains the squared elements of array1.

In this example, the result will be true since every element in array2 is a squared value of the corresponding element in array1.

By following this approach, you can easily check if an array contains squared elements of another array in Java. Remember to sort the arrays, square the elements, and compare them to achieve accurate results.