How to check if Two Arrays have Same Elements (Regardless of Order) in Java

How to check if Two Arrays have Same Elements (Regardless of Order) in Java ?

Answer

To check if two arrays have the same elements regardless of order in Java, you can sort both arrays and then compare them using the Arrays.equals() method.

✐ Examples

1 Arrays with Same Elements (Order Ignored)

In this example,

We create two arrays named arr1 and arr2 with the same elements but in different order.
We sort both arrays using the Arrays.sort() method.
We then check if the sorted arrays are equal using the Arrays.equals() method and store the result in the variable equal1.
Finally, we print the value of equal1 to the console.

Java Program

// Java example to check equality of arrays regardless of order
import java.util.Arrays;

public class Main {
    public static void main(String[] args) {
        int[] arr1 = {1, 2, 3};
        int[] arr2 = {3, 1, 2};
        Arrays.sort(arr1);
        Arrays.sort(arr2);
        boolean equal1 = Arrays.equals(arr1, arr2);
        System.out.println("Arrays are equal regardless of order: " + equal1);
    }
}

Output

Arrays are equal regardless of order: true

2 Arrays with Different Elements (Order Ignored)

In this example,

We create two arrays named arr3 and arr4 with different elements.
We sort both arrays using the Arrays.sort() method.
We then check if the sorted arrays are equal using the Arrays.equals() method and store the result in the variable equal2.
Finally, we print the value of equal2 to the console.

Java Program

// Java example to check equality of arrays regardless of order
import java.util.Arrays;

public class Main {
    public static void main(String[] args) {
        int[] arr3 = {1, 2, 3};
        int[] arr4 = {4, 5, 6};
        Arrays.sort(arr3);
        Arrays.sort(arr4);
        boolean equal2 = Arrays.equals(arr3, arr4);
        System.out.println("Arrays are equal regardless of order: " + equal2);
    }
}

Output

Arrays are equal regardless of order: false

Summary

In this tutorial, we learned How to check if Two Arrays have Same Elements (Regardless of Order) in Java language with well detailed examples.

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How to check if Two Arrays have Same Elements (Regardless of Order) in Java

How to check if Two Arrays have Same Elements (Regardless of Order) in Java ?

Answer

✐ Examples

1 Arrays with Same Elements (Order Ignored)

Java Program

Output

2 Arrays with Different Elements (Order Ignored)

Java Program

Output

Summary

More Java Arrays Tutorials