How to check if Two Vectors have Same Items (Regardless of Order) in Java - Step by Step Examples

How to check if Two Vectors have Same Items (Regardless of Order) in Java ?

Answer

To check if two vectors have the same items regardless of order in Java using java.util.Vector, you can sort both vectors and then compare them.


✐ Examples

1 Check Equality of Numeric Vectors (Regardless of Order)

In this example,

  1. We create two Vector objects named vector1 and vector2.
  2. We sort both vectors using the sort() method from the Collections class.
  3. We compare the sorted vectors using the equals method to check if they are equal.
  4. The equals method returns true if the vectors have the same items regardless of order, otherwise false.

Java Program

import java.util.Vector;
import java.util.Collections;

public class Main {
    public static void main(String[] args) {
        Vector<Integer> vector1 = new Vector<Integer>();
        vector1.add(3);
        vector1.add(1);
        vector1.add(2);
        Vector<Integer> vector2 = new Vector<Integer>();
        vector2.add(1);
        vector2.add(2);
        vector2.add(3);
        Collections.sort(vector1);
        Collections.sort(vector2);
        boolean areEqual = vector1.equals(vector2);
        System.out.println(areEqual);
    }
}

Output

true

2 Check Equality of Character Vectors (Regardless of Order)

In this example,

  1. We create two Vector objects named vector1 and vector2.
  2. We sort both vectors using the sort() method from the Collections class.
  3. We compare the sorted vectors using the equals method to check if they are equal.
  4. The equals method returns true if the vectors have the same items regardless of order, otherwise false.

Java Program

import java.util.Vector;
import java.util.Collections;

public class Main {
    public static void main(String[] args) {
        Vector<Character> vector1 = new Vector<Character>();
        vector1.add('b');
        vector1.add('c');
        vector1.add('a');
        Vector<Character> vector2 = new Vector<Character>();
        vector2.add('a');
        vector2.add('b');
        vector2.add('c');
        Collections.sort(vector1);
        Collections.sort(vector2);
        boolean areEqual = vector1.equals(vector2);
        System.out.println(areEqual);
    }
}

Output

true

Summary

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


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  39. How to check if Two Vectors have Same Items (Regardless of Order) in Java ?
  40. How to Convert a Vector of Integers to a Vector of Strings in Java ?
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