Two arrays are equal if they contain the same elements in the same order. In java, we can compare two Boolean Arrays in 2 ways:
- By using Java built-in method that is .equals() method.
- By using the Naive approach.
Examples:
Input : A = [true , true , false]
A1 = [true, true, false]
Output: Both the arrays are equal.
Input : A = [true, true, false]
A1 = [true, false, true]
Output: Both the arrays are not equal.
Method 1:
Array class in Java provides the method Arrays.equals() to check whether two arrays are equal or not.
Syntax:
public static boolean equals(boolean[] a, boolean[] a1)
Parameters:
a - one array to be tested for equality a1 - another array to be tested for equality
Returns: It returns true if both the arrays are equal else returns false.
Code:
Java
// Java Program to Compare two Boolean// Arrays using built-in function import java.util.Arrays; class GFG { public static void main(String[] args) { // initializing both the boolean arrays boolean[] a = new boolean[] { true, true, false }; boolean[] a1 = new boolean[] { true, true, false }; // Displaying Array1 System.out.println("Array1..."); for (int i = 0; i < a.length; i++) { System.out.println(a[i]); } // Displaying Array2 System.out.println("Array2..."); for (int j = 0; j < a1.length; j++) { System.out.println(a1[j]); } // comparing array1 and array2 boolean result = Arrays.equals(a, a1); if (result) { System.out.println("Both the arrays equal "); } else { System.out.println( "Both the arrays not equal "); } }} |
Output
Array1... true true false Array2... true true false Both the arrays equal
Method 2:
- In this, we will use the Naive approach to compare two arrays.
- We can run a for loop and check every element of the array and compare each one of them.
Java
// Java Program to Compare two Boolean// Arrays using Naive approach import java.io.*; class GFG { public static void main(String[] args) { // initializing both the boolean arrays boolean[] a = new boolean[] { true, true, false }; boolean[] a1 = new boolean[] { true, true, false }; // Displaying Array1 System.out.println("Array1..."); for (int i = 0; i < a.length; i++) { System.out.println(a[i]); } // Displaying Array2 System.out.println("Array2..."); for (int j = 0; j < a1.length; j++) { System.out.println(a1[j]); } // Comparing both the arrays for (int i = 0; i < a.length; i++) { // if any element is found different we will // print our ans and exit the program. if (a[i] != a1[i]) { System.out.println( "Both the arrays equal "); System.exit(0); } } System.out.println("Both the arrays equal "); }} |
Output
Array1... true true false Array2... true true false Both the arrays equal
