w3resource

Java: Check if two given strings are anagrams or not

Java Basic: Exercise-142 with Solution

Write a Java program to check if two strings are anagrams or not.

According to wikipedia "An anagram is a word or phrase formed by rearranging the letters of a different word or phrase, typically using all the original letters exactly once. For example, the word anagram can be rearranged into nag a ram, or the word binary into brainy."

Pictorial Presentation:

Java Basic Exercises: Check if two given strings are anagrams or not.

Sample Solution:

Java Code:

import java.util.*
public  class Solution {
    /**
     * @param s: The first string
     * @param b: The second string
     * @return true or false
     */
   public static boolean anagram_test(String str1, String str2) {
        // Check if either input string is null
        if (str1 == null || str2 == null) {
            return false;
        } 
        // Check if the lengths of the two strings are different
        else if (str1.length() != str2.length()) {
            return false;
        } 
        // Check if both strings are empty (an edge case)
        else if (str1.length() == 0 && str2.length() == 0) {
            return true;
        }
        
        // Create an integer array to count character occurrences
        int[] count = new int[256];
        
        // Count character occurrences in both strings
        for (int i = 0; i < str1.length(); i++) {
            count[str1.charAt(i)]++;
            count[str2.charAt(i)]--;
        }
        
        // Check if all counts in the array are zero, indicating anagrams
        for (int num : count) {
            if (num != 0) {
                return false;
            }
        }
        
        // If all checks pass, the strings are anagrams
        return true;
    }
    
    public static void main(String[] args) {
        // Test case: Check if the strings "wxyz" and "zyxw" are anagrams
        String str1 = "wxyz";
        String str2 = "zyxw";
        
        // Print the original strings
        System.out.println("String-1 : " + str1);
        System.out.println("String-2 : " + str2);
        
        // Check if the two given strings are anagrams and print the result
        System.out.println("Check if two given strings are anagrams or not?: " + anagram_test(str1, str2));
    }   
}

Sample Output:

String-1 : wxyz
String-2 : zyxw
Check if two given strings are anagrams or not?: true

Flowchart:

Flowchart: Java exercises: Check if two given strings are anagrams or not.

Java Code Editor:

Company:  Uber Yelp Amazon

Previous: Write a Java program to check if a given string has all unique characters.
Next: Write a Java program to merge two given sorted lists.

What is the difficulty level of this exercise?

Test your Programming skills with w3resource's quiz.



Become a Patron!

Follow us on Facebook and Twitter for latest update.

It will be nice if you may share this link in any developer community or anywhere else, from where other developers may find this content. Thanks.

https://www.w3resource.com/java-exercises/basic/java-basic-exercise-142.php