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:

Sample Solution:

Java Code:

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) {
        if (str1 == null || str2 == null) {
            return false;
        } else if (str1.length() != str2.length()) {
            return false;
        } else if (str1.length() == 0 && str2.length() == 0) {
            return true;
        }
        int[] count = new int[256];
        for (int i = 0; i < str1.length(); i++) {
            count[str1.charAt(i)]++;
            count[str2.charAt(i)]--;
        }
        for (int num : count) {
            if (num != 0) {
                return false;
            }
        }
        return true;
    }
    public static void main(String[] args) {
		String str1 = "wxyz";
		String str2 = "zyxw";
		System.out.println("String-1 : "+str1);
		System.out.println("String-2 : "+str2);
		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:

Java Code Editor:

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