AnagramChecker.java

/**
* Given two strings s and t, return true if the two strings are anagrams of each other, otherwise return false.

* An anagram is a string that contains the exact same characters as another string, but the order of the characters can be different.

* Example 1:

* Input: s = "racecar", t = "carrace"

* Output: true
**/

class AnagramChecker 
{
 public boolean isAnagram(String s, String t) 
 {
 int nS = s.length();
 int tS = t.length();
 int[] counts = new int[26];

 if(nS != tS)
 {
 return false;
 }

 for(int i = 0; i < nS; i++)
 {
 counts[s.charAt(i) - 'a']++;
 counts[t.charAt(i) - 'a']--;
 }

 for(int j = 0; j < 26; j++)
 {
 if(counts[j] != 0)
 {
 return false;
 }
 }
 return true;
 }
}