static boolean isAnagram(String a, String b) {
    String s1=a.toLowerCase();
    String s2=b.toLowerCase();

    int [] countofs1= new int[26];
    int [] countofs2= new int[26];
    for(char c:s1.toCharArray()){
        countofs1[c-'a']++;
    }


    for(char c:s2.toCharArray()){
        countofs2[c-'a']++;
    }


    for(int i=0;i<26;i++){
        if(countofs1[i] != countofs2[i]){

            return false;
        }
    }

    return true;

}