//User function template for JAVA

class Solution

{

    //Function to check if a string is Pangram or not.

    public static boolean checkPangram  (String s) {

         boolean[] present = new boolean[26];

        // Convert the string to lowercase for case-insensitive comparison

        s = s.toLowerCase();

        // Iterate through the string and mark each letter as present

        for (int i = 0; i < s.length(); i++) {

            char currentChar = s.charAt(i);

            // Check if the character is a lowercase letter

            if (currentChar >= 'a' && currentChar <= 'z') {

                present[currentChar - 'a'] = true;

            }

        }

        // Check if all letters are present

        for (boolean letterPresent : present) {

            if (!letterPresent) {

                return false;

            }

        }

        return true;

        // your code here

    }

}