Check if the Sentence Is Pangram.java

class Solution {
    public boolean checkIfPangram(String sentence) {

        Set<Character> alphabetSet = new HashSet<>();
        
        // Add all characters from 'a' to 'z' in hashset
        for (int i = 'a'; i <= 'z'; i++) {
            alphabetSet.add((char) i);
        }
        // Remove every character and check
        // if set becomes empty at any point of time
        for (int i = 0; i < sentence.length(); i++) {
            alphabetSet.remove(sentence.charAt(i));
            if (alphabetSet.isEmpty())
                return true;
        }
    return false;
  }
}