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A pangram is a sentence where every letter of the English alphabet appears at least once.

Given a string sentence containing only lowercase English letters, return true if sentence is a pangram, or false otherwise.

 

Example 1:

Input: sentence = "thequickbrownfoxjumpsoverthelazydog"
Output: true
Explanation: sentence contains at least one of every letter of the English alphabet.

Example 2:

Input: sentence = "leetcode"
Output: false

 

Constraints:

  • 1 <= sentence.length <= 1000
  • sentence consists of lowercase English letters.

class Solution { public boolean checkIfPangram(String sentence) { } }