1832. Check if the Sentence Is Pangram.cpp

/*
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:
    bool checkIfPangram(string sentence) {
        const unordered_set<char> seen(begin(sentence), end(sentence));
        return size(seen) == 26;
    }
};