LeetCode 1832. Check if the Sentence Is Pangram

Question

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.

 

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Solution

Python

class Solution:
    def checkIfPangram(self, sentence: str) -> bool:
        all_character = [0] * 26
        for i in sentence:
            all_character[ord(i)- ord('a')] += 1
        for j in all_character:
            if j == 0:
                return False
        return True

Java