1832\. Check if the Sentence Is Pangram

Easy

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.