LeetCode 1832: Check if the Sentence Is Pangram | DSA Series Day 6

Welcome back to Day 6 of my Data Structures and Algorithms (DSA) series! Today, we are working with strings and hash sets to solve LeetCode 1832 - Check if the Sentence Is Pangram.

A pangram is a sentence that contains every single letter of the English alphabet at least once. In this video, I explain how to efficiently check for this using a Hash Set (or a boolean array of size 26) to keep track of the unique characters we've seen. We will walk through the logic step-by-step and write a clean, highly optimized C++ solution that runs in O(n) time and O(1) auxiliary space!

Code Repository & Solutions:
Get the full C++ source code for this problem and all my series solutions on my GitHub:
https://github.com/SaptakBhattacharyya/leetcode-soln-by-saptak.git

Connect with Me:
Track my progress and connect with me on LeetCode:
https://leetcode.com/u/SaptakBhattacharyyaCodez/

Timestamps:
0:00 - Intro & Day 6 Welcome
0:35 - Understanding the Problem (What is a Pangram?)
1:50 - The Hash Set & Frequency Array Approach Explained
4:00 - Writing the C++ Code
6:15 - Time & Space Complexity Analysis (O(n) Time, O(1) Space)
7:45 - Outro & What's Next for Day 7

Tags:
#DSA #LeetCode #LeetCode1832 #Pangram #StringManipulation #HashSets #DataStructures #Algorithms #CompetitiveProgramming #CodingInterview #SoftwareEngineering #C++

Видео LeetCode 1832: Check if the Sentence Is Pangram | DSA Series Day 6 канала Saptak