LeetCode 1461 | Check If a String Contains All Binary Codes of Size K | Daily LeetCode | Day 54/365 скачать в хорошем качестве

LeetCode 1461 | Check If a String Contains All Binary Codes of Size K | Daily LeetCode | Day 54/365

😄 When binary codes start playing Pokémon — gotta catch ’em all! ⚡💻 LeetCode 1461 | Check If a String Contains All Binary Codes of Size K | Daily LeetCode | Day 54/365 | Sliding Window + Hashing | C++ Solution In today’s video, we solve LeetCode 1461: Check If a String Contains All Binary Codes of Size K, where we must verify whether every possible binary substring of length k exists inside a given string. 🧠 Core Idea: • Total required binary codes = (2^k) • Use a sliding window of size k • Store substrings (or encoded values) in a hash set • If unique count equals (2^k) → return true This converts an exponential concept into an efficient linear solution 🔥 📌 What you’ll learn in this video: • Sliding window technique for substrings • Using hashing to track unique patterns • Bitmask optimization idea • Early stopping optimization • Clean and interview-ready C++ implementation • Time & space complexity explanation ⏱ Time Complexity: O(n) 💾 Space Complexity: O(2^k) 💻 Problem Link: https://leetcode.com/problems/check-i... 🎯 Why this problem matters: This problem strengthens your understanding of sliding window + hashing patterns, a powerful combo frequently tested in coding interviews and contests. 👍 Like the video if sliding window problems are getting easier 💬 Comment if you want a dry run example 🔔 Subscribe for the 365 Days of LeetCode Challenge #LeetCode #DailyLeetCode #Day54of365 #SlidingWindow #Hashing #Strings #BitManipulation #CPlusPlus #DSA #InterviewPreparation