Find the K-th Character in String Game I | Two Approaches | Leetcode 3304 | codestorywithMIK

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Hi Everyone, this is the 98th video of our Playlist "Leetcode Easy".
Now we will be solving an easy but a good observation Problem on array - Find the K-th Character in String Game I | Two Approaches | Leetcode 3304 | codestorywithMIK

I will explain it in full detail so that it becomes easy to understand. We will find the reason behind everything so that we understand why we did what we did.
And we will do a complete dry run.

Problem Name : Find the K-th Character in String Game I | Two Approaches | Leetcode 3304 | codestorywithMIK
Company Tags : will update later
Code Github(C++ & JAVA) : https://github.com/MAZHARMIK/Interview_DS_Algo/blob/master/strings/Easy%20Tagged/Find%20the%20K-th%20Character%20in%20String%20Game%20I.cpp
Leetcode Link : https://leetcode.com/problems/find-the-k-th-character-in-string-game-i/description/
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Video Summary :
1. String Building Approach
This method constructs the sequence starting with 'a' and repeatedly appends the next alphabet characters for each existing character until reaching a length of k. It has a linear time and space complexity, as it explicitly builds the string up to the required index.

2. Bit Count (Popcount) Approach
This method leverages the property that the k-th character in the sequence can be deduced by simply counting the number of 1s in the binary representation of k-1 and adding that count to 'a'. This results in a constant time and space solution without constructing the sequence.

✨ Timelines✨
00:00 - Introduction
0:17 - Motivation
0:32 - Problem Explanation
2:46 - Approach 1 (Simulation)
7:39 - Approach 2 (Better Approach log(k))
17:03 - Coding it up

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