Find Subsequence of Length K With the Largest Sum | 2 Approaches | Leetcode 2099 | codestorywithMIK

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Hi Everyone, this is the 5th video of our Playlist "Sorting : Popular Interview Problems".
Now we will be solving an easy Problem on array - Find Subsequence of Length K With the Largest Sum | 2 Approaches | Leetcode 2099 | 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.
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Problem Name : Find Subsequence of Length K With the Largest Sum | 2 Approaches | Leetcode 2099 | codestorywithMIK
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Code Github(C++ & JAVA) : https://github.com/MAZHARMIK/Interview_DS_Algo/blob/master/Arrays/Leetcode%20Easy/Find%20Subsequence%20of%20Length%20K%20With%20the%20Largest%20Sum.cpp
Leetcode Link : https://leetcode.com/problems/find-subsequence-of-length-k-with-the-largest-sum
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Video Summary :
Approach 1 (Sorting with Indices):
The idea is to pair each element with its original index, sort the array by value to find the top k largest elements, then sort those k elements by their original indices to preserve the original order in the result.

Approach 2 (Partial Sort with Threshold):
The intuition is to find the k-th largest value (threshold) using partial sorting, then iterate through the original array and pick elements greater than or equal to the threshold, while maintaining the input order and limiting to k elements.
✨ Timelines ✨
00:00 Introduction
00:14 Motivation
00:40 Problem Explanation
02:23 Thought Process – Approach-1 O(nlogn)
11:53 Approach-2 Intuition Average O(n)
27:05 Corner Case
34:30 Coding Approach-1
37:33 Coding Approach-2
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