Max Chunks To Make Sorted | 3 Detailed Approaches | Leetcode 769 | codestorywithMIK
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This is the 131st Video of our Playlist "Arrays 1D/2D Search : Popular Interview Problems" by codestorywithMIK
In this video we will try to solve a very good Array problem : Max Chunks To Make Sorted | 3 Detailed Approaches | Leetcode 769 | codestorywithMIK
This problem is specially detailed for beginners and hence it's a little lengthy. Hope this video helps to build the thought process.
I have also shared one different approach which is not present in Leetcode Editorial.
I will explain the intuition so easily that you will never forget and start seeing this as cakewalk EASYYY.
We will do live coding after explanation and see if we are able to pass all the test cases.
Also, please note that my Github solution link below contains both C++ as well as JAVA code.
Problem Name : Max Chunks To Make Sorted | 3 Detailed Approaches | Leetcode 769 | codestorywithMIK
Company Tags : Amazon, wayfair
My solutions on Github(C++ & JAVA) - https://github.com/MAZHARMIK/Interview_DS_Algo/blob/master/Arrays/Cumulative_Sum(Prefix Array)/Max Chunks To Make Sorted.cpp
Leetcode Link : https://leetcode.com/problems/max-chunks-to-make-sorted
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Summary :
Approach 1: Using Prefix Maximum and Suffix Minimum
Compute the prefix maximum and suffix minimum arrays to track the maximum and minimum values up to and from each index, respectively.
Identify chunk boundaries where the suffix minimum of the next part is greater than the prefix maximum of the current part.
Approach 2: Using Cumulative Sum
Maintain two cumulative sums: one for the array values and another for the indices.
Identify chunk boundaries where the cumulative sum of array values equals the cumulative sum of indices.
Approach 3: Using Maximum Check
Track the maximum value encountered so far while iterating through the array.
Identify chunk boundaries where the maximum value equals the current index, indicating that all elements up to that point are in their correct positions.
✨ Timelines✨
00:00 - Introduction
Motivation
Problem Explanation
Approach-1 Thought Process
Coding Approach-1
Approach-2 Thought Process
Coding Approach-2
Approach-3 Thought Process
Coding Approach-3
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