Longest Palindrome by Concatenating Two Letter Words | Simple Way | Leetcode 2131 | codestorywithMIK
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Hi Everyone, this is the 20th video of our Playlist "Hashmap/Set : Popular Interview Problems".
Now we will be solving a good Hashmap problem - Longest Palindrome by Concatenating Two Letter Words | Simple Thought Process | Leetcode 2131 | codestorywithMIK
I will explain in such a way that it will become super easy. From scratch and complete thought process.
Problem Name : Longest Palindrome by Concatenating Two Letter Words | Simple Thought Process | Leetcode 2131 | codestorywithMIK
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My solutions on Github(C++ & JAVA) - https://github.com/MAZHARMIK/Interview_DS_Algo/blob/master/HashMap/Longest Palindrome by Concatenating Two Letter Words.cpp
Leetcode Link : https://leetcode.com/problems/longest-palindrome-by-concatenating-two-letter-words
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Video Summary :
The approach uses a hash map to track the frequency of words and their reversed counterparts. For each word, if its reverse is already in the map, a pair is formed contributing 4 characters to the palindrome. Otherwise, the word is added to the map. After processing all words, a single word with identical characters (like "aa") can be placed in the center, adding 2 more characters if available.
✨ Timelines✨
00:00 - Introduction
0:18 - Motivation
1:20 - Problem Explanation
2:30 - Thought Process
8:27 - Dry Run
8:02 - Data Structure/Topic Reveal
14:08 - Coding it up
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