Divide Array Into Equal Pairs | 5 Approaches | Leetcode 2206 | codestorywithMIK
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Hi Everyone, this is the 74th video of our Playlist "Leetcode Easy : Popular Interview Problems".
Now we will be solving simple problem for practicing - Divide Array Into Equal Pairs | 5 Approaches | Leetcode 2206 | codestorywithMIK
Problem Name : Divide Array Into Equal Pairs | 5 Approaches | Leetcode 2206 | codestorywithMIK
Company Tags : will update later
My solutions on Github(C++ & JAVA) - https://github.com/MAZHARMIK/Interview_DS_Algo/blob/master/Arrays/Leetcode Easy/Divide Array Into Equal Pairs.cpp
Leetcode Link : https://leetcode.com/problems/divide-array-into-equal-pairs
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Video Summary :
Approach-1 (Using Map): Count occurrences of each number using a map and check if all counts are even.
Approach-2 (Using Set): Use a set to track unpaired numbers; remove when paired and check if empty.
Approach-3 (Using Boolean Array): Maintain a boolean array to track pair status and verify all are paired.
Approach-4 (Using Sorting and Comparing): Sort the array and check if every consecutive pair has equal values.
Approach-5 (Using Sorting and XOR): Sort the array and verify pairs using XOR to ensure equal values.
✨ Timelines✨
00:00 - Introduction
0:23 - Motivation
0:39 - Problem Explanation
1:39 - Approach-1
2:55 - Approach-2
4:28 - Approach-3
7:22 - Approach-4
8:55 - Approach-5
12:48 - Coding all of them
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