Bitwise XOR of All Pairings | 2 Simple Approaches | Dry Runs | Leetcode 2425 | codestorywithMIK
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Hi Everyone, this is the 26th video of our Playlist "Bit Manipulation : Popular Interview Problems".
We will solve a very good and interesting problem to practice bit Manipulation concepts - Bitwise XOR of All Pairings | 2 Simple Approaches | Dry Runs | Leetcode 2425 | codestorywithMIK
I believe this problem can be asked in a Phone Call Interview.
We will deep dive in minute details. The explanation will be detailed so that even beginners can understand it well.
Problem Name : Bitwise XOR of All Pairings | 2 Simple Approaches | Dry Runs | Leetcode 2425 | codestorywithMIK
Company Tags : will update later
Github Solutions Link (C++/Java) : https://github.com/MAZHARMIK/Interview_DS_Algo/blob/master/Bit_Magic/Bitwise XOR of All Pairings.cpp
Leetcode Link : https://leetcode.com/problems/bitwise-xor-of-all-pairings
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Video Summary :
Approach 1: Frequency Count and XOR Property
This approach calculates the frequency of each number's contribution to the XOR result based on the lengths of nums1 and nums2. It uses a hash map to track frequencies and XORs numbers with an odd frequency.
Approach 2: Direct XOR Property
This approach directly uses the XOR property, focusing on the parity of the lengths of nums1 and nums2. It XORs all elements of the other array when one array's length is odd, avoiding additional space usage.
✨ Timelines✨
00:00 - Introduction
0:23 - Motivation
0:57 - Problem Explanation
4:00 - Brute Force
4:51 - Approach-1 Thought Process
11:30 - Coding Approach-1 in Cpp
13:42 - Coding Approach-1 in JAVA
15:35 - Approach-2 Thought Process
22:01 - Coding Approach-2 in Cpp
23:17 - Coding Approach-2 in JAVA
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