Python XOR (^) Explained: Find Unique Numbers, Swap Variables & More
🧠 *XOR in Python: The ^ Operator Explained with 5 Powerful Applications | NeuralAICodeCraft*
XOR (Exclusive OR) is the most magical bitwise operator. It can find unique numbers, swap variables without a temp variable, and even encrypt data!
In this video, you'll master the XOR (^) operator from basics to advanced applications.
📌 *What you'll learn:*
*XOR BASICS*
▸ What is XOR? (Exclusive OR explained)
▸ Truth table (0⊕0=0, 0⊕1=1, 1⊕0=1, 1⊕1=0)
▸ XOR with integers (binary representation)
▸ Visual explanation of how XOR works
*PROPERTIES OF XOR*
▸ Commutative: A ⊕ B = B ⊕ A
▸ Associative: (A ⊕ B) ⊕ C = A ⊕ (B ⊕ C)
▸ Identity: A ⊕ 0 = A
▸ Self-inverse: A ⊕ A = 0
▸ These properties make XOR powerful!
*5 POWERFUL APPLICATIONS*
*1. Find Unique Number in Array*
Find the number that appears only once when all others appear twice.
*2. Swap Two Variables (Without Temp)*
Swap values without using a third variable.
*3. Find Missing Number*
Find the missing number in a sequence from 1 to n.
*4. Simple XOR Cipher (Encryption)*
Encrypt and decrypt text with a secret key.
*5. Parity Check (Even/Odd 1s)*
Check if the number of 1 bits is even or odd.
📌 *Timestamps:*
0:00 - What is XOR?
1:30 - XOR Truth Table Explained
3:00 - XOR with Integers (Binary)
5:30 - Properties of XOR (Commutative, Associative)
8:00 - Application 1: Find Unique Number
10:30 - Application 2: Swap Variables
12:30 - Application 3: Find Missing Number
14:30 - Application 4: Simple XOR Cipher
17:00 - Application 5: Parity Check
19:00 - XOR vs Other Bitwise Operators
20:00 - Summary & Practice Problems
💻 *Code from this video:* [GitHub link: https://github.com/SaurabhPandey69/Yo...]
🎯 *Practice Challenge:*
1. Find the two unique numbers in an array where all others appear twice
2. Implement a simple XOR encryption for messages
3. Check if a number is a power of 2 using XOR
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