Program to Swap Two Numbers Without Using a Third Variable in Java | Logic Building|KniteCoderz
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In this video, we’ll write a Java program to swap two numbers without using a third variable.
This is a fundamental logic-building exercise that strengthens your understanding of arithmetic operations, variable manipulation, and control of program flow.
We’ll use the addition and subtraction method to interchange the values of two variables — no extra variable needed!
What You’ll Learn:
Swapping numbers using arithmetic logic
Using Scanner for user input
How variable values change step by step
Writing clean and efficient Java code
Concept Insight:
This technique works by storing both values in one variable temporarily using arithmetic operations.
It’s a great way to learn how values are stored and manipulated in memory.
Why It’s Important:
Swapping logic without a third variable improves problem-solving ability and logical reasoning, and it’s a favorite question in technical interviews.
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