🐍Python Program #8: Swap Two Numbers Without Using a Third Variable | Python Programming
🐍Python Program #8: Swap Two Numbers Without Using a Third Variable | Python Programming
#python #pythonprogramming #pythonforbeginners #swap #swapping #pythontutorial #python3
This Python trick shows how to swap two variables without using a third one! Great for interviews and logical thinking.
1. You have two numbers: a = 5, b = 10.
2. Normally, to swap, we need a temporary variable.
But here, we’ll do it using math (no third variable!).
3. Step-by-step:
a = a + b → Now a = 15
b = a - b → Now b = 5 (original value of a)
a = a - b → Now a = 10 (original value of b)
4. This way, the values are swapped without any extra variable.
5. Print new values of a and b.
Try it yourself with any number!
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code:
a = 5
b = 10
a = a + b
b = a - b
a = a - b
print("After swapping:")
print("a =", a)
print("b =", b)
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