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Infosys Senior Software Engineer Interview Question

I interviewed in San Jose, CA and was asked:
"switch value of variables a and b, without using 3rd variable."
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Part of a Senior Software Engineer Interview Review - one of 1,938 Infosys Interview Reviews

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int var1=100, var2=200;
System.out.println("Before Swapping "+var1+", "+var2);
var1 = var1 + var2;
var2 = var1 - var2;
var1 = var1 - var2;
System.out.println("After Swapping "+var1+", "+var2);

- Kitu on Apr 13, 2012

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