Question

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^ operator in java

I was assuming that c ^ d is a calculation like ‘the power of’, so c = 5, d = 2, result is 25. I think I’m wrong, though.

Can you explain what (c ^ d) does in java, for example in

result = result + (char)(c ^ d)

Answer 1

^ is the bitwise xor meaning that 0b0101^0b0010 (5^2) is 0b0111 and 0b0101^0b0111 is 0b0010

look at the truth table of xor (the result is 1 if the input are different

a b | a^b
---------
0 0 | 0
0 1 | 1
1 0 | 1
1 1 | 0

the bitwise operators take each bit of the terms and apply the operator to each bit