What does result = result + (char)(c ^ d) do?

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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)

^ is a bitwise XOR. http://stackoverflow.com/questions/460542/operator-in-java — , Jan 25 '12 at 20:33

score 3 · Answer 1 · answered Jan 25 '12 at 20:33

3

The ^ operator performs a Bitwise Exclusive OR.

For raising a number to a power, you would use the Math.pow function.

answered Jan 25 '12 at 20:33

Robert Harvey

score 3 · Accepted Answer · answered Jan 25 '12 at 20:38

^ 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

score 1 · Answer 3 · answered Jan 25 '12 at 20:33

1

That one is the bitwise XOR operator.

answered Jan 25 '12 at 20:33

Tudor

score 1 · Answer 4 · edited May 23 '17 at 12:02

1

edited May 23 '17 at 12:02

Community

answered Jan 25 '12 at 20:35

4 Answers4