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6. I bet you thought you were done with XOR. Nope, sorry. XOR is magical, so Im going to force feed it to you. Feast on the magic and thank me later. a) Let us begin with two 8-bit binary strings, A and B. Assume at first A = 01001010 and B has the same value. Take A and B and XOR them together in a bitwise fashion (XOR each bit of A with each bit of B. What bit string do you end up with? b) Now keep A the same and change B to 01001110 (we’ve flipped one bit of B). XOR them together again. What do you get now? c) Now set B to -A. XOR them together. What do you get? d) What conclusions can you draw from this? e) Using the conclusions you’ve drawn, outline a procedure for how youd calculate how far two binary strings are from one another, namely how many bit positions differ between the two strings? Pseudocode, C code, or a summary are fine here. unsigned char x = a ^ b; // a XOR b (a and b unsigned differ = 0; for i = 0; i < 7; i++) {

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