A+B=>A,没有考虑溢出的可能性,所以是有bug的。
所有跟帖:
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假设是unsigned。如果有a+b有overflow
-g9-
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12/21/2013 postreply
19:57:55
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u can get negative number. Same for + and -
-inet-fan-
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12/21/2013 postreply
20:59:34
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How would you get a negative number?
-g9-
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12/21/2013 postreply
21:03:33
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A=A XOR B, B= A XOR B, A = A XOR B, done
-inet-fan-
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12/21/2013 postreply
20:43:06
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不错。是自己搞出来的?
-g9-
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12/21/2013 postreply
21:14:29
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Come-on. That is an appetizer in interview
-inet-fan-
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12/22/2013 postreply
16:40:21
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老大,🐂
-wxcmvyanyan-
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12/21/2013 postreply
21:36:32
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🐂是个啥东东?
-inet-fan-
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12/22/2013 postreply
16:46:33