{"id":1986,"date":"2021-08-03T15:45:34","date_gmt":"2021-08-03T07:45:34","guid":{"rendered":"https:\/\/egonlin.com\/?p=1986"},"modified":"2022-02-07T16:10:31","modified_gmt":"2022-02-07T08:10:31","slug":"%e4%bd%8d%e8%bf%90%e7%ae%97","status":"publish","type":"post","link":"https:\/\/egonlin.com\/?p=1986","title":{"rendered":"\u4f4d\u8fd0\u7b97"},"content":{"rendered":"

\u4e00 \u524d\u8a00<\/h2>\n

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\"\"<\/div><\/p>\n
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\n\u200b    \u4e3b\u8981\u539f\u56e0\uff1a\u4f7f\u7528\u8865\u7801\uff0c\u53ef\u4ee5\u5c06\u7b26\u53f7\u4f4d\u548c\u5176\u5b83\u4f4d\u7edf\u4e00\u5904\u7406\uff1b\u540c\u65f6\uff0c\u51cf\u6cd5\u4e5f\u53ef\u6309\u52a0\u6cd5\u6765\u5904\u7406\uff0c\u9700\u8981\u6ce8\u610f\u7684\u662f\u4e24\u4e2a\u7528 \u8865\u7801\u8868\u793a\u7684\u6570\u76f8\u52a0\u65f6\uff0c\u5982\u679c\u6700\u9ad8\u4f4d\uff08\u7b26\u53f7\u4f4d\uff09\u6709\u8fdb\u4f4d\uff0c\u5219\u8fdb\u4f4d\u88ab\u820d\u5f03\uff0c\u5904\u7406\u5b8c\u540e\u6211\u4eec\u5982\u4e0a\u56fe\u6240\u793a\u7528\u8865\u7801\u53cd\u63a8\u51fa\u771f\u503c\u5373\u53ef\uff0c\u4f8b\u5982\u8ba1\u7b97\u673a\u5728\u8ba1\u7b978-3\u7684\u65f6\u5019\uff0c\u4f1a\u8fd9\u4e48\u505a8+\uff08-3\uff09\uff0c\u5177\u4f53\u5982\u4e0b<\/p>\n
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\u7ec3\u4e60\uff1a8+\uff08-9\uff09<\/p>\n
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\u200b    \u975e\u5e38\u9707\u64bc\u4eba\u5fc3\u7684\u8bbe\u8ba1\uff0c\u6709\u4e86\u8865\u7801\u4ee5\u540e\uff0c\u51cf\u6cd5\u90fd\u53ef\u4ee5\u5f53\u505a\u52a0\u6cd5\u53bb\u8fd0\u7b97\uff0c\u4f60\u53ef\u77e5\u9053\uff0c\u8fd9\u5c06\u6781\u5927\u5730\u7b80\u5316\u8ba1\u7b97\u673a\u7684\u8fd0\u7b97\u8bbe\u8ba1\u3002\u4e0d\u4ec5\u5982\u6b64\uff01\uff01\uff01<\/p>\n
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\u4e09 \u4f4d\u8fd0\u7b97<\/h2>\n
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3.1 \u6309\u4f4d\u4e0e&<\/h4>\n
\u793a\u4f8b1\uff1a8 & -3<\/p>\n
\u7b2c\u4e00\u6b65\uff1a\u771f\u503c->\u539f\u7801->\u53cd\u7801->\u8865\u7801\n    \u771f\u503c\uff1a8\n    \u539f\u7801\uff1a0000 1000  \n    \u53cd\u7801\uff1a0000 1000\n    \u8865\u7801\uff1a0000 1000\n\n    \u771f\u503c\uff1a-3\n    \u539f\u7801\uff1a1000 0011  \n    \u53cd\u7801\uff1a1111 1100\n    \u8865\u7801\uff1a1111 1101\n\n\u7b2c\u4e8c\u6b65\uff1a\u8865\u7801\u4e4b\u95f4\u7684\u8fd0\u7b97\uff0c\u6b64\u5904\u4e3a&\n    8\u7684\u8865\u7801\uff1a0000 1000\n   -3\u7684\u8865\u7801\uff1a1111 1101\n    &\u5f97\u8865\u7801\uff1a0000 1000\n\n\u7b2c\u4e09\u6b65\uff1a\u8865\u7801->\u53cd\u7801->\u539f\u7801->\u771f\u503c\n    \u4e0a\u4e00\u6b65\u5f97\u5230\u7684\u8865\u7801\u7ed3\u679c\uff1a0000 1000\n    \u7b26\u53f7\u4f4d\u662f0\uff0c\u4e3a\u6b63\u6570\uff0c\u90a3\u4e48\u5c31\u7b80\u5355\u4e86\uff0c\u6b63\u6570\u7684\u539f\u3001\u53cd\u3001\u8865\u7801\u90fd\u4e00\u6837\uff0c\u6240\u4ee5\u4e00\u6b65\u5230\u4f4d\n    \u8865\u7801->\u53cd\u7801->\u539f\u7801\uff1a0000 1000\n\n    \u539f\u7801->\u771f\u503c\uff1a8<\/code><\/pre>\n
\u793a\u4f8b2\uff1a-8 & -9<\/p>\n
\u7b2c\u4e00\u6b65\uff1a\u771f\u503c->\u539f\u7801->\u8865\u7801\n    \u771f\u503c\uff1a-8\n    \u539f\u7801\uff1a1000 1000  \n    \u53cd\u7801\uff1a1111 0111\n    \u8865\u7801\uff1a1111 1000\n\n    \u771f\u503c\uff1a-9\n    \u539f\u7801\uff1a1000 1001  \n    \u53cd\u7801\uff1a1111 0110\n    \u8865\u7801\uff1a1111 0111\n\n\u7b2c\u4e8c\u6b65\uff1a\u8865\u7801\u4e4b\u95f4\u7684\u8fd0\u7b97\uff0c\u6b64\u5904\u4e3a&\n   -8\u7684\u8865\u7801\uff1a1111 1000\n   -9\u7684\u8865\u7801\uff1a1111 0111\n    &\u5f97\u8865\u7801\uff1a1111 0000 \n\n\u7b2c\u4e09\u6b65\uff1a\u8865\u7801->\u53cd\u7801->\u539f\u7801->\u771f\u503c\n    \u8865\u7801->\u53cd\u7801\n        \u8865\u7801\u7ed3\u679c\uff1a1111 0000 \n        \u7b26\u53f7\u4f4d\u662f1\uff0c\u4e3a\u8d1f\u6570\uff0c\u53c2\u7167\u4e0a\u56fe2\u7684\u6b65\u9aa4\n\n        \u8865\u7801->\u53cd\u7801\uff1a-1\uff0c\u5f97\u5230\u53cd\u7801\uff1a1110 1111\n\n    \u53cd\u7801->\u539f\u7801\uff1a\u7b26\u53f7\u4f4d\u4e0d\u53d8\uff0c\u5176\u4f59\u4f4d\u53d6\u53cd\uff0c\u5f97\u5230\u539f\u7801\uff1a1001 0000\n\n    \u539f\u7801->\u771f\u503c\uff1a-16<\/code><\/pre>\n
3.2 \u6309\u4f4d\u6216|<\/h4>\n
\u793a\u4f8b1\uff1a-8 | -9<\/p>\n
\u7b2c\u4e00\u6b65\uff1a\u771f\u503c->\u539f\u7801->\u8865\u7801\n    \u771f\u503c\uff1a-8\n    \u539f\u7801\uff1a1000 1000  \n    \u53cd\u7801\uff1a1111 0111\n    \u8865\u7801\uff1a1111 1000\n\n    \u771f\u503c\uff1a-9\n    \u539f\u7801\uff1a1000 1001  \n    \u53cd\u7801\uff1a1111 0110\n    \u8865\u7801\uff1a1111 0111\n\n\u7b2c\u4e8c\u6b65\uff1a\u8865\u7801\u4e4b\u95f4\u7684\u8fd0\u7b97\uff0c\u6b64\u5904\u4e3a|\n   -8\u7684\u8865\u7801\uff1a1111 1000\n   -9\u7684\u8865\u7801\uff1a1111 0111\n    |\u5f97\u8865\u7801\uff1a1111 1111 \n\n\u7b2c\u4e09\u6b65\uff1a\u8865\u7801->\u53cd\u7801->\u539f\u7801->\u771f\u503c\n    \u8865\u7801->\u53cd\u7801\n        \u8865\u7801\u7ed3\u679c\uff1a1111 1111 \n        \u7b26\u53f7\u4f4d\u662f1\uff0c\u4e3a\u8d1f\u6570\uff0c\u53c2\u7167\u4e0a\u56fe2\u7684\u6b65\u9aa4\n\n        \u8865\u7801->\u53cd\u7801\uff1a-1\uff0c\u5f97\u5230\u53cd\u7801\uff1a1111 1110\n\n    \u53cd\u7801->\u539f\u7801\uff1a\u7b26\u53f7\u4f4d\u4e0d\u53d8\uff0c\u5176\u4f59\u4f4d\u53d6\u53cd\uff0c\u5f97\u5230\u539f\u7801\uff1a1000 0001\n\n    \u539f\u7801->\u771f\u503c\uff1a-1\n<\/code><\/pre>\n
3.3 \u6309\u4f4d\u5f02\u6216^<\/h4>\n
\u793a\u4f8b1\uff1a-8 ^ -9<\/p>\n
\u7b2c\u4e00\u6b65\uff1a\u771f\u503c->\u539f\u7801->\u8865\u7801\n    \u771f\u503c\uff1a-8\n    \u539f\u7801\uff1a1000 1000  \n    \u53cd\u7801\uff1a1111 0111\n    \u8865\u7801\uff1a1111 1000\n\n    \u771f\u503c\uff1a-9\n    \u539f\u7801\uff1a1000 1001  \n    \u53cd\u7801\uff1a1111 0110\n    \u8865\u7801\uff1a1111 0111\n\n\u7b2c\u4e8c\u6b65\uff1a\u8865\u7801\u4e4b\u95f4\u7684\u8fd0\u7b97\uff0c\u6b64\u5904\u4e3a^\n   -8\u7684\u8865\u7801\uff1a1111 1000\n   -9\u7684\u8865\u7801\uff1a1111 0111\n    ^\u5f97\u8865\u7801\uff1a0000 1111 \n\n\u7b2c\u4e09\u6b65\uff1a\u8865\u7801->\u53cd\u7801->\u539f\u7801->\u771f\u503c\n    \u4e0a\u4e00\u6b65\u5f97\u5230\u7684\u8865\u7801\u7ed3\u679c\uff1a0000 1111\n    \u7b26\u53f7\u4f4d\u662f0\uff0c\u4e3a\u6b63\u6570\uff0c\u90a3\u4e48\u5c31\u7b80\u5355\u4e86\uff0c\u6b63\u6570\u7684\u539f\u3001\u53cd\u3001\u8865\u7801\u90fd\u4e00\u6837\uff0c\u6240\u4ee5\u4e00\u6b65\u5230\u4f4d\n    \u8865\u7801->\u53cd\u7801->\u539f\u7801\uff1a0000 1111\n\n    \u539f\u7801->\u771f\u503c\uff1a15\n<\/code><\/pre>\n
\u793a\u4f8b2\uff1a^ -8 \u5355\u72ec\u4e00\u4e2a^\u4ee3\u8868\u53d6\u53cd\u7684\u610f\u601d(\u9002\u7528\u4e8ego\uff0c\u4e0d\u9002\u7528\u4e8epython)<\/p>\n
\u7b2c\u4e00\u6b65\uff1a\u771f\u503c->\u539f\u7801->\u8865\u7801\n    \u771f\u503c\uff1a-8\n    \u539f\u7801\uff1a1000 1000  \n    \u53cd\u7801\uff1a1111 0111\n    \u8865\u7801\uff1a1111 1000\n\n\u7b2c\u4e8c\u6b65\uff1a\n   -8\u7684\u8865\u7801\uff1a1111 1000\n ^\u53d6\u53cd\u5f97\u8865\u7801\uff1a0000 0111 \n\n\u7b2c\u4e09\u6b65\uff1a\u8865\u7801->\u53cd\u7801->\u539f\u7801->\u771f\u503c\n    \u4e0a\u4e00\u6b65\u5f97\u5230\u7684\u8865\u7801\u7ed3\u679c\uff1a0000 0111\n    \u7b26\u53f7\u4f4d\u662f0\uff0c\u4e3a\u6b63\u6570\uff0c\u90a3\u4e48\u5c31\u7b80\u5355\u4e86\uff0c\u6b63\u6570\u7684\u539f\u3001\u53cd\u3001\u8865\u7801\u90fd\u4e00\u6837\uff0c\u6240\u4ee5\u4e00\u6b65\u5230\u4f4d\n    \u8865\u7801->\u53cd\u7801->\u539f\u7801\uff1a0000 0111\n\n    \u539f\u7801->\u771f\u503c\uff1a7\n<\/code><\/pre>\n
3.4 \u5411\u5de6\u4f4d\u79fb<< n<\/h4>\n
\u793a\u83031\uff1a-8 << 3<\/p>\n
\u7b2c\u4e00\u6b65\uff1a\u771f\u503c->\u539f\u7801->\u8865\u7801\n    \u771f\u503c\uff1a-8\n    \u539f\u7801\uff1a1000 1000  \n    \u53cd\u7801\uff1a1111 0111\n    \u8865\u7801\uff1a1111 1000\n\n\u7b2c\u4e8c\u6b65\uff1a<< n \u5404\u4e8c\u8fdb\u5236\u4f4d\u5168\u90e8\u5de6\u79fbn\u4f4d\uff0c\u9ad8\u4f4d\u4e22\u5f03\uff0c\u4f4e\u4f4d\u88650\n    \u8865\u7801\uff1a1111 1000\n    <<3: 1100 0000\n\n\u7b2c\u4e09\u6b65\uff1a\u8865\u7801->\u53cd\u7801->\u539f\u7801->\u771f\u503c\n    \u8865\u7801->\u53cd\u7801\n        \u8865\u7801\u7ed3\u679c\uff1a1100 0000\n        \u7b26\u53f7\u4f4d\u662f1\uff0c\u4e3a\u8d1f\u6570\uff0c\u53c2\u7167\u4e0a\u56fe2\u7684\u6b65\u9aa4\n\n        \u8865\u7801->\u53cd\u7801\uff1a-1\uff0c\u5f97\u5230\u53cd\u7801\uff1a1011 1111\n\n    \u53cd\u7801->\u539f\u7801\uff1a\u7b26\u53f7\u4f4d\u4e0d\u53d8\uff0c\u5176\u4f59\u4f4d\u53d6\u53cd\uff0c\u5f97\u5230\u539f\u7801\uff1a1100 0000\n\n    \u539f\u7801->\u771f\u503c\uff1a-64\n<\/code><\/pre>\n
3.5 \u5411\u53f3\u4f4d\u79fb>> n<\/h4>\n
\u793a\u83031\uff1a-8 >> 3<\/p>\n
\u7b2c\u4e00\u6b65\uff1a\u771f\u503c->\u539f\u7801->\u8865\u7801\n    \u771f\u503c\uff1a-8\n    \u539f\u7801\uff1a1000 1000  \n    \u53cd\u7801\uff1a1111 0111\n    \u8865\u7801\uff1a1111 1000\n\n\u7b2c\u4e8c\u6b65\uff1a>> n \u5404\u4e8c\u8fdb\u5236\u4f4d\u5168\u90e8\u53f3\u79fbn\u4f4d\uff0c\u5982\u679c\u662f\u6b63\u6570\uff0c\u5219\u9ad8\u4f4d\u88650\uff0c\u5982\u679c\u662f\u8d1f\u6570\u5219\u9ad8\u4f4d\u88651\n    \u8865\u7801\uff1a1111 1000\n    >>3: 1111 1111\n\n\u7b2c\u4e09\u6b65\uff1a\u8865\u7801->\u53cd\u7801->\u539f\u7801->\u771f\u503c\n    \u8865\u7801->\u53cd\u7801\n        \u8865\u7801\u7ed3\u679c\uff1a1111 1111\n        \u7b26\u53f7\u4f4d\u662f1\uff0c\u4e3a\u8d1f\u6570\uff0c\u53c2\u7167\u4e0a\u56fe2\u7684\u6b65\u9aa4\n\n        \u8865\u7801->\u53cd\u7801\uff1a-1\uff0c\u5f97\u5230\u53cd\u7801\uff1a1111 1110\n\n    \u53cd\u7801->\u539f\u7801\uff1a\u7b26\u53f7\u4f4d\u4e0d\u53d8\uff0c\u5176\u4f59\u4f4d\u53d6\u53cd\uff0c\u5f97\u5230\u539f\u7801\uff1a1000 0001\n\n    \u539f\u7801->\u771f\u503c\uff1a-1\n<\/code><\/pre>\n
\u793a\u83032\uff1a8 >> 3<\/p>\n
\u7b2c\u4e00\u6b65\uff1a\u771f\u503c->\u539f\u7801->\u8865\u7801\n    \u771f\u503c\uff1a8\n    \u539f\u7801\uff1a0000 1000  \n    \u53cd\u7801\uff1a0000 1000\n    \u8865\u7801\uff1a0000 1000\n\n\u7b2c\u4e8c\u6b65\uff1a>> n \u5404\u4e8c\u8fdb\u5236\u4f4d\u5168\u90e8\u53f3\u79fbn\u4f4d\uff0c\u5982\u679c\u662f\u6b63\u6570\uff0c\u5219\u9ad8\u4f4d\u88650\uff0c\u5982\u679c\u662f\u8d1f\u8d23\u5219\u9ad8\u4f4d\u88651\n    \u8865\u7801\uff1a0000 1000\n    >>3: 0000 0001\n\n\u7b2c\u4e09\u6b65\uff1a\u8865\u7801->\u53cd\u7801->\u539f\u7801->\u771f\u503c\n    \u4e0a\u4e00\u6b65\u5f97\u5230\u7684\u8865\u7801\u7ed3\u679c\uff1a0000 0001\n    \u7b26\u53f7\u4f4d\u662f0\uff0c\u4e3a\u6b63\u6570\uff0c\u90a3\u4e48\u5c31\u7b80\u5355\u4e86\uff0c\u6b63\u6570\u7684\u539f\u3001\u53cd\u3001\u8865\u7801\u90fd\u4e00\u6837\uff0c\u6240\u4ee5\u4e00\u6b65\u5230\u4f4d\n    \u8865\u7801->\u53cd\u7801->\u539f\u7801\uff1a0000 0001\n\n    \u539f\u7801->\u771f\u503c\uff1a1\n<\/code><\/pre>\n
\u793a\u83033\uff1a-300 >> 8<\/p>\n
\u7b2c\u4e00\u6b65\uff1a\u771f\u503c->\u539f\u7801->\u8865\u7801\n    \u771f\u503c\uff1a-300  \n    \u539f\u7801\uff1a1000 0001 0010 1100 # -300 \u5df2\u7ecf\u8d85\u8fc7\u4e868\u4f4d\u4e8c\u8fdb\u5236\u80fd\u8868\u793a\u7684\u8303\u56f4\uff0c\u9700\u8981\u752816\u4f4d\u8868\u793a\n    \u53cd\u7801\uff1a1111 1110 1101 0011\n    \u8865\u7801\uff1a1111 1110 1101 0100\n\n\u7b2c\u4e8c\u6b65\uff1a>> n \u5404\u4e8c\u8fdb\u5236\u4f4d\u5168\u90e8\u53f3\u79fbn\u4f4d\uff0c\u5982\u679c\u662f\u6b63\u6570\uff0c\u5219\u9ad8\u4f4d\u88650\uff0c\u5982\u679c\u662f\u8d1f\u8d23\u5219\u9ad8\u4f4d\u88651\n    \u8865\u7801\uff1a1111 1110 1101 0100\n    >>8: 1111 1111 1111 1110\n\n\u7b2c\u4e09\u6b65\uff1a\u8865\u7801->\u53cd\u7801->\u539f\u7801->\u771f\u503c\n    \u8865\u7801->\u53cd\u7801\n        \u8865\u7801\u7ed3\u679c\uff1a1111 1111 1111 1110\n        \u7b26\u53f7\u4f4d\u662f1\uff0c\u4e3a\u8d1f\u6570\uff0c\u53c2\u7167\u4e0a\u56fe2\u7684\u6b65\u9aa4\n\n        \u8865\u7801->\u53cd\u7801\uff1a-1\uff0c\u5f97\u5230\u53cd\u7801\uff1a1111 1111 1111 1101\n\n    \u53cd\u7801->\u539f\u7801\uff1a\u7b26\u53f7\u4f4d\u4e0d\u53d8\uff0c\u5176\u4f59\u4f4d\u53d6\u53cd\uff0c\u5f97\u5230\u539f\u7801\uff1a1000 0000 0000 0010\n\n    \u539f\u7801->\u771f\u503c\uff1a-2\n<\/code><\/pre>\n
\u56db \u4f4d\u8fd0\u7b97\u9ad8\u7ea7\u64cd\u4f5c<\/h2>\n
\u4f4d\u8fd0\u7b97\u662f cpu \u76f4\u63a5\u652f\u6301\u7684\uff0c\u6548\u7387\u6700\u9ad8\uff0c\u4f4d\u8fd0\u7b97\u53ef\u80fd\u5728\u5e73\u5e38\u7684\u7f16\u7a0b\u4e2d\u4f7f\u7528\u7684\u5e76\u4e0d\u591a\uff0c\u4f46\u6d89\u53ca\u5230\u5e95\u5c42\u4f18\u5316\uff0c\u4e00\u4e9b\u7b97\u6cd5\u53ca\u6e90\u7801\u53ef\u80fd\u4f1a\u7ecf\u5e38\u9047\u89c1\uff0c\u4e0b\u9762\u6765\u4ecb\u7ecd\u4e00\u4e0b\u98ce\u9a9a\u7684\u64cd\u4f5c<\/p>\n
4.1 \u7528\u4f4d\u8fd0\u7b97 & \u53d6\u4ee3 % \u53d6\u6a21<\/h4>\n
X % 2^n = X & (2^n \u2013 1)\n\u6ce8\u610f\uff1a\u7528\u4f4d\u8fd0\u7b97 & \u6765\u53d6\u4ee3 % \u53d6\u6a21\u9700\u8981\u88ab\u53d6\u6a21\u7684\u6570\u5fc5\u987b\u662f2\u7684\u5e42\u624d\u6210\u7acb\n<\/code><\/pre>\n
\u793a\u83031\uff1a<\/p>\n
10 % (2^3) \u7b49\u4e8e 10 & (2^3-1)\n\u5373\n10 % 8 \u7b49\u4e8e 10 & 7\n<\/code><\/pre>\n
\u793a\u83032\uff1a<\/p>\n
10 % (2^2) \u7b49\u4e8e 10 & (2^2-1)\n\u5373\n10 % 4 \u7b49\u4e8e 10 & 3\n<\/code><\/pre>\n
4.2 \u5c06\u4e00\u4e2a\u6570\u5de6\u79fb n \u4f4d\uff0c\u76f8\u5f53\u4e8e\u4e58\u4ee5\u4e86 2 \u7684 n \u6b21\u65b9\uff0c\u53f3\u79fbn\u4f4d\uff0c\u76f8\u5f53\u4e8e\u9664\u4ee52\u7684n\u6b21\u65b9\u53d6\u6574<\/h4>\n
10 << 3 \u7b49\u540c\u4e8e10 * 2^3 \n10 >> 3 \u7b49\u540c\u4e8e10 \/ 3\n<\/code><\/pre>\n
4.3 \u5224\u65ad\u5947\u5076<\/h4>\n
\u6211\u4eec\u53ef\u4ee5\u5229\u7528 & \u8fd0\u7b97\u7b26\u7684\u7279\u6027\uff0c\u6765\u5224\u65ad\u4e8c\u8fdb\u5236\u6570\u7b2c\u4e00\u4f4d\u662f0\u8fd8\u662f1\u3002\n\u7528if ((a & 1) == 0) \u4ee3\u66ff if (a % 2 == 0)\u6765\u5224\u65ada\u662f\u4e0d\u662f\u5076\u6570\u3002\n<\/code><\/pre>\n
4.4 \u4ea4\u4e92\u6570\u503c<\/h4>\n
1\u3001\u501f\u52a9\u4e34\u65f6\u53d8\u91cf\u6765\u4ea4\u4e92\u6570\u503c\n\n    a:=10\n    b:=20\n\n    temp:=a\n    a=b\n    b=temp\n\n    fmt.Println(a,b) \/\/ \u7ed3\u679c20 10\n2\u3001\u501f\u52a9\u7d2f\u52a0\u548c\n\u5982\u679c\u8003\u8651\u5230\u5185\u5b58\uff0c\u4e0d\u5e0c\u671b\u4f7f\u7528\u4e34\u65f6\u53d8\u91cf\uff08\u5176\u5b9e\u5c31\u662f\u4e3a\u4e86\u70ab\u9177\uff09\uff0c\u53ef\u4ee5\u8fd9\u6837\u5b9e\u73b0\uff1a\n\n    a:=10\n    b:=20\n\n    a = a + b\n    b = a - b\n    a = a - b\n    fmt.Println(a,b) \/\/ \u7ed3\u679c20 10\n\n\u4ece\u6570\u5b66\u89d2\u5ea6\u6765\u5206\u6790\u4e00\u4e0b\n- \u7b2c\u4e00\u6b65\uff1aa = a + b\n- \u7b2c\u4e8c\u6b65\uff1ab = a - b = (a + b) - b = a\n- \u7b2c\u4e09\u6b65\uff1aa = a - b = (a + b) - b = (a + b) - a = b\n\n3\u3001\u4f7f\u7528 ^ \u4f4d\u8fd0\u7b97\u7b26\n\u5982\u679c\u60f3\u8981\u66f4\u70ab\u9177\u4e00\u70b9\u53ef\u4ee5\u4f7f\u7528 ^ \u6765\u5e2e\u5fd9\u5b9e\u73b0\uff1a\n\u5148\u6765\u4e86\u89e3\u4e00\u4e0b ^ \u7684\u51e0\u4e2a\u7279\u6027\uff1a\na ^ a = 0\na ^ 0 = a\n(a ^ b) ^ c = a ^ (b ^ c)\n\n\u4ee3\u7801\uff1a\n    a:=10\n    b:=20\n\n    a ^= b;\n    b ^= a;\n    a ^= b;\n    fmt.Println(a,b) \/\/ \u7ed3\u679c20 10\n\n\u4ece\u6570\u5b66\u89d2\u5ea6\u6765\u5206\u6790\u4e00\u4e0b\uff1a\n- \u7b2c\u4e00\u6b65\uff1aa = a ^ b\n- \u7b2c\u4e8c\u6b65\uff1ab = a ^ b = (a ^ b) ^ b = a ^ (b ^ b) = a ^ 0 = a\n- \u7b2c\u4e09\u6b65\uff1aa = a ^ b = (a ^ b) ^ b = (a ^ a) ^ b = b ^ 0 = b\n<\/code><\/pre>\n
4.5 \u9879\u76ee\u4e2d\u7684\u5e94\u7528<\/h4>\n
\u5728\u9879\u76ee\u4e2d\u53ef\u4ee5\u7528\u4f4d\u8fd0\u7b97\u8fdb\u884c\u4e00\u4e9b\u72b6\u6001\u7684\u8fd0\u7b97\uff0c\u6548\u7387\u6781\u5176\u9ad8\uff0c\u4f8b\u5982\uff1a\u73b0\u5728\u6211\u4eec\u6709\u4e00\u4e9b\u7231\u597d\u9700\u6c42\uff0c\u8fd9\u4e9b\u7231\u597d\u6709
\n\u8db3\u7403  \u7fbd\u6bdb\u7403  \u4e52\u4e53\u7403  \u7bee\u7403  \u6e38\u6cf3
\n\u5982\u679c\u6309\u7167\u6574\u6570\u7684\u5f62\u5f0f\u53bb\u5b9a\u4e49\uff0c\u90a3\u5c31\u6709\u65e0\u6570\u591a\u79cd\u60c5\u51b5\uff0c\u6bd5\u7adf\u53ef\u4ee5\u4e24\u4e24\u7ec4\u5408\u561b\uff0cpython\u4e2d\u7684\u5217\u8868\u3001go\u4e2d\u7684\u6570\u7ec4\u90fd\u4e0d\u662f\u6700\u4f73\u9009\u62e9<\/p>\n
\u53ef\u4ee5\u76f4\u63a5\u7528\u4e8c\u8fdb\u5236\u4f4d\u8868\u793a\uff0c1\u4ee3\u8868\u7231\u597d\uff0c0\u4ee3\u8868\u6ca1\u6709\u8be5\u7231\u597d<\/p>\n
\u7231\u597d\uff1a\u53ea\u6709\u8db3\u7403\n\u8868\u793a\uff1a1 0 0 0 0\n\n\u7231\u597d\uff1a\u4e52\u4e53\u7403\u3001\u6e38\u6cf3\n\u8868\u793a\uff1a0 0 1 0 1\n<\/code><\/pre>\n
\u63a5\u4e0b\u6765\u5c31\u53ef\u4ee5\u7528\u4f4d\u8fd0\u7b97\u8fdb\u884c\u4e00\u4e9b\u98ce\u9a9a\u7684\u64cd\u4f5c\u5566\uff0c\u4f8b\u5982<\/p>\n
\u5e94\u75281\uff1a\u68c0\u67e5\u662f\u5426\u5b58\u5728\u67d0\u4e2a\u7231\u597d<\/h5>\n
\u559c\u6b22\u8db3\u7403\u7684\u72b6\u6001\u662f\uff1a1 0 0 0 0 \n     \u5c0f\u660e\u7684\u559c\u597d\uff1a0 1 0 1 0\n \u4e0e&\u8ba1\u7b97\u7684\u7ed3\u679c\u4e3a\uff1a0 0 0 0 0\uff0c\u8fd4\u56de\u4f4dfalse\uff0c\u6240\u4ee5\u5c0f\u660e\u4e0d\u5b58\u5728\u559c\u597d\u8db3\u7403\u7684\u72b6\u6001\n<\/code><\/pre>\n
\u5e94\u75282\uff1a\u6dfb\u52a0\u67d0\u4e2a\u7231\u597d<\/h5>\n
\u559c\u6b22\u8db3\u7403\uff1a   1 0 0 0 0\n\u5c0f\u660e\u7684\u559c\u597d\uff1a 0 1 0 1 0 \n\u6216|\u8fd0\u7b97\u4e4b\u540e\uff1a 1 1 0 1 0\n<\/code><\/pre>\n
\u5e94\u75283\uff1a\u79fb\u9664\u67d0\u4e2a\u7231\u597d<\/h5>\n
\uff08\u4f20\u5165\uff09\u559c\u597d\u8db3\u7403 \uff1a 1 0 0 0 0\n\n    \u5c0f\u660e\u7684\u559c\u597d\uff1a   1 0 1 0 1\n\u5148\u5c06\u8db3\u7403\u53d6\u53cd^ \uff1a   0 1 1 1 1\n   \u518d\u8fdb\u4e0e&\u8fd0\u7b97\uff1a   0 0 1 0 1\n<\/code><\/pre>\n
\u4ee5\u4e0a\u98ce\u9a9a\u64cd\u4f5c\u5747\u9002\u7528\u4e8epython\uff01\uff01\uff01egon\u5fd9\u5fd9\u53e8\u53e8\u5199\u4e86\u4e00\u5929\uff0c\u5e0c\u671b\u80fd\u591f\u5e2e\u52a9\u5230\u4f60<\/p>\n","protected":false},"excerpt":{"rendered":"
\u4e00 \u524d\u8a00 \u200b \u4f4d\u8fd0\u7b97\uff0c\u4e00\u4e2a\u6781\u5bb9\u6613\u88ab\u4f4e\u7aef\u7801\u519c\u5ffd\u89c6\u7684\u5730\u5e26\uff0c\u56e0\u4e3a\u5b83\u7565\u5fae\u9700\u8981\u7528\u4e00\u4e22\u4e22\u667a\u5546\uff0c\u771f\u7684\u53ea\u6709\u90a3\u4e48\u4e00\u4e22\u4e22\uff0c\u4f46\u9ad8\u624b\u4e0e […]<\/p>\n","protected":false},"author":3,"featured_media":2689,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[258],"tags":[260,261,263,262],"_links":{"self":[{"href":"https:\/\/egonlin.com\/index.php?rest_route=\/wp\/v2\/posts\/1986"}],"collection":[{"href":"https:\/\/egonlin.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/egonlin.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/egonlin.com\/index.php?rest_route=\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/egonlin.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1986"}],"version-history":[{"count":0,"href":"https:\/\/egonlin.com\/index.php?rest_route=\/wp\/v2\/posts\/1986\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/egonlin.com\/index.php?rest_route=\/wp\/v2\/media\/2689"}],"wp:attachment":[{"href":"https:\/\/egonlin.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1986"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/egonlin.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1986"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/egonlin.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1986"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}