{"id":50,"date":"2018-10-15T18:44:01","date_gmt":"2018-10-15T10:44:01","guid":{"rendered":"https:\/\/chenqinghe.com\/?p=50"},"modified":"2018-10-15T18:45:05","modified_gmt":"2018-10-15T10:45:05","slug":"%e4%bb%a3%e7%a0%81%e4%b8%ad%e7%9a%84%e6%95%b0%e5%ad%a6%e5%8e%9f%e7%90%86%e4%b9%8b%e4%bd%8d%e5%9b%be%e7%9a%84%e5%ba%94%e7%94%a8","status":"publish","type":"post","link":"https:\/\/chenqinghe.com\/?p=50","title":{"rendered":"\u4ee3\u7801\u4e2d\u7684\u6570\u5b66\u539f\u7406\u4e4b\u4f4d\u56fe\u7684\u5e94\u7528"},"content":{"rendered":"

\u6700\u8fd1\u5728\u505a\u4e00\u4e2a\u9879\u76ee\uff0c\u5176\u4e2d\u6709\u6587\u4ef6\u540c\u6b65\u7684\u9700\u6c42\uff0c\u5e76\u4e14\u6587\u4ef6\u4f1a\u7ecf\u5e38\u66f4\u65b0\u3002\u5982\u679c\u6bcf\u6b21\u90fd\u5c06\u6587\u4ef6\u5168\u91cf\u4e0a\u4f20\uff0c\u90a3\u4e48\u6bcf\u6b21\u90fd\u4e0a\u4f20\u672a\u6539\u52a8\u7684\u90e8\u5206\uff0c\u80af\u5b9a\u4f1a\u6d6a\u8d39\u5927\u91cf\u7684\u6d41\u91cf\u3002\u56e0\u6b64\u91c7\u7528\u5bf9\u6587\u4ef6\u5206\u5757\u7684\u65b9\u5f0f\uff0c\u6bcf\u6b21\u4e0a\u4f20\u524d\u6bd4\u8f83\u6587\u4ef6\u5757\u7684\u5dee\u5f02\uff0c\u4ec5\u5c06\u5dee\u5f02\u90e8\u5206\u4e0a\u4f20\u5373\u53ef\uff0c\u8fd9\u6837\u4f1a\u51cf\u5c11\u5f88\u5927\u4e00\u90e8\u5206\u6d41\u91cf\u3002\u6bd4\u8f83\u5b8c\u7684\u5dee\u5f02\u90e8\u5206\u5927\u81f4\u53ef\u7528\u4e0b\u9762\u7684\u7ed3\u6784\u6765\u8868\u793a\uff1a<\/p>\n

type Difference struct {\r\n        FileName    string\r\n        Blocks      []int\r\n}<\/code><\/pre>\n
\u5176\u4e2d\uff0cFileName\u662f\u5df2\u4fee\u6539\u6587\u4ef6\u7684\u6587\u4ef6\u540d\uff0cBlocks\u662fint\u7c7b\u578b\u7684\u6570\u7ec4\uff0c\u662f\u5dee\u5f02\u6587\u4ef6\u5757\u5e8f\u53f7\u7684\u96c6\u5408\u3002<\/p>\n
<\/p>\n
\u7ecf\u63d0\u9192\uff0c\u5176\u5b9e\u4e0a\u8ff0\u7ed3\u6784\u8fd8\u6709\u4f18\u5316\u7684\u4f59\u5730\u3002<\/p>\n
int\u7c7b\u578b\u81f3\u5c11\u53ef\u518d\u5206\u4e3a\u4e24\u79cd\uff1aint32\u548cint64\uff0c\u5373\u752832bit\u621664bit\u6765\u8868\u793a\u4e00\u4e2a\u6574\u6570\u3002\u4ed6\u4eec\u53ef\u8868\u793a\u7684\u6574\u6570\u8303\u56f4\u663e\u7136\u662f\u4e0d\u540c\u7684\u3002\u62ffint32\u6765\u8bf4\uff0c\u5982\u679c1\u53f7\u5757\u548c2\u53f7\u5757\u6709\u4fee\u6539\uff0c\u90a3\u4e48\u5b83\u4eec\u7684\u4e8c\u8fdb\u5236\u5f62\u5f0f\u5982\u4e0b\uff1a<\/p>\n
\/\/ 1\r\n0000 0000  0000 0000  0000 0000  0000 0001\r\n\r\n\/\/ 2\r\n0000 0000  0000 0000  0000 0000  0000 0010<\/code><\/pre>\n
\u53ef\u4ee5\u770b\u5230\uff0c\u9664\u4e86\u6700\u53f3\u8fb9\u7684\u4e24bit\u662f\u4e0d\u540c\u7684\uff0c\u5176\u4f59\u7684\u5404bit\u5747\u76f8\u540c\uff0c\u90a3\u4e48\u8fd9\u4e00\u90e8\u5206\u6570\u636e\u5176\u5b9e\u662f\u53ef\u4ee5\u4e0d\u5fc5\u8981\u4f20\u8f93\u7684\uff0c\u5982\u679c\u662fint64\uff0c\u90a3\u4e48\u6d6a\u8d39\u7684\u8d44\u6e90\u5c31\u66f4\u591a\u4e86\u3002\u968f\u7740\u5dee\u5f02\u5757\u7684\u4e2a\u6570\u589e\u591a\uff0c\u5229\u7528\u7387\u4e5f\u968f\u4e4b\u4e0b\u964d<\/strong>\u3002<\/p>\n
\u6240\u4ee5\u53ef\u4ee5\u8003\u8651\u7528\u4f4d\u56fe<\/strong>\u7684\u65b9\u5f0f\u8fdb\u4e00\u6b65\u538b\u7f29\u3002<\/p>\n
\"\u300a\u4ee3\u7801\u4e2d\u7684\u6570\u5b66\u539f\u7406\u4e4b\u4f4d\u56fe\u7684\u5e94\u7528\u300b\"<\/p>\n
\u5982\u4e0a\u56fe\u6240\u793a\uff0c\u4f7f\u7528\u4e00\u4e32\u4e8c\u8fdb\u5236\u7684\u7b2c\u4e00\u4f4d\u6765\u6807\u8bc6\u7b2c\u4e00\u4e2a\u5757\u53730\u53f7\u5757\uff0c\u7b2c\u4e8c\u4f4d\u6765\u6807\u8bc61\u53f7\u5757\uff0c\u4f9d\u6b64\u7c7b\u63a8\u3002\u6211\u4eec\u75281\u6765\u8868\u793a\u67d0\u4e2a\u5757\u662f\u66f4\u6539\u4e86\u7684\uff0c0\u6765\u8868\u793a\u672a\u66f4\u6539\u7684\u5757\u3002\u8fd9\u6837\u539f\u6765\u7528\u6765\u5b58\u50a8\u4e00\u4e2a\u4e0d\u540c\u5757\u7684\u5e8f\u53f7\u76844\u4e2a\u5b57\u8282\u73b0\u5728\u53ef\u4ee5\u5b58\u50a832\u4e2a\u4e0d\u540c\u5757\uff0c8\u500d\u7684\u538b\u7f29\u7387\u53ef\u4ee5\u8bf4\u662f\u5f88\u5389\u5bb3\u4e86\u3002\u5e76\u4e14\uff0c\u968f\u7740\u5dee\u5f02\u5757\u7684\u4e2a\u6570\u589e\u591a\uff0c\u5229\u7528\u7387\u4e5f\u968f\u4e4b\u63d0\u5347<\/strong>\u3002<\/p>\n
\u7136\u800c\uff0c\u4e8b\u5b9e\u771f\u7684\u5982\u6b64\u4e30\u6ee1\u5417\uff1f<\/p>\n
\u8003\u8651\u4e00\u4e0b\u8fd9\u79cd\u60c5\u51b5\uff1a\u5047\u8bbe\u67d0\u4e2a\u6587\u4ef6\u67091G\uff0c\u5728\u8fd9\u4e2a\u6587\u4ef6\u7684\u672b\u5c3e\u6dfb\u52a0\u4e00\u4e2a\u5b57\u8282\u7684\u5185\u5bb9\u3002<\/p>\n
\u90a3\u4e48\u6309int32\u6570\u7ec4\u5b58\u50a8\uff0c\u6211\u4eec\u9700\u89814\u4e2a\u5b57\u8282\u3002\u6309\u4f4d\u5b58\u50a8\uff0c\u6211\u4eec\u9700\u89812^30\/2^3 = 2^27\u5b57\u8282\uff0c\u8fd9\u4e2a\u5dee\u8ddd\u5c31\u5927\u4e86\u53bb\u4e86\uff01\u56e0\u6b64\u7528\u4f4d\u56fe\u7684\u65b9\u5f0f\uff0c\u968f\u7740\u5dee\u5f02\u5757\u7684\u6700\u5927\u5757\u53f7\u7684\u589e\u5927\uff0c\u5229\u7528\u7387\u4e5f\u968f\u4e4b\u4e0b\u964d\u7684<\/strong>\u3002<\/p>\n
 <\/p>\n
\u6839\u636e\u4ee5\u4e0a\u6761\u4ef6\uff0c\u6211\u4eec\u77e5\u9053\u4e00\u5b9a\u53ef\u4ee5\u627e\u5230\u4e00\u4e2a\u5e73\u8861\u70b9\uff0c\u5728\u8fd9\u4e2a\u5e73\u8861\u70b9\u5904\uff0c\u4e24\u8005\u7684\u6548\u7387\u4f1a\u51e0\u4e4e\u4e00\u81f4\uff0c\u90a3\u4e48\u5982\u4f55\u627e\u5230\u8fd9\u4e2a\u5e73\u8861\u70b9\uff1f<\/p>\n
\u7ecf\u8fc7\u4ee5\u4e0a\u8fc7\u7a0b\uff0c\u53ef\u4ee5\u77e5\u9053\u5f71\u54cd\u5229\u7528\u6548\u7387\u7684\u56e0\u7d20\u6709\u4e24\u4e2a\uff1a1. \u5dee\u5f02\u5757\u7684\u4e2a\u6570\uff0c2. \u5dee\u5f02\u5757\u7684\u6700\u5927\u5757\u5e8f\u53f7\u3002\u5047\u8bbe\u6700\u5927\u5dee\u5f02\u5757\u7684\u5757\u5e8f\u53f7\u4e3ay\uff0c\u5dee\u5f02\u5757\u7684\u4e2a\u6570\u4e3ax\uff0c\u90a3\u4e48\u9700\u8981\u7684\u5b57\u8282\u6570\u5982\u4e0b\u8868\uff1a<\/p>\n
\"\u300a\u4ee3\u7801\u4e2d\u7684\u6570\u5b66\u539f\u7406\u4e4b\u4f4d\u56fe\u7684\u5e94\u7528\u300b\"<\/p>\n
\u5f53\u4e24\u8005\u9700\u8981\u7684\u7a7a\u95f4\u76f8\u7b49\u65f6\uff0c4x=y\/8\uff0c\u5373y=32x\uff0c\u51fd\u6570\u56fe\u5982\u4e0b\uff1a<\/p>\n
\"\u300a\u4ee3\u7801\u4e2d\u7684\u6570\u5b66\u539f\u7406\u4e4b\u4f4d\u56fe\u7684\u5e94\u7528\u300b\"<\/p>\n
\u53ef\u4ee5\u770b\u51fa\u5728\u9ec4\u8272\u7ebf\u7684\u4e0a\u65b9\uff0c\u4f7f\u7528int32\u5b58\u50a8\u6bd4\u8f83\u7701\u7a7a\u95f4\uff0c\u5728\u9ec4\u8272\u7ebf\u7684\u4e0b\u65b9\uff0c\u4f7f\u7528bitmap\u5b58\u50a8\u6bd4\u8f83\u7701\u7a7a\u95f4\u3002\uff08\u8bba\u8bc1\u90e8\u5206\u8f83\u7b80\u5355\uff0c\u6b64\u5904\u7701\u7565\uff09<\/p>\n
\u8fd9\u91cc\u5176\u5b9e\u8fd8\u6709\u4e2a\u6761\u4ef6\uff0c\u90a3\u5c31\u662f\uff0c\u6700\u5927\u5dee\u5f02\u5757\u7684\u5e8f\u53f7\u4e00\u5b9a\u662f\u5927\u4e8e\u5dee\u5f02\u5757\u7684\u4e2a\u6570\u7684\uff0c\u4e5f\u5373y>x\u3002\u56e0\u6b64\uff0c\u53ef\u5f97\u51fa\u4ee5\u4e0b\u7ed3\u8bba\uff1a<\/p>\n
    \n
  1. \u5728\u9ec4\u8272\u7ebf\u7684\u4e0a\u65b9\uff0c\u4f7f\u7528int32\u5b58\u50a8\u6548\u7387\u8f83\u9ad8\u3002\u5373\u6700\u5927\u5757\u5e8f\u53f7\u5927\u4e8e\u5dee\u5f02\u5757\u4e2a\u6570\u768432\u500d\u65f6\uff0c\u5e94\u5f53\u91c7\u7528int32\u6570\u7ec4\u5b58\u50a8\u3002<\/strong><\/li>\n
  2. \u5728\u9ec4\u8272\u7ebf\u7684\u4e0b\u65b9\uff0c\u7ea2\u8272\u7ebf\u7684\u4e0a\u65b9\uff0c\u4f7f\u7528bitmap\u5b58\u50a8\u7684\u6548\u7387\u8f83\u9ad8\u3002\u5373\u6700\u5927\u5757\u5e8f\u53f7\u5c0f\u4e8e\u5dee\u5f02\u5757\u4e2a\u6570\u768432\u500d\u65f6\uff0c\u5e94\u5f53\u91c7\u7528bitmap\u5b58\u50a8\u3002<\/strong><\/li>\n<\/ol>\n
    \u81f3\u4e8e\u4ec0\u4e48\u65f6\u5019\u6700\u5927\u5757\u5e8f\u53f7\u5927\u4e8e\u5dee\u5f02\u5757\u4e2a\u6570\u768432\u500d\uff0c\u90a3\u8981\u7ed3\u5408\u4e1a\u52a1\u7279\u70b9\u53ca\u6587\u4ef6\u7c7b\u578b\u6765\u5224\u65ad\u3002\u5f53\u6587\u4ef6\u66f4\u65b0\u8f83\u4e3a\u9891\u7e41\u65f6\uff0c\u66f4\u65b0\u5185\u5bb9\u53ef\u80fd<\/strong>\u8f83\u5c11\uff0c\u5dee\u5f02\u5757\u4e2a\u6570\u53ef\u80fd\u5c31\u5c11\uff0c\u8fd9\u65f6\u5e94\u5f53\u7528int\u6570\u7ec4\u3002\u5f53\u6587\u4ef6\u4e3a\u6587\u672c\u6587\u4ef6\u65f6\uff0c\u5c24\u5176\u662f\u65e5\u5fd7\u7c7b\u578b\u6587\u4ef6\uff0c\u90a3\u4e48\u5bf9\u6587\u4ef6\u7684\u64cd\u4f5c\u57fa\u672c\u4e3a\u8ffd\u52a0\u64cd\u4f5c\uff0c\u6539\u52a8\u7684\u662f\u6700\u540e\u4e00\u4e9b\u5757\uff0c\u6b64\u65f6\u6700\u5927\u5757\u5e8f\u53f7\u53ef\u80fd\u8f83\u5927\uff0c\u56e0\u6b64\u4e5f\u5e94\u8003\u8651\u7528int\u6570\u7ec4\u3002\u5f53\u6587\u4ef6\u4e3a\u4e8c\u8fdb\u5236\u6587\u4ef6\u65f6\uff0c\u53ef\u80fd\u4e3a\u53ef\u6267\u884c\u6587\u4ef6\uff0c\u5dee\u5f02\u90e8\u5206\u53ef\u80fd\u4f1a\u6bd4\u8f83\u591a\u5e76\u4e14\u8f83\u5747\u5300\u5206\u5e03\u5728\u6574\u4e2a\u6587\u4ef6\u4e2d\uff0c\u6b64\u65f6\u5c31\u5e94\u8be5\u8003\u8651\u4f7f\u7528bitmap\u3002\u603b\u4e4b\uff0c\u4e0d\u540c\u5b58\u50a8\u65b9\u6cd5\u8981\u6839\u636e\u5177\u4f53\u60c5\u5f62\u6765\u51b3\u5b9a\uff01<\/p>\n
    \n
    \u5728\u5199\u672c\u6587\u7684\u65f6\u5019\uff0c\u6df1\u6df1\u7684\u88ab\u7406\u79d1\u7684\u7f8e\u7ed9\u5438\u5f15\u4e86\u3002\u7f8e\u5728\u5b83\u662f\u81ea\u6d3d\u7684\uff1b\u7f8e\u5728\u5b83\u662f\u786e\u5b9a\u7684\uff1b\u7f8e\u5728\u5b83\u662f\u4e92\u901a\u7684\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
    \u6700\u8fd1\u5728\u505a\u4e00\u4e2a\u9879\u76ee\uff0c\u5176\u4e2d\u6709\u6587\u4ef6\u540c\u6b65\u7684\u9700\u6c42\uff0c\u5e76\u4e14\u6587\u4ef6\u4f1a\u7ecf\u5e38\u66f4\u65b0\u3002\u5982\u679c\u6bcf\u6b21\u90fd\u5c06\u6587\u4ef6\u5168\u91cf\u4e0a\u4f20\uff0c\u90a3\u4e48\u6bcf\u6b21\u90fd\u4e0a\u4f20\u672a\u6539\u52a8\u7684\u90e8\u5206\uff0c\u80af\u5b9a\u4f1a\u6d6a\u8d39\u5927\u91cf\u7684\u6d41\u91cf\u3002\u56e0\u6b64\u91c7\u7528\u5bf9\u6587\u4ef6\u5206\u5757\u7684\u65b9\u5f0f\uff0c\u6bcf\u6b21\u4e0a\u4f20\u524d\u6bd4\u8f83\u6587\u4ef6\u5757\u7684\u5dee\u5f02\uff0c\u4ec5\u5c06\u5dee\u5f02\u90e8\u5206\u4e0a\u4f20\u5373\u53ef\uff0c\u8fd9\u6837\u4f1a\u51cf\u5c11\u5f88\u5927\u4e00\u90e8\u5206\u6d41\u91cf\u3002\u6bd4\u8f83\u5b8c\u7684\u5dee\u5f02\u90e8\u5206\u5927\u81f4\u53ef\u7528\u4e0b\u9762\u7684\u7ed3\u6784\u6765\u8868\u793a\uff1a type Difference struct { File\u2026\u2026<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[13],"tags":[14],"_links":{"self":[{"href":"https:\/\/chenqinghe.com\/index.php?rest_route=\/wp\/v2\/posts\/50"}],"collection":[{"href":"https:\/\/chenqinghe.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/chenqinghe.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/chenqinghe.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/chenqinghe.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=50"}],"version-history":[{"count":0,"href":"https:\/\/chenqinghe.com\/index.php?rest_route=\/wp\/v2\/posts\/50\/revisions"}],"wp:attachment":[{"href":"https:\/\/chenqinghe.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=50"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/chenqinghe.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=50"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/chenqinghe.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=50"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}