{"id":1842,"date":"2012-04-06T14:51:00","date_gmt":"2012-04-06T06:51:00","guid":{"rendered":""},"modified":"2013-11-23T14:55:29","modified_gmt":"2013-11-23T06:55:29","slug":"%e8%b4%aa%e5%bf%83%e7%ae%97%e6%b3%95%e7%9a%84%e4%b8%80%e4%b8%aa%e5%87%ba%e4%ba%ba%e6%84%8f%e6%96%99%e7%9a%84%e5%ba%94%e7%94%a8","status":"publish","type":"post","link":"https:\/\/kyle.ai\/blog\/1842.html","title":{"rendered":"\u8d2a\u5fc3\u7b97\u6cd5\u7684\u4e00\u4e2a\u51fa\u4eba\u610f\u6599\u7684\u5e94\u7528"},"content":{"rendered":"<p><a href=\"http:\/\/domino.research.ibm.com\/Comm\/wwwr_ponder.nsf\/challenges\/November2009.html\">IBM Ponder This\u4e0a\u4e2a\u6708\u7684\u9898\u76ee<\/a>\u6bd4\u8f83\u6709\u8da3\uff1a\u6211\u5728\u5fc3\u91cc\u9762\u60f3\u4e00\u4e2a2\u5230166\u4e4b\u95f4\u7684\u6574\u6570\uff08\u5305\u62ec2\u548c166\uff09\uff0c\u4f60\u7684\u4efb\u52a1\u662f\u7528\u5c3d\u53ef\u80fd\u5c11\u7684\u662f\u975e\u95ee\u53e5\uff08\u6211\u53ea\u80fd\u56de\u7b54\u662f\u6216\u8005\u5426\uff09\u731c\u51fa\u8fd9\u4e2a\u6570\u96641\u4ee5\u5916\u7684\u6700\u5c0f\u7ea6\u6570\u662f\u591a\u5c11\u3002<\/p>\n<p>(1) \u5bfb\u627e\u4e00\u79cd\u7b56\u7565\u4f7f\u5f97\u5728\u6700\u574f\u60c5\u51b5\u4e0b\u731c\u5230\u7b54\u6848\u7684\u8be2\u95ee\u6b21\u6570\u6700\u5c11\u3002<br \/>\n(2) \u5bfb\u627e\u4e00\u79cd\u7b56\u7565\u4f7f\u5f97\u5728\u5e73\u5747\u60c5\u51b5\u4e0b\u731c\u5230\u7b54\u6848\u7684\u671f\u671b\u8be2\u95ee\u6b21\u6570\u6700\u5c11\u3002<\/p>\n<p><img decoding=\"async\" src=\".\/wp-content\/uploads\/hibaidu\/8c9550de8db1cb13897813b3dd54564e92584b3f.jpg\" alt=\"\" \/><\/p>\n<p>\u7b2c\u4e00\u4e2a\u95ee\u9898\u5f88\u5bb9\u6613\u56de\u7b54\u3002\u867d\u71362\u5230166\u4e4b\u95f4\u7684\u6574\u6570\u4e00\u5171\u6709165\u4e2a\uff0c\u4f46\u5b83\u4eec\u7684\u6700\u5c0f\u7ea6\u6570\uff08\u4ee5\u540e\u6211\u4eec\u8bf4\u7684\u201c\u6700\u5c0f\u7ea6\u6570\u201d\u90fd\u662f\u6307\u7684\u4e0d\u5305\u62ec1\u7684\u6700\u5c0f\u7ea6\u6570\uff09\u53ea\u670938\u79cd\u3002\u56e0\u6b64\uff0c\u4e8b\u5b9e\u4e0a\u4f60\u53ea\u9700\u8981\u7528\u4e8c\u5206\u6cd5\u572838\u4e2a\u53ef\u80fd\u7684\u7b54\u6848\u5f53\u4e2d\u627e\u51fa\u4e00\u4e2a\u5c31\u53ef\u4ee5\u4e86\u3002\u7531\u4e8e2^5=32\uff0c2^6=64\uff0c\u56e0\u6b64\u6700\u574f\u60c5\u51b5\u4e0b\u9700\u89816\u6b21\u8be2\u95ee\u624d\u80fd\u4fdd\u8bc1\u731c\u5230\u3002<br \/>\n\u771f\u6b63\u56f0\u96be\u7684\u662f\u540e\u9762\u4e00\u4e2a\u95ee\u9898\uff1a\u8981\u60f3\u8ba9\u5e73\u5747\u731c\u6d4b\u6b21\u6570\u5c3d\u53ef\u80fd\u5c11\uff0c\u6211\u4eec\u8be5\u4ece\u54ea\u91cc\u5165\u624b\u5462\uff1f<br \/>\n\u4e3a\u4e86\u65b9\u4fbf\u601d\u8003\uff0c\u4e0d\u59a8\u8ba9\u6211\u4eec\u628a\u8fd9\u4e2a\u95ee\u9898\u7b80\u5316\u4e00\u4e0b\u3002\u5047\u8bbe\u9898\u76ee\u6761\u4ef6\u4e2d\u6211\u5fc3\u91cc\u60f3\u7684\u6570\u5b57\u8303\u56f4\u662f2\u523010\u4e4b\u95f4\u7684\u81ea\u7136\u6570\uff0c\u7531\u4e8e\u8fd9\u4e9b\u6570\u7684\u6700\u5c0f\u7ea6\u6570\u5206\u522b\u662f2\u30013\u30012\u30015\u30012\u30017\u30012\u30013\u30012\uff0c\u53ea\u6709\u56db\u79cd\u60c5\u51b5\uff0c\u56e0\u6b64\u53ea\u9700\u8981\u4e24\u4e2a\u95ee\u9898\u5373\u53ef\u95ee\u51fa\u7b54\u6848\u2014\u2014\u6bd4\u65b9\u8bf4\uff0c\u7b2c\u4e00\u6b21\u95ee\u201c\u6700\u5c0f\u7ea6\u6570\u662f2\u62163\u5417\u201d\uff0c\u56de\u7b54\u201c\u662f\u201d\u5219\u518d\u95ee\u201c\u6700\u5c0f\u7ea6\u6570\u662f2\u5417\u201d\uff0c\u56de\u7b54\u201c\u5426\u201d\u5219\u95ee\u201c\u6700\u5c0f\u7ea6\u6570\u662f5\u5417\u201d\uff0c\u5373\u53ef\u4fdd\u8bc1\u77e5\u9053\u7b54\u6848\u3002\u82e5\u91c7\u7528\u8fd9\u79cd\u7b56\u7565\u7684\u8bdd\uff0c\u4e0d\u7ba1\u6211\u5fc3\u91cc\u60f3\u7684\u662f\u4ec0\u4e48\u6570\uff0c\u4f60\u603b\u662f\u9700\u8981\u6070\u597d\u4e24\u6b21\u731c\u6d4b\u624d\u80fd\u731c\u51fa\u7b54\u6848\u3002\u4f46\u4e8b\u5b9e\u4e0a\uff0c\u7531\u4e8e\u6700\u5c0f\u7ea6\u6570\u662f2\u7684\u53ef\u80fd\u6027\u8fdc\u8fdc\u5927\u4e8e\u5176\u5b83\u7684\u6570\uff0c\u56e0\u6b64\u51cf\u5c11\u6700\u5c0f\u7ea6\u6570\u662f2\u65f6\u7684\u731c\u6d4b\u6b21\u6570\uff0c\u589e\u52a0\u6700\u5c0f\u7ea6\u6570\u662f5\u548c7\u65f6\u7684\u731c\u6d4b\u6b21\u6570\uff0c\u867d\u7136\u6700\u574f\u60c5\u51b5\u4e0b\u9700\u8981\u7684\u731c\u6d4b\u6b21\u6570\u53d8\u591a\u4e86\uff0c\u4f46\u6211\u4eec\u6216\u8bb8\u80fd\u5f97\u5230\u66f4\u4f18\u7684\u5e73\u5747\u731c\u6d4b\u6b21\u6570\u3002\u6211\u4eec\u53ef\u4ee5\u8fd9\u6837\u505a\uff1a\u5148\u95ee\u201c\u6700\u5c0f\u7ea6\u6570\u662f2\u5417\u201d\u3002\u5982\u679c\u56de\u7b54\u662f\uff0c\u5219\u76f4\u63a5\u731c\u5230\uff0c\u56e0\u6b64\u5f53\u6211\u5fc3\u91cc\u60f3\u7684\u6570\u662f2\u30014\u30016\u30018\u300110\u4e2d\u7684\u4e00\u4e2a\u65f6\uff0c\u731c\u6d4b\u6b21\u6570\u4ec5\u4e3a\u4e00\u6b21\u3002\u5982\u679c\u56de\u7b54\u5426\uff0c\u5219\u95ee\u9898\u53d8\u4e3a\u4e86\u4e0b\u8ff0\u5b50\u95ee\u9898\uff1a\u5f53\u6211\u5fc3\u91cc\u6240\u60f3\u7684\u6570\u4e3a3\u30015\u30017\u30019\u65f6\uff0c\u5e73\u5747\u9700\u8981\u591a\u5c11\u6b21\u731c\u6d4b\u624d\u80fd\u731c\u51fa\u5b83\u7684\u6700\u5c0f\u7ea6\u6570\uff1f\u5bf9\u4e8e\u8fd9\u4e2a\u5b50\u95ee\u9898\uff0c\u6211\u4eec\u540c\u6837\u53d1\u73b0\uff0c\u7531\u4e8e\u6700\u5c0f\u7ea6\u6570\u4e3a3\u7684\u6982\u7387\u8f83\u5927\uff0c\u56e0\u6b64\u76f4\u63a5\u95ee\u201c\u6700\u5c0f\u7ea6\u6570\u662f3\u5417\u201d\u66f4\u597d\u3002\u91c7\u53d6\u8fd9\u79cd\u7b56\u7565\uff0c\u6211\u4eec\u53ef\u4ee5\u770b\u5230\uff1a\u5f53\u6211\u5fc3\u91cc\u60f3\u7684\u6570\u662f2\u30014\u30016\u30018\u300110\u4e2d\u7684\u4e00\u4e2a\u65f6\uff0c\u53ea\u9700\u8981\u4e00\u6b21\u731c\u6d4b\uff1b\u5f53\u6211\u5fc3\u91cc\u60f3\u7684\u6570\u662f3\u6216\u80059\u65f6\uff0c\u9700\u8981\u4e24\u6b21\u731c\u6d4b\uff1b\u5f53\u6211\u5fc3\u91cc\u60f3\u7684\u6570\u662f5\u6216\u80057\u65f6\uff0c\u4e00\u5171\u9700\u8981\u4e09\u6b21\u731c\u6d4b\u3002\u56e0\u6b64\uff0c\u91c7\u7528\u8fd9\u79cd\u7b56\u7565\u5e73\u5747\u9700\u8981(5*1 + 2*2 + 1*3 + 1*3)\/9 = 15\/9 \u2248 1.67\u6b21\u731c\u6d4b\u3002<\/p>\n<p><img decoding=\"async\" src=\".\/wp-content\/uploads\/hibaidu\/d35d02328744ebf876554b9fd9f9d72a6059a72c.jpg\" alt=\"\" \/><\/p>\n<p>\u89c9\u5f97\u4e0a\u9762\u7684\u56fe\u662f\u4e0d\u662f\u5f88\u719f\u6089\uff1f\u5f53\u4f60\u628a\u4e0a\u56fe\u4ece\u4e0b\u9762\u5012\u7740\u5f80\u56de\u63a8\u65f6\uff0c\u4f60\u4f1a\u53d1\u73b0\u8fd9\u662f\u4e00\u4e2a\u7ecf\u5178\u7684\u8d2a\u5fc3\u7b97\u6cd5\u95ee\u9898\u3002\u6211\u4eec\u628a\u62e5\u6709\u76f8\u540c\u6700\u5c0f\u7ea6\u6570\u7684\u6570\u653e\u8fdb\u4e00\u4e2a\u96c6\u5408\uff0c\u5219\u5f97\u5230\u7684\u56db\u4e2a\u96c6\u5408\u5206\u522b\u4e3a{2,4,6,8,10}\u3001{3,9}\u3001{5}\u3001{7}\u3002\u628a\u4e24\u4e2a\u96c6\u5408\u5408\u5e76\u6210\u4e00\u4e2a\u5927\u96c6\u5408\uff0c\u76f4\u89c2\u610f\u4e49\u5c31\u662f\u8fd9\u4e24\u4e2a\u96c6\u5408\u662f\u7531\u4e00\u4e2a\u5927\u96c6\u5408\u901a\u8fc7\u4e00\u6b21\u8be2\u95ee\u5212\u5206\u51fa\u6765\u7684\uff0c\u6b64\u65f6\u603b\u7684\u8be2\u95ee\u6b21\u6570\u5c31\u589e\u52a0\u4e86\u4e24\u4e2a\u96c6\u5408\u603b\u7684\u5143\u7d20\u4e2a\u6570\u90a3\u4e48\u591a\u3002\u501f\u7528\u7c7b\u4f3c\u4e8eHuffman\u7f16\u7801\u7684\u7b97\u6cd5\uff0c\u6211\u4eec\u7acb\u5373\u60f3\u5230\uff0c\u4e0d\u65ad\u5408\u5e76\u5f53\u524d\u5143\u7d20\u4e2a\u6570\u6700\u5c11\u7684\u96c6\u5408\uff0c\u5f97\u5230\u7684\u603b\u731c\u6d4b\u6b21\u6570\u5c31\u5e94\u8be5\u662f\u6700\u4f18\u7684\u3002\u5229\u7528Mathematica\u6c42\u89e3\u539f\u95ee\u9898\uff0c\u6211\u4eec\u53ef\u4ee5\u5f97\u51fa\uff0c\u5bf9\u4e8e2\u5230166\u7684\u60c5\u51b5\uff0c\u5e73\u5747494\/165=2.9939&#8230;\u22483\u6b21\u8be2\u95ee\u5c31\u80fd\u627e\u5230\u90a3\u4e2a\u6700\u5c0f\u7ea6\u6570\u3002<\/p>\n<p><img decoding=\"async\" src=\".\/wp-content\/uploads\/hibaidu\/b40e8945ebf81a4c3c16c369d72a6059252da62c.jpg\" alt=\"\" \/><\/p>\n<p>\u5f53\u4f60\u8054\u60f3\u5230\u4e86Huffman\u7f16\u7801\u65f6\uff0c\u4f60\u4f1a\u60ca\u5947\u5730\u53d1\u73b0\uff0c\u539f\u95ee\u9898\u5b8c\u5168\u7b49\u4ef7\u4e8eHuffman\u7f16\u7801\u95ee\u9898\u3002\u6ce8\u610f\u5230\u201c\u731c\u5230\u6700\u5c0f\u7ea6\u6570\u201d\u7684\u610f\u601d\u5c31\u662f\u8bf4\uff0c\u6bcf\u4e00\u4e2a\u53ef\u80fd\u7684\u7b54\u6848\u90fd\u5bf9\u5e94\u7740\u4e00\u4e2aYES\/NO\u5e8f\u5217\uff08\u4e5f\u5c31\u662f\u4e00\u4e2a01\u4e32\uff09\uff0c\u4e14\u4efb\u4e00\u5e8f\u5217\u90fd\u4e0d\u80fd\u6210\u4e3a\u53e6\u4e00\u4e2a\u5e8f\u5217\u7684\u524d\u7f00\u3002\u800c\u8fd9\u4e9b\u6700\u5c0f\u7ea6\u6570\u7684\u9891\u6b21\u662f\u4e0d\u540c\u7684\uff0c\u56e0\u6b64\u6211\u4eec\u9700\u8981\u7ed9\u6240\u6709\u53ef\u80fd\u7684\u6700\u5c0f\u7ea6\u6570\u8fdb\u884c\u4e8c\u8fdb\u5236\u7f16\u7801\uff0c\u4f7f\u5f97\u5b83\u4eec\u7684\u52a0\u6743\u957f\u5ea6\u6700\u77ed\u3002\u8fd9\u5c31\u662f\u4e00\u4e2a\u5178\u578b\u7684Huffman\u7f16\u7801\u95ee\u9898\u4e86\u3002<\/p>\n<p>\u539f\u6587\u94fe\u63a5\uff1a<a href=\"http:\/\/www.matrix67.com\/blog\/archives\/2605\">http:\/\/www.matrix67.com\/blog\/archives\/2605<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>IBM Ponder This\u4e0a\u4e2a\u6708\u7684\u9898\u76ee\u6bd4\u8f83\u6709\u8da3\uff1a\u6211\u5728\u5fc3\u91cc\u9762\u60f3\u4e00\u4e2a2\u5230166\u4e4b\u95f4\u7684\u6574\u6570\uff08\u5305\u62ec2\u548c166\uff09\uff0c\u4f60 [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[6],"tags":[],"class_list":["post-1842","post","type-post","status-publish","format-standard","hentry","category-code_related"],"_links":{"self":[{"href":"https:\/\/kyle.ai\/blog\/wp-json\/wp\/v2\/posts\/1842","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/kyle.ai\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/kyle.ai\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/kyle.ai\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/kyle.ai\/blog\/wp-json\/wp\/v2\/comments?post=1842"}],"version-history":[{"count":1,"href":"https:\/\/kyle.ai\/blog\/wp-json\/wp\/v2\/posts\/1842\/revisions"}],"predecessor-version":[{"id":5148,"href":"https:\/\/kyle.ai\/blog\/wp-json\/wp\/v2\/posts\/1842\/revisions\/5148"}],"wp:attachment":[{"href":"https:\/\/kyle.ai\/blog\/wp-json\/wp\/v2\/media?parent=1842"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kyle.ai\/blog\/wp-json\/wp\/v2\/categories?post=1842"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kyle.ai\/blog\/wp-json\/wp\/v2\/tags?post=1842"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}