{"id":9233,"date":"2016-05-29T12:26:07","date_gmt":"2016-05-29T16:26:07","guid":{"rendered":"http:\/\/cscircles.cemc.uwaterloo.ca\/?page_id=9233"},"modified":"2017-06-28T16:02:00","modified_gmt":"2017-06-28T20:02:00","slug":"zh-6d","status":"publish","type":"page","link":"https:\/\/cscircles.cemc.uwaterloo.ca\/dev\/zh-6d\/","title":{"rendered":"6D: \u8bbe\u8ba1\u3001\u6392\u9664\u9519\u8bef\u548c\u201c\u751c\u751c\u5708\u201d"},"content":{"rendered":"<!-- Please retain this notice and add more notes if you create a new version.<br \/>\nOriginal lesson author: David Pritchard, daveagp@gmail.com, http:\/\/cscircles.ca<br \/>\nLicense: http:\/\/creativecommons.org\/licenses\/by-nc-sa\/3.0\/-->\n<p>\u672c\u8bfe\u6709\u4e00\u4e9b\u5efa\u8bae\uff0c\u5173\u4e8e\u5982\u4f55\u4f7f\u8bbe\u8ba1\u548c\u8c03\u8bd5\u4f60\u7684\u7a0b\u5e8f\u53d8\u5f97\u66f4\u5bb9\u6613\u3002\u4f60\u505a\u7f16\u7a0b\u7684\u65f6\u95f4\u8d8a\u957f\uff0c\u5728\u907f\u514d\u548c\u4fee\u590d\u9519\u8bef\u4e0a\u5c31\u4f1a\u53d8\u5f97\u66f4\u597d\u3002\u4f46\u5728\u8fd9\u91cc\uff0c\u6211\u4eec\u4f1a\u5c1d\u8bd5\u7ed9\u4f60\u4e00\u4e9b\u975e\u5e38\u5e38\u7528\u53ca\u6709\u7528\u7684\u5efa\u8bae\u3002\u6211\u4eec\u4f1a\u8bb2\u89e3\u4ee5\u4e0b\u6280\u5de7\uff1a<\/p>\n<ul>\n<li>\u4e00\u6b21\u5efa\u7acb\u4e00\u4e2a\u90e8\u5206<\/li>\n<li>\u52a8\u624b\u6765\u89e3\u51b3\u4e00\u4e9b\u4f8b\u5b50<\/li>\n<li>\u5728\u4f60\u5f00\u59cb\u5199\u4ee3\u7801\u4e4b\u524d\u5148\u8ba1\u5212\u597d\u4f60\u7684\u4ee3\u7801<\/li>\n<li>\u7f16\u5199\u4ee3\u7801<\/li>\n<li>\u52a8\u624b\u6d4b\u8bd5\u4f60\u89e3\u51b3\u7684\u4f8b\u5b50<\/li>\n<li>\u6d4b\u8bd5\u989d\u5916\u7684\u4f8b\u5b50\u5305\u62ec \u201c\u8fb9\u754c\u201d\u548c\u4e00\u4e9b\u968f\u673a\u7684\u60c5\u51b5<\/li>\n<\/ul>\n<p>\u8fd9\u4e2a\u795e\u5947\u7684\u516c\u5f0f\u4e0d\u4f1a\u81ea\u52a8\u89e3\u51b3\u4e00\u5207\uff0c\u4f46\u5b83\u53ef\u4ee5\u8282\u7701\u4f60\u7684\u65f6\u95f4\uff0c\u5e76\u51cf\u5c11\u4f60\u5904\u7406\u540e\u7684\u95ee\u9898\u7684\u6570\u91cf\u3002<\/p>\n<p><table class='pywarn'><tr><td class='pywarnleft'><img src='https:\/\/cscircles.cemc.uwaterloo.ca\/dev\/wp-content\/plugins\/pybox\/files\/warning.png'\/><\/td><td class='pywarnright'><span> \u5f53\u4f60\u9047\u5230\u4e00\u4e2a\u95ee\u9898\uff0c\u4e00\u4e9b\u5e2e\u52a9\u8c03\u8bd5\u5b83\u7684\u7b56\u7565\u6709 <em>\u4f7f\u7528\u8bca\u65ad\u6253\u5370\u8bed\u53e5<\/em>\u00a0(\u6211\u4eec\u5c06\u5728\u4ee5\u540e\u7684\u8bfe\u4e2d\u4f7f\u7528), <em>\u4f7f\u7528\u53ef\u89c6\u5316\u5de5\u5177<\/em>, <em>\u4ed4\u7ec6\u9605\u8bfb\u4ee3\u7801<\/em>, \u4ee5\u53ca<em>\u7f16\u5199\u597d\u7684\u6d4b\u8bd5\u3002<\/em>\u00a0\u5982\u679c\u4f60 <a href=\"\/run-at-home\">\u5728\u5bb6\u4e2d\u8fd0\u884cPython<\/a>, \u4f60\u53ef\u4ee5\u4f7f\u7528\u65ad\u70b9\u548c\u5206\u6b65\u7684\u5de5\u5177\u6765\u66f4\u597d\u7684\u7406\u89e3\u9519\u8bef\u3002 <\/span><\/td><\/table><\/p>\n<p>\u4e00\u4e2a <strong><a href=\"http:\/\/en.wikipedia.org\/wiki\/Algorithm\">\u8fd0\u7b97\u6cd5\u5219<\/a><\/strong>\u00a0\u610f\u5473\u7740\u4e00\u7cfb\u5217\u7684\u6307\u4ee4\u3002 \u800c\u8ba1\u7b97\u673a\u7a0b\u5e8f\u9700\u8981\u4f7f\u7528\u7279\u5b9a\u7684\u8bed\u8a00\u7f16\u5199\uff0c\u5982Python\u548cJavaScript\u3002<strong>algorithm<\/strong>\u8fd9\u4e2a\u8bcd\u610f\u5473\u7740\u4e00\u6b65\u4e00\u6b65\u7684\u6307\u793a\uff0c\u53ef\u4ee5\u7528\u8bed\u8a00\u6216\u56fe\u8868\u793a\u3002\u4f8b\u5982\uff0c\u4e00\u4e2a\u751c\u751c\u5708\u98df\u8c31\u662f\u4e00\u4e2a\u7b97\u6cd5\uff0c\u5176\u4e2d\u201c\u91cf\u51fa3\u676f\u9762\u7c89\u201d\u4e00\u6b65\uff0c\u201c\u8ba9\u9762\u56e2\u53d1\u9175\u4e24\u5c0f\u65f6\u201d\u662f\u53e6\u4e00\u6b65\u3002\u6211\u4eec\u4f1a\u5728\u8fd9\u8282\u8bfe\u4e2d\u5f00\u53d1\u4e00\u4e2a\u7b80\u5355\u7684\u7b97\u6cd5\u3002 \u7136\u540e\u6211\u4eec\u4f1a\u843d\u5b9e\u8fd9\u610f\u5473\u7740\u5c06\u5b83\u8f6c\u6362\u6210\u4e00\u4e2a\u53ef\u4ee5\u8fd0\u884c\u7684\u8ba1\u7b97\u673a\u7a0b\u5e8f\u3002<\/p>\n<h2>\u95ee\u9898\uff1a\u751c\u751c\u5708\u8ba1\u7b97\u5668<\/h2>\n<p>Tim Horton's, \u4e00\u5bb6\u5728\u52a0\u62ff\u5927\u7684\u5496\u5561\u8fde\u9501\u5e97, \u9500\u552e <strong>timbits<\/strong>, \u4e00\u79cd\u597d\u5403\u7684\u751c\u751c\u5708\u7403:<\/p>\n<div style=\"width: 510px\" class=\"wp-caption aligncenter\"><a href=\"http:\/\/www.flickr.com\/photos\/looking_and_learning\/5358233785\/\"><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/farm6.staticflickr.com\/5203\/5358233785_13e36e1d76.jpg\" alt=\"\" width=\"500\" height=\"375\" \/><\/a><p class=\"wp-caption-text\">Photo: looking_and_learning, flickr<\/p><\/div>\n<p>\u4f60\u5fc5\u987b\u5728\u63a5\u4e0b\u6765\u7684\u51e0\u5468\u91cc\u7ec4\u7ec7\u51e0\u6b21\u805a\u4f1a\uff0c\u4f60\u4f1a\u5bf9\u6bcf\u4e00\u4e2a\u805a\u4f1a\u8ba2\u8d2d\u4e0d\u540c\u6570\u91cf\u7684timbits\u3002\u6240\u4ee5\u4e3a\u4e86\u4f60\u7684\u9884\u7b97\u8ba1\u5212\uff0c\u4f60\u60f3\u505a\u4e00\u4e2a\u7a0b\u5e8f\u6765\u8ba1\u7b97\u4efb\u610f\u6570\u91cftimbits\u7684\u4ef7\u683c\u3002\u5728\u4f60\u5f53\u5730\u7684\u5206\u5e97\uff0c\u90fd\u662f\u4e0b\u9762\u8fd9\u4e9b\u4ef7\u683c\uff1a<\/p>\n<table style=\"width: 350px; margin: auto;\">\n<tbody>\n<tr>\n<th>\u6570\u91cf<\/th>\n<th>\u4ef7\u683c<\/th>\n<\/tr>\n<tr>\n<td>1<\/td>\n<td>$0.20<\/td>\n<\/tr>\n<tr>\n<td>10 (\u5c0f\u76d2)<\/td>\n<td>$1.99<\/td>\n<\/tr>\n<tr>\n<td>20 (\u4e2d\u76d2)<\/td>\n<td>$3.39<\/td>\n<\/tr>\n<tr>\n<td>40 (\u5927\u76d2)<\/td>\n<td>$6.19<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>\u4e00\u6b21\u5efa\u7acb\u4e00\u4e2a\u90e8\u5206<\/h2>\n<p>\u6700\u7ec8\uff0c\u4f60\u60f3\u8981\u7f16\u5199\u4e00\u4e2a\u7a0b\u5e8f\uff0c\u5b83\u7684\u8f93\u5165\u662f <strong>\u5728\u805a\u4f1a\u4e0a\u7684\u4eba\u6570\u2014\u2014P<\/strong>\uff0c\u5b83\u7684\u8f93\u51fa\u662f<strong>\u603b\u5171\u7684\u542b\u7a0e\u652f\u51fa<\/strong>\u3002\u5728\u6700\u9ad8\u7684\u5c42\u9762\u4e0a\uff0c\u8fd9\u4e2a\u7a0b\u5e8f\u6709\u4e09\u4e2a\u90e8\u5206\uff1a<\/p>\n<ol>\n<li>\u8ba1\u7b97\u5f53\u6709<strong>P<\/strong>\u4e2a\u4eba\u65f6\uff0c\u4f60\u4e00\u5171\u9700\u8981\u4e70\u591a\u5c11\uff08<strong>T<\/strong>\uff09\u4e2a\u751c\u751c\u5708\u7403\uff1f<\/li>\n<li>\u8ba1\u7b97\u4e70<strong>T<\/strong>\u4e2a\u751c\u751c\u5708\u7403\u7684\u4ef7\u683c<\/li>\n<li>\u8ba1\u7b97\u7a0e\u548c\u603b\u5171\u7684\u82b1\u9500\u3002<\/li>\n<\/ol>\n<p>\u4e8b\u5b9e\u4e0a\uff0c\u4f60\u53ef\u4ee5\u4e00\u4e2a\u63a5\u4e00\u4e2a\u7684\u5b8c\u6210\u8fd9\u4e09\u4e2a\u90e8\u5206\u3002\u540c\u6837\uff0c\u6211\u4eec\u4e5f\u5efa\u8bae\u4f60\u5982\u6b64\u8fdb\u884c\u3002\u5728\u4f60\u6bcf\u8fdb\u5165\u4e0b\u4e00\u6b65\u9aa4\u4e4b\u524d\uff0c\u8bb0\u5f97\u6d4b\u8bd5\u548c\u4fee\u6539\u4f60\u5df2\u5b8c\u6210\u7684\u90e8\u5206\uff0c\u56e0\u4e3a<em>\u8d8a\u5927\u7684\u7a0b\u5e8f\uff0c\u8d8a\u96be\u53d1\u73b0\u548c\u89e3\u51b3\u6bcf\u4e2a\u9519\u8bef<\/em>\u3002\u5728\u7ec4\u5408\u6210\u4e00\u4e2a\u5b8c\u6574\u7684\u7a0b\u5e8f\u4e4b\u524d\uff0c\u4e09\u4e2a\u90e8\u5206\u5206\u5f00\u8fdb\u884c\u4f1a\u8ba9\u4f60\u66f4\u5bb9\u6613\u5f00\u53d1\u548c\u6d4b\u8bd5\u3002\u5bf9\u8fd9\u8282\u8bfe\u7684\u5176\u4f59\u90e8\u5206\uff0c\u6211\u4eec\u4f1a\u5c06\u91cd\u70b9\u653e\u5728\u6b65\u9aa42\uff1a<strong>\u8ba1\u7b97\u8d2d\u4e70T\u4e2atimbits\u7684\u4ef7\u683c\u3002<\/strong><\/p>\n<h2>\u52a8\u624b\u6765\u89e3\u51b3\u4e00\u4e9b\u4f8b\u5b50<\/h2>\n<p>\u4e3a\u4e86\u80fd\u591f\u544a\u8bc9\u7535\u8111\u505a\u67d0\u4ef6\u4e8b\uff0c\u4f60\u9996\u5148\u9700\u8981\u80fd\u591f\u81ea\u5df1\u5b8c\u6210\u5b83\u3002\u8ba9\u6211\u4eec\u901a\u8fc7\u4e00\u4e2a\u4f8b\u5b50\u6765\u7ec3\u4e60\u4e00\u4e0b\uff1a\u8d2d\u4e70 <strong>45<\/strong> \u4e2atimbits\u7684\u4ef7\u683c\u662f\u591a\u5c11? \u8ba9\u6211\u4eec\u770b\u4e0b\u8868\u683c\uff0c\u6211\u4eec\u53ef\u4ee5\u4e70\u5927\u76d2\u88c5\uff0840\u4e2a\uff09\uff0c\u9700\u8981$6.19\u3002\u8fd9\u8ba9\u6211\u4eec\u8fd8\u9700\u8981\u5355\u72ec\u4e70 <strong>45 \u2013 40 = 5<\/strong> \u4e2atimbits, \u5b83\u4eec\u9700\u8981\u989d\u5916\u7684 5 * $0.20 = $1.00\u3002\u603b\u4ef7\u4f1a\u662f $6.19 + $1.00 = $7.19.<\/p>\n<h2>\u5728\u4f60\u5f00\u59cb\u5199\u4ee3\u7801\u4e4b\u524d\u5148\u8ba1\u5212\u597d\u4f60\u7684\u4ee3\u7801<\/h2>\n<p>\u5982\u679c\u6211\u4eec\u60f3\u4e704\u4e2a\u6216456\u4e2a timbits\u800c\u4e0d\u662f45\u4e2a\u5462\uff1f\u603b\u7684\u6765\u8bf4\uff0c\u6211\u4eec\u5e94\u8be5\u4e70\u5c3d\u53ef\u80fd\u591a\u7684\u5927\u76d2\u88c5\uff0c\u7136\u540e\u518d\u6362\u6210\u4e2d\u76d2\u88c5\u6216\u5c0f\u76d2\u88c5\uff0c\u6700\u540e\u624d\u662f\u8d2d\u4e70\u5355\u72ec\u7684 timbits \u6765\u5f97\u5230\u6b63\u786e\u7684\u603b\u6570\u3002 <table class='pywarn'><tr><td class='pywarnleft'><img src='https:\/\/cscircles.cemc.uwaterloo.ca\/dev\/wp-content\/plugins\/pybox\/files\/warning.png'\/><\/td><td class='pywarnright'><span> \u8fd9\u79cd\u7b97\u6cd5\u771f\u7684\u662f\u6700\u4f18\u7684\u5417\uff1f\u662f\u7684! \u4f60\u53ef\u4ee5\u770b\u5230\uff0c\u4e70\u4e24\u4e2a\u4e2d\u76d2\u88c5(2*$3.39 = $6.78) \u662f\u4e00\u4e2a\u574f\u4e3b\u610f\uff0c\u56e0\u4e3a\u6211\u4eec\u53ef\u4ee5\u66f4\u4fbf\u5b9c\u7684\u5728\u4e00\u4e2a\u5927\u76d2\u88c5\u4e2d\u4e70\u5230 2*20=40 timbits\u3002\u540c\u6837\u7684\u6bd4\u8f83\u53ef\u4ee5\u5728\u5355\u4e2a\u4e0e\u5c0f\u76d2\u3001\u5c0f\u76d2\u4e0e\u4e2d\u76d2\u4e4b\u95f4\u8fdb\u884c\uff0c\u8fd9\u4e9b\u6bd4\u8f83\u53ef\u4ee5\u7528\u6765\u8bc1\u660e\u8fd9\u4e2a\u7b97\u6cd5\u662f\u6700\u4f18\u7684\u3002 <em>\u5982\u679c\u4ef7\u683c\u6216\u8005\u5927\u5c0f\u4e0d\u4e00\u6837\uff0c\u6211\u4eec\u53ef\u80fd\u9700\u8981\u66f4\u5c0f\u5fc3\u7684\u8003\u8651\u3002<\/em> <\/span><\/td><\/table><\/p>\n<p>\u6211\u4eec\u4e4b\u524d\u8bf4\u8fc7\uff0c\u4f60\u5e94\u8be5\u5728\u5f00\u59cb\u7f16\u5199\u4ee3\u7801\u524d\uff0c\u505a\u597d\u8ba1\u5212\u3002\u4f60\u53ef\u4ee5\uff1a<\/p>\n<ul>\n<li>\u7528\u4e2d\u6587\u5199\u51fa\u4e00\u4e2a\u7b80\u77ed\u7684\u7b97\u6cd5\u5206\u6b65\u63cf\u8ff0<\/li>\n<li>\u4f7f\u7528\u56fe\u8868\u6216\u8005\u6d41\u7a0b\u56fe\u6765\u663e\u793a\u6240\u6709\u7684\u6b65\u9aa4<\/li>\n<li>\u5f53\u4e0b\uff0c\u4f60\u5e94\u8be5\u628a\u91cd\u70b9\u653e\u5728\u6574\u4f53\u6846\u67b6\u4e0a\uff0c\u800c\u4e0d\u662f\u7ec6\u8282\u3002<\/li>\n<\/ul>\n<p>\u5728\u6211\u4eec\u7684\u4f8b\u5b50\u4e2d, \u6211\u4eec\u4f1a\u7ed9\u51fa\u4e00\u4e2a\u6587\u5b57\u63cf\u8ff0\u3002 <em>\u6211\u4eec\u6ca1\u6709\u7ed9\u4f60\u663e\u793a\u8fd9\u4e2a\u7279\u5b9a\u7a0b\u5e8f\u7684\u6d41\u7a0b\u56fe\uff0c\u56e0\u4e3a\u5b83\u53ea\u662f\u4ece\u6b65\u9aa41\u5230\u6b65\u9aa42\u4e4b\u95f4\u7684\u76f4\u7ebf\u6d41\u52a8\u3002\u5e26\u6709\u5faa\u73af\u7684\u7a0b\u5e8f\uff0c\u5c31\u50cf\u6211\u4eec\u968f\u540e\u4f1a\u770b\u5230\u7684\uff0c\u4f1a\u4ece\u6d41\u7a0b\u56fe\u4e2d\u83b7\u5f97\u66f4\u591a\u7684\u6548\u76ca\u3002<\/em><\/p>\n<div style=\"margin: 0px 100px 0px 100px; border: 1px solid blue;\">\n<p style=\"text-align: center;\"><strong>\u8ba1\u7b97\u51fa\u4efb\u610f\u6570\u91cf\u7684timbits\u4ef7\u683c\u7684\u7b97\u6cd5<\/strong><\/p>\n<ol>\n<li>\u83b7\u53d6timbits\u8f93\u5165\u7684\u6570\u91cf\u3002<\/li>\n<li>\u4ece\u96f6\u5f00\u59cb\uff0c\u8ddf\u8e2a\u603b\u4ef7\u683c\u3002<\/li>\n<li>\u5c3d\u53ef\u80fd\u7684\u8d2d\u4e70\u5927\u76d2\u88c5\u3002\n<ol>\n<li>\u8ba1\u7b97\u8fd8\u9700\u8981\u591a\u5c11timbits\u3002<\/li>\n<li>\u66f4\u65b0\u603b\u4ef7\u683c\u3002<\/li>\n<\/ol>\n<\/li>\n<li>\u5982\u679c\u53ef\u4ee5\uff0c\u8d2d\u4e70\u4e00\u4e2a\u4e2d\u76d2\u88c5\uff0c\u5e76\u91cd\u590d\u6b65\u9aa4A\u548cB\u3002<\/li>\n<li>\u5982\u679c\u53ef\u4ee5\uff0c\u8d2d\u4e70\u4e00\u4e2a\u5c0f\u76d2\u88c5\uff0c\u5e76\u91cd\u590d\u6b65\u9aa4A\u548cB\u3002<\/li>\n<li>\u8d2d\u4e70\u5355\u72ec\u7684timbits\u5e76\u91cd\u590d\u6b65\u9aa4B\u3002<\/li>\n<li>\u8f93\u51fa\u603b\u4ef7<\/li>\n<\/ol>\n<\/div>\n<p>\u6211\u4eec\u628a\u8fd9\u53eb\u505a <strong>\u4f2a\u4ee3\u7801<\/strong>,\u56e0\u4e3a\u5b83\u662f\u4e00\u4e2a\u4e32\u8054\u7684\u4e00\u6b65\u4e00\u6b65\u7684\u8bf4\u660e\uff0c\u4f46\u5374\u6ca1\u6709\u4f7f\u7528\u4efb\u4f55\u771f\u6b63\u7684\u7f16\u7a0b\u8bed\u8a00\u3002<\/p>\n<h2>\u7f16\u5199\u4ee3\u7801<\/h2>\n<p>\u91cd\u7533\u6211\u4eec\u7684\u7b2c\u4e00\u6761\u5efa\u8bae\uff0c <em>\u6bcf\u6b21\u53ea\u5efa\u7acb\u4e00\u4e2a\u90e8\u5206<\/em>, \u4f60\u4e5f\u53ef\u4ee5\u8003\u8651\u5728\u4ece1\u52307\u7684\u6bcf\u4e00\u6b65\u4e2d\u5199\u4e00\u4e2a\u5355\u72ec\u7684\u4ee3\u7801\u5757\u3002\u6b64\u5916\uff0c\u8fd9\u91cc\u8fd8\u6709\u4e00\u4ef6\u4e8b\uff0c\u6211\u4eec\u9700\u8981\u8003\u8651\u6240\u6709\u7684\u6b65\u9aa4\uff1a\u6211\u4eec\u8981\u7528\u4ec0\u4e48\u6837\u7684\u53d8\u91cf\uff1f\u4ed6\u4eec\u7684\u540d\u5b57\uff0c\u7c7b\u578b\u548c\u521d\u59cb\u503c\u662f\u4ec0\u4e48\uff1f<\/p>\n<p>\u8ba9\u6211\u4eec\u7528 <code>timbitsLeft<\/code> \u6765\u4ee3\u8868\u6211\u4eec\u8fd8\u9700\u8981\u8d2d\u4e70timbits\u7684\u6570\u91cf\uff0c\u540c\u65f6\u6211\u4eec\u7528<code>totalCost<\/code>\u6765\u4ee3\u8868\u76ee\u524d\u4e3a\u6b62\u7684\u603b\u4ef7\u3002\u6211\u4eec\u4e0d\u9700\u8981\u4e8b\u5148\u544a\u8bc9Python\u4ed6\u4eec\u7684\u7c7b\u578b\uff0c\u4f46\u6211\u4eec\u53ef\u4ee5\u5148\u8ba1\u5212\u597d\uff1a that <code>timbitsLeft<\/code> \u5c06\u4f1a\u662f <code>int<\/code>\u7c7b\u578b, \u540c\u65f6 <code>totalCost<\/code> \u4f1a\u662f <code>float<\/code>\u7c7b\u578b\u3002 (\u6240\u4ee5\u4e00\u5206\u94b1\u662f <code>0.01<\/code>)\u3002\u5728\u6bcf\u4e00\u6b65\u4e2d\uff0c\u6211\u4eec\u8fd8\u9700\u8981\u4e00\u4e9b\u989d\u5916\u7684\u4e34\u65f6\u53d8\u91cf\uff0c\u5b83\u4eec\u53ea\u6709\u5728\u6211\u4eec\u9700\u8981\u65f6\u624d\u4f1a\u4f7f\u7528\u5230\u3002<\/p>\n<p>\u7b2c\u4e00\u6b65\u548c\u7b2c\u4e8c\u90e8\u53ef\u4ee5\u5404\u7528\u4e00\u884c\u4ee3\u7801\u6765\u5b8c\u6210\uff1a<\/p>\n<pre>timbitsLeft = int(input()) # \u6b65\u9aa41: \u83b7\u53d6\u8f93\u5165\r\ntotalCost = 0              # \u6b65\u9aa42: \u521d\u59cb\u5316\u603b\u4ef7\u683c<\/pre>\u5728\u6b65\u9aa43\u4e2d, \u6211\u4eec\u9700\u8981\u8ba1\u7b97\u6700\u591a\u53ef\u4ee5\u4e70\u591a\u5c11\u4e2a\u5927\u76d2\u88c5\u3002\u6211\u4eec\u600e\u6837\u624d\u80fd\u8ba1\u7b97\u5b83\u5462\uff1f\u56e0\u4e3a\u6bcf\u4e00\u4e2a\u5927\u76d2\u88c5\u670940\u4e2atimbits\uff0c\u6570\u5b57<code>bigBoxes<\/code>\u00a0\u5e94\u8be5\u662f <code>timbitsLeft<\/code> \u9664\u4ee5 <code>40<\/code>\u7684\u6574\u6570\u5546\u3002 \u6301\u7eed\u8bb0\u5f55\u8fd9\u4e9b\u8fd0\u7b97\u6210\u5206\uff0c\u4f7f\u6211\u4eec\u6709\u4e86\u4e0b\u9762\u8fd9\u6bb5\u4ee3\u7801\uff1a<\/p>\n<pre># \u6b65\u9aa43: \u5c3d\u53ef\u80fd\u7684\u8d2d\u4e70\u5927\u76d2\u88c5\r\nbigBoxes = timbitsLeft \/ 40\r\ntotalCost = totalCost + bigBoxes * 6.19    # \u66f4\u65b0\u603b\u4ef7\r\ntimbitsLeft = timbitsLeft - 40 * bigBoxes  # \u8ba1\u7b97\u5269\u4f59\u8fd8\u9700\u8981\u7684timbits\u6570\u91cf<\/pre>\u4e8b\u5b9e\u4e0a\uff0c\u6211\u4eec\u5728\u8fd9\u5df2\u7ecf\u72af\u4e86\u4e00\u4e2a\u9519\u8bef\u3002 \u6355\u83b7\u9519\u8bef\u7684\u6700\u597d\u65b9\u6cd5\u662f\u5c3d\u65e9\u6d4b\u8bd5\u4f60\u7684\u4ee3\u7801\uff0c\u5e76\u7ecf\u5e38\u6d4b\u8bd5\u4f60\u7684\u4ee3\u7801\uff01\u8ba9\u6211\u4eec\u4e50\u89c2\u5730\u8bf4\uff0c\u6211\u4eec\u73b0\u5728\u5df2\u7ecf\u6d4b\u8bd5\u4e86\u90e8\u5206\u4ee3\u7801\u3002\u6211\u4eec\u53ea\u9700\u8981\u6dfb\u52a0\u4e00\u4e9b\u6253\u5370\u8bed\u53e5\u6765\u89c2\u5bdf\u5b83\u76ee\u524d\u7684\u884c\u4e3a\u3002(<em>\u9664\u4e86\u4f7f\u7528\u6253\u5370\u8bed\u53e5\uff0c\u4f60\u4e5f\u53ef\u4ee5\u4f7f\u7528\u6211\u4eec\u7684\u53ef\u89c6\u5316\u5de5\u5177\u6765\u68c0\u67e5\u6bcf\u4e00\u6b65\u3002<\/em>)<\/p>\n<p><form class=\"pbform\" action=\"#\" id=\"pbform0\" method=\"POST\">\n<div class='pybox modeNeutral  facultative' id='pybox0'>\n<div class=\"heading\"><span class=\"title\">Example<\/span><\/div>\u4f7f\u7528\u8f93\u5165 <strong>45<\/strong> \u6765\u6d4b\u8bd5\u76ee\u524d\u7684\u7a0b\u5e8f\uff0c\u5e76\u4f7f\u7528<code>print<\/code> \u8bed\u53e5\u6765\u5e2e\u52a9\u4f60\u6392\u9664\u6545\u969c\u3002<div class='pyboxTextwrap pyboxCodewrap RO '  style='height: 370px;'><textarea wrap='off' name='usercode0' id='usercode0'  cols=10 rows=14 readonly='readonly'  style = 'height : 370px;'  class='pyboxCode RO'>\ntimbitsLeft = int(input()) # \u6b65\u9aa41: \u5f97\u5230\u8f93\u5165\n\nprint('the input is', timbitsLeft)\n\ntotalCost = 0              # \u6b65\u9aa42: \u8bbe\u5b9a\u603b\u8ba1\n\n# \u6b65\u9aa43: \u5c3d\u53ef\u80fd\u591a\u5730\u8d2d\u4e70\u5927\u76d2\u5b50\nbigBoxes = timbitsLeft \/ 40\ntotalCost = totalCost + bigBoxes * 6.19    # \u66f4\u65b0\u603b\u8ba1\ntimbitsLeft = timbitsLeft - 40 * bigBoxes  # \u4ecd\u9700\u8ba1\u7b97timbits\n\nprint('bigBoxes equals', bigBoxes)\nprint('totalCost equals', totalCost)\nprint('now timbitsLeft equals', timbitsLeft)<\/textarea><\/div>\n<div id='pbhistory0' class='flexcontain' style='display:none;'><\/div>\n<div class='pyboxbuttons'><table><tr>\n<td><input type='submit' name='submit' id='submit0' value=' '\/><\/td>\n<td><input type='button' name='consolecopy' value=\"Open in console\" onclick=\"pbConsoleCopy(0)\" ><\/td>\n<td><input type='button' name='visualize' value=\"Visualize\" onclick=\"pbVisualize(0,'N')\" ><\/td>\n<\/tr><\/table><\/div>\n<input type=\"hidden\" name=\"lang\" value=\"\"\/><input type=\"hidden\" id=\"inputInUse0\" name=\"inputInUse\" value=\"Y\"\/>\n<input type=\"hidden\" name=\"pyId\" value=\"0\"\/>\n<input type=\"hidden\" name=\"hash\" value=\"e5f6f52c424fd54b7eeba22808b38eee\"\/>\n<div id='pbresults0' class='pbresults'><\/div>\n<\/div>\n<\/form>\n<script type='text\/javascript'>document.getElementById(\"submit0\").value = \"Run program\";document.getElementById(\"inputInUse0\").value = \"N\";<\/script>\n<\/p>\n<p>\u8fd9\u5e76\u4e0d\u662f\u6211\u4eec\u60f3\u8981\u7684\u7ed3\u679c\uff01\u95ee\u9898\u5728\u54ea\u91cc\uff1f <strong>\u54ea\u4e00\u884c\u4ee3\u7801\u4f7f\u6211\u4eec\u7684\u7a0b\u5e8f\u53d1\u751f\u4e86\u6539\u53d8\uff1f<\/strong>\u00a0\u8bd5\u7740\u5728\u6253\u5f00\u4e0b\u4e00\u6bb5\u4e4b\u524d\u627e\u5230\u5b83\u3002\u8bb0\u7740\uff0c\u6211\u4eec\u5728\u524d\u9762\u81ea\u5df1\u52a8\u624b\u5b8c\u6210\u4e86\u8fd9\u4e2a\u95ee\u9898\u3002<\/p>\n<div class='collapseContain hiding'>\n<div class='collapseHead'><span class='icon'><\/span>\n\u70b9\u51fb\u6765\u67e5\u9605\u89e3\u91ca\n<\/div>\n<div class='collapseBody'>\u7f6a\u9b41\u7978\u9996\u662f\u8fd9\u884c\u4ee3\u7801 <code>bigBoxes = timbitsLeft \/ 40<\/code>, \u56e0\u4e3a <code>bigBoxes<\/code> \u51fa\u6765\u7684\u7ed3\u679c\u662f <code>1.125<\/code>\uff0c\u800c\u6211\u4eec\u60f3\u8981\u5b83\u7b49\u4e8e <code>1<\/code>\u3002\u4f60\u4e0d\u53ef\u80fd\u4e70\u4e00\u76d2\u7684\u4e00\u5c0f\u90e8\u5206\u3002\u4e00\u4e2a\u53ef\u884c\u7684\u89e3\u51b3\u65b9\u6cd5\uff08\u4f60\u4f1a\u5728\u8bfe\u7a0b7A\u4e2d\u770b\u5230\uff09\uff0c\u5c31\u662f\u5728\u6574\u6570\u9664\u6cd5\u4e2d\u4f7f\u7528 <code>\/\/<\/code> \u6765\u66ff\u4ee3\u5341\u8fdb\u5236\u9664\u6cd5\u7684<code>\/<\/code>\u3002\u53e6\u4e00\u4e2a\u57fa\u4e8e\u6211\u4eec\u5728\u7b2c4\u8bfe\u4e2d\u770b\u5230\u7684\u65b9\u6cd5\u662f\u8f6c\u6362 <code>timbitsLeft \/ 40<\/code> \u4e3a\u4e00\u4e2a <code>int<\/code>\uff0c\u8fd9\u5c06\u5220\u9664\u8fd9\u4e2a\u6570\u7684\u5c0f\u6570\u90e8\u5206\u3002\u6211\u4eec\u5c06\u4f7f\u7528\u8fd9\u79cd\u65b9\u6cd5\uff1a\u4e8e\u662f\u8fd9\u884c\u4ee3\u7801\u53d8\u6210\u4e86\u00a0<code>bigBoxes = int(timbitsLeft \/ 40)<\/code>\u3002<br \/>\n<\/div><\/div>\n<p>\u6b65\u9aa44\u548c5\u4e0e\u6b65\u9aa43\u5341\u5206\u76f8\u4f3c\u3002\u53e6\u5916\uff0c\u56e0\u4e3a\u4f60\u4f1a\u4e70\u6700\u591a\u4e00\u4e2a\u4e2d\u578b\u76d2\u5b50\u6216\u4e00\u4e2a\u5c0f\u76d2\u5b50,\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528\u4e00\u4e2a<code>if<\/code> \u8bed\u53e5:<\/p>\n<pre>if timbitsLeft &gt;= 20: # \u6b65\u9aa44,\u6211\u4eec\u80fd\u4e70\u4e00\u4e2a\u4e2d\u76d2\u88c5\u4e48\uff1f\r\n\u00a0 totalCost = totalCost + 3.39\r\n\u00a0 timbitsLeft = timbitsLeft - 20\r\nif timbitsLeft &gt;= 10: # \u6b65\u9aa45, \u6211\u4eec\u53ef\u4ee5\u4e70\u4e00\u4e2a\u5c0f\u76d2\u88c5\u4e48\uff1f\r\n\u00a0 totalCost = totalCost + 1.99\r\n\u00a0 timbitsLeft = timbitsLeft - 20<\/pre>\u6700\u540e\uff0c\u6211\u4eec\u9700\u8981\u4ed820\u5206\u7ed9\u6bcf\u4e2a\u989d\u5916\u5355\u72ec\u8d2d\u4e70\u7684timbits\u5e76\u8f93\u51fa\u6700\u7ec8\u7b54\u6848\u3002<\/p>\n<pre>totalCost = totalCost + timbitsLeft * 20 # \u6b65\u9aa46\r\nprint(totalCost)                         # \u6b65\u9aa47<\/pre>\n<h2>\u6d4b\u8bd5\u4f60\u5b8c\u6210\u7684\u4f8b\u5b50<\/h2>\n<p>\u8fd9\u91cc\u662f\u6574\u4f53\u7684\u7a0b\u5e8f\u3002\u6211\u4eec\u4f1a\u505a\u7684\u7b2c\u4e00\u4ef6\u4e8b\u662f\u6d4b\u8bd5\u5f53\u8f93\u5165\u4e3a<strong>45<\/strong>\u00a0\u65f6\uff0c\u5b83\u662f\u5426\u6b63\u786e\u8fd0\u884c\u3002<\/p>\n<p><form class=\"pbform\" action=\"#\" id=\"pbform1\" method=\"POST\">\n<div class='pybox modeNeutral  facultative' id='pybox1'>\n<div class=\"heading\"><span class=\"title\">Example<\/span><\/div>45\u4e2atimbits\u7684\u4ef7\u683c\u662f\u591a\u5c11?<div class='pyboxTextwrap pyboxCodewrap RO '  style='height: 448px;'><textarea wrap='off' name='usercode1' id='usercode1'  cols=10 rows=17 readonly='readonly'  style = 'height : 448px;'  class='pyboxCode RO'>\ntimbitsLeft = int(input()) # \u6b65\u9aa41: \u5f97\u5230\u8f93\u5165\ntotalCost = 0              # \u6b65\u9aa42: \u8bbe\u5b9a\u603b\u8ba1\n\n# \u6b65\u9aa43: \u5c3d\u53ef\u80fd\u5730\u591a\u4e70\u5927\u76d2\u5b50\nbigBoxes = int(timbitsLeft \/ 40)\ntotalCost = totalCost + bigBoxes * 6.19    # \u66f4\u65b0\u603b\u8ba1\ntimbitsLeft = timbitsLeft - 40 * bigBoxes  # \u4ecd\u9700\u8ba1\u7b97timbits\n\nif timbitsLeft >= 20:                # \u6b65\u9aa44, \u6211\u4eec\u80fd\u8d2d\u4e70\u4e00\u4e2a\u4e2d\u76d2\u5b50\u4e48?\n    totalCost = totalCost + 3.39\n    timbitsLeft = timbitsLeft - 20\nif timbitsLeft >= 10:                # \u6b65\u9aa45, \u6211\u4eec\u80fd\u8d2d\u4e70\u4e00\u4e2a\u5c0f\u76d2\u5b50\u4e48?\n    totalCost = totalCost + 1.99\n    timbitsLeft = timbitsLeft - 20\n\ntotalCost = totalCost + timbitsLeft * 20 # \u6b65\u9aa46\nprint(totalCost)                         # \u6b65\u9aa47<\/textarea><\/div>\n<div id='pbhistory1' class='flexcontain' style='display:none;'><\/div>\n<div name=\"pyinput\" id=\"pyinput1\">You may enter input for the program in the box below.<div class=\"pyboxTextwrap resizy\" style=\"height: 102px;\" ><textarea wrap=\"off\" name=\"userinput\" class=\"pyboxInput\" cols=10 rows=4><\/textarea><\/div><\/div>\n<div class='pyboxbuttons'><table><tr>\n<td><input type='submit' name='submit' id='submit1' value=' '\/><\/td>\n<td><input type='button' name='switch' id=\"switch1\" value=\"Input Switch\" onclick=\"pbInputSwitch(1,'N')\" ><\/td>\n<td><input type='button' name='consolecopy' value=\"Open in console\" onclick=\"pbConsoleCopy(1)\" ><\/td>\n<td><input type='button' name='visualize' value=\"Visualize\" onclick=\"pbVisualize(1,'N')\" ><\/td>\n<\/tr><\/table><\/div>\n<input type=\"hidden\" name=\"lang\" value=\"\"\/><input type=\"hidden\" id=\"inputInUse1\" name=\"inputInUse\" value=\"Y\"\/>\n<input type=\"hidden\" name=\"pyId\" value=\"1\"\/>\n<input type=\"hidden\" name=\"hash\" value=\"cfc40c056815b498c7d58858a7007c7c\"\/>\n<div id='pbresults1' class='pbresults'><\/div>\n<\/div>\n<\/form>\n<script type='text\/javascript'>pbInputSwitch(1,\"N\");<\/script>\n<\/p>\n<p>\u8fd9\u91cc\u80af\u5b9a\u5b58\u5728\u4e00\u4e2a\u9519\u8bef\uff0c\u56e0\u4e3a\u8fd945\u4e2atimbits\u7adf\u7136\u9700\u8981100\u591a\u5143\uff01\u4f60\u7684\u6700\u540e\u4e00\u4efd\u5de5\u4f5c\u5c31\u662f\u627e\u5230\u5e76\u6d88\u9664\u8fd9\u4e2a\u9519\u8bef\uff0c\u5e76\u4fee\u590d\u9690\u85cf\u5728\u4ee3\u7801\u4e2d\u7684\u53e6\u4e00\u4e2a\u9519\u8bef\u3002\u5b83\u5c06\u5728\u4e0b\u4e00\u4e2a\u90e8\u5206\u4e2d\u88ab\u6d4b\u8bd5\u3002<\/p>\n<p><table class='pywarn'><tr><td class='pywarnleft'><img src='https:\/\/cscircles.cemc.uwaterloo.ca\/dev\/wp-content\/plugins\/pybox\/files\/warning.png'\/><\/td><td class='pywarnright'><span> \u8fd9\u91cc\u6709\u4e00\u4e2a\u5173\u4e8eTim Horton\u7684\u4ef7\u683c\u7684\u5c0f\u8da3\u4e8b\uff1a\u6709\u53ef\u80fd\u4f60\u4e70 <strong>T+1<\/strong>\u4e2a timbits\u4f1a\u6bd4\u4e70 <strong>T<\/strong> \u4e2atimbits\u66f4\u4fbf\u5b9c\u3002\u4f8b\u5982\uff0c\u8d2d\u4e7019\u4e2atimbits\u9700\u8981$3.79, \u4f46\u8d2d\u4e7020\u4e2atimbits\u5374\u53ea\u9700\u8981$3.39\u3002\u4e0d\u7ba1\u600e\u6837, \u6211\u4eec\u76ee\u524d\u53ea\u5173\u5fc3\u600e\u6837\u6700\u4fbf\u5b9c\u7684\u8d2d\u4e70<em>\u6b63\u597d<\/em> <strong>T<\/strong>\u4e2atimbits, \u56e0\u6b64\u4e4b\u524d\u7684\u7b97\u6cd5\u662f\u5b8c\u5168\u6b63\u786e\u7684\u3002\u6240\u4ee5\u4f60\u7684\u7a0b\u5e8f\u5e94\u8be5\u8f93\u51fa<code>3.79<\/code> \u5f53\u8f93\u5165\u662f <code>19<\/code>\u65f6\u3002 <\/span><\/td><\/table><\/p>\n<h2>\u6d4b\u8bd5\u989d\u5916\u7684\u4f8b\u5b50<\/h2>\n<p>\u5728\u8ba1\u7b97\u673a\u79d1\u5b66\u5708\u91cc\uff0c\u6211\u4eec\u5c1d\u8bd5\u667a\u80fd\u81ea\u52a8\u5316\u7684\u6d4b\u8bd5\u4f60\u7684\u4ee3\u7801\uff0c\u4ee5\u786e\u4fdd\u4f60\u5df2\u7ecf\u6b63\u786e\u5730\u89e3\u51b3\u4e86\u8fd9\u4e2a\u95ee\u9898\u3002\u4f46\u5728\u4e00\u4e2a\u771f\u6b63\u7684\u7f16\u7a0b\u73af\u5883\u4e2d\uff0c\u5e94\u8be5\u7531\u4f60\u6765\u5f7b\u5e95\u6d4b\u8bd5\u81ea\u5df1\u7684\u4ee3\u7801\u3002\u8fd9\u91cc\u6709\u4e00\u4e9b\u6709\u7528\u7684\u6d4b\u8bd5\u6307\u5357\u3002<\/p>\n<ul>\n<li>\u4f60\u53ef\u4ee5\u68c0\u67e5\u4f60\u7a0b\u5e8f\u7684 <em>\u6bcf\u4e00\u884c\u4ee3\u7801<\/em>\u00a0\u6765\u786e\u8ba4\u8fd9\u4e2a\u7a0b\u5e8f\u662f\u6b63\u5e38\u5de5\u4f5c\u7684\u3002\u5728timbit \u8fd9\u4e2a\u95ee\u9898\u4e2d\uff0c\u4f7f\u7528\u8f93\u5165 <code>10<\/code> \u53ef\u4ee5\u5e2e\u52a9\u68c0\u67e5\u6211\u4eec\u662f\u5426\u6b63\u786e\u7684\u5904\u7406\u4e86\u5c0f\u76d2\u7684\u60c5\u51b5\u3002\u540c\u6837\u7684\uff0c\u8f93\u5165 <code>20<\/code> \u548c <code>40<\/code> \u53ef\u4ee5\u5e2e\u6211\u4eec\u68c0\u67e5\u4e2d\u76d2\u548c\u5927\u76d2\u7684\u60c5\u51b5\u3002\u6700\u540e\uff0c\u4f60\u5e94\u8be5\u68c0\u67e5\u5355\u4e2atimbit\u7684\u60c5\u51b5(\u4f8b\u5982\u4f7f\u7528\u8f93\u5165<code>1<\/code>)\u3002\n<ul>\n<li>\u8fd9\u4e2a\u53ef\u4ee5\u5e2e\u52a9\u6211\u4eec\u68c0\u67e5\u50cf$3.39\u548c$1.99\u8fd9\u6837\u7684\u503c\u662f\u5426\u952e\u5165\u6b63\u786e\u3002<\/li>\n<\/ul>\n<\/li>\n<li>\u8bb0\u5f97\u68c0\u67e5\u4f1a\u8d85\u51fa\u4f60\u7a0b\u5e8f\u9650\u5236\u7684 \"\u8fb9\u754c\u7ebf\" \u60c5\u51b5\u3002\u4f8b\u5982\uff0c\u8fd9\u4e2a\u7a0b\u5e8f\u53ef\u80fd\u7684\u6700\u5c0f\u8f93\u5165\u662f <code>0<\/code>, \u56e0\u4e3a\u4f60\u4e0d\u53ef\u80fd\u4e70\u8d1f\u6570\u4e2atimbits\u3002\u6211\u4eec\u7684\u7a0b\u5e8f\u5e76\u6ca1\u6709\u6700\u5927\u8f93\u5165\u503c\uff0c\u4f46\u4f60\u53ef\u4ee5\u5c1d\u8bd5\u4e00\u4e9b\u503c\uff0c\u4f8b\u5982<code>39<\/code> \u548c <code>41<\/code>\uff0c\u4ed6\u4eec\u90fd\u975e\u5e38\u63a5\u8fd1\u521a\u591f\u4e70\u4e00\u5927\u76d2\u7684\u754c\u9650\u3002\n<ul>\n<li>\u8fd9\u4e2a\u53ef\u4ee5\u5e2e\u52a9\u68c0\u67e5\u4f60\u662f\u5426\u4e0d\u5c0f\u5fc3\u6253\u5165\u4e86<code>&gt;<\/code> \u5f53\u4f60\u771f\u6b63\u9700\u8981\u6253\u5165\u7684\u662f <code>&gt;=<\/code> \u3002<\/li>\n<\/ul>\n<\/li>\n<li>\u5728\u4e00\u4e9b\u60c5\u51b5\u4e0b\u4f60\u53ef\u4ee5\u81ea\u52a8\u68c0\u67e5<em>\u6bcf\u4e00\u4e2a<\/em>\u00a0\u8f93\u5165\uff0c\u6216\u8005\u68c0\u67e5\u5f88\u591a<em>\u968f\u673a\u7684<\/em>\u8f93\u5165\u6765\u770b\u4f60\u7684\u7a0b\u5e8f\u662f\u5426\u6b63\u5e38\u5de5\u4f5c\u3002\u5728\u6b64\u7f51\u7ad9\u7684\u5185\u90e8\u6d4b\u8bd5\u4e2d\uff0c\u6211\u4eec\u4f7f\u7528\u4e86\u5927\u91cf\u7684\u968f\u673a\u8f93\u5165\u3002\u4f7f\u7528 <code>import random<\/code> \u5728\u4f60\u7a0b\u5e8f\u7684\u5f00\u5934\uff0c\u63a5\u7740\u4f8b\u5982\u4f60\u4f7f\u7528\u4ee3\u7801<code>random.randint(10, 100)<\/code>\uff0c\u5b83\u5c31\u4f1a\u4ea7\u751f\u4e00\u4e2a\u5728<code>10<\/code>\u81f3<code>100<\/code>\u4e4b\u95f4\u7684\u968f\u673a\u6574\u6570\u3002<\/li>\n<\/ul>\n<p>\u4f60\u80fd\u591f\u627e\u5230\u6240\u6709\u7684\u9519\u8bef\u5e76\u901a\u8fc7\u6240\u6709\u7684\u6d4b\u8bd5\u5417\uff1f \u5c1d\u8bd5\u4e00\u4e0b\u5427\uff01<\/p>\n<p><table class='pywarn'><tr><td class='pywarnleft'><img src='https:\/\/cscircles.cemc.uwaterloo.ca\/dev\/wp-content\/plugins\/pybox\/files\/warning.png'\/><\/td><td class='pywarnright'><span> \u5728Python\u4e2d\uff0c\u4e00\u4e9b\u8ba1\u7b97\u4f1a\u4ea7\u751f\u4e00\u4e9b\u5c0f\u7684\u9519\u8bef\uff1a  <form class=\"pbform\" action=\"#\" id=\"pbform2\" method=\"POST\">\n<div class='pybox modeNeutral  facultative' id='pybox2'>\n<div class=\"heading\"><span class='type'>Example: <\/span><span class='title'>Rounding Error<\/span><\/div> <div class='pyboxTextwrap pyboxCodewrap RO '  style='height: 32px;'><textarea wrap='off' name='usercode2' id='usercode2'  cols=10 rows=1 readonly='readonly'  style = 'height : 32px;'  class='pyboxCode RO'>\nprint(35 * 0.01)<\/textarea><\/div>\n<div id='pbhistory2' class='flexcontain' style='display:none;'><\/div>\n<div class='pyboxbuttons'><table><tr>\n<td><input type='submit' name='submit' id='submit2' value=' '\/><\/td>\n<td><input type='button' name='consolecopy' value=\"Open in console\" onclick=\"pbConsoleCopy(2)\" ><\/td>\n<td><input type='button' name='visualize' value=\"Visualize\" onclick=\"pbVisualize(2,'N')\" ><\/td>\n<\/tr><\/table><\/div>\n<input type=\"hidden\" name=\"lang\" value=\"\"\/><input type=\"hidden\" id=\"inputInUse2\" name=\"inputInUse\" value=\"Y\"\/>\n<input type=\"hidden\" name=\"pyId\" value=\"2\"\/>\n<input type=\"hidden\" name=\"hash\" value=\"ac94b6bc7e0be958f20466b69dca002c\"\/>\n<div id='pbresults2' class='pbresults'><\/div>\n<\/div>\n<\/form>\n<script type='text\/javascript'>document.getElementById(\"submit2\").value = \"Run program\";document.getElementById(\"inputInUse2\").value = \"N\";<\/script>\n  \u4ee4\u4eba\u60ca\u8bb6\u7684\u662f\uff0c\u4e0a\u9762\u8fd9\u884c\u4ee3\u7801\u5e76\u4e0d\u4f1a\u7ed9\u6211\u4eec\u6574\u597d<code>0.35<\/code>\uff01\u8fd9\u662f\u7531\u4e8ePython\u5b58\u50a8\u4fe1\u606f\u7684\u65b9\u5f0f\u9020\u6210\u7684\u3002\u4f60\u4e0d\u7528\u62c5\u5fc3\u8fd9\u4e9b\u6781\u5c0f\u7684\u9519\u8bef\uff1a\u6253\u5206\u8f6f\u4ef6\u4f1a\u81ea\u52a8\u65e0\u89c6\u4ed6\u4eec\u3002\u6211\u4eec\u4f1a\u5728\u8bfe\u7a0b7B\u4e2d\u66f4\u8be6\u7ec6\u7684\u8bf4\u660e\u8fd9\u4ef6\u4e8b\u3002 <\/span><\/td><\/table><\/p>\n<p><form class=\"pbform\" action=\"#\" id=\"pbform3\" method=\"POST\">\n<div class='pybox modeNeutral ' id='pybox3'>\n<img title='You have not yet completed this problem.' src='https:\/\/cscircles.cemc.uwaterloo.ca\/dev\/wp-content\/plugins\/pybox\/files\/icon.png' class='pycheck'\/><div class=\"heading\"><span class='type'>Coding Exercise: <\/span><span class='title'>Timbits<\/span><\/div>\u8bf7\u5c1d\u8bd5\u4fee\u590d\u6240\u6709bug\u5e76\u4e14\u901a\u8fc7\u6240\u6709\u6d4b\u8bd5\uff01<div class=\"helpOuter\" style=\"display: none;\"><div class=\"helpInner\"><div style=\"text-align: center\">You need to create an account and log in to ask a question.<\/div><\/div><\/div><div class='pyboxTextwrap pyboxCodewrap RW resizy'  style='height: 526px;'><textarea wrap='off' name='usercode3' id='usercode3'  cols=10 rows=20   class='pyboxCode RW'>\ntimbitsLeft = int(input()) # \u6b65\u9aa41: \u5f97\u5230\u8f93\u5165\ntotalCost = 0              # \u6b65\u9aa42: \u8bbe\u5b9a\u603b\u8ba1\n\n# \u6b65\u9aa43: \u5c3d\u53ef\u80fd\u5730\u591a\u4e70\u5927\u76d2\u5b50\nbigBoxes = int(timbitsLeft \/ 40)\ntotalCost = totalCost + bigBoxes * 6.19    # \u66f4\u65b0\u603b\u8ba1\ntimbitsLeft = timbitsLeft - 40 * bigBoxes  # \u4ecd\u9700\u8ba1\u7b97timbits\n\nif timbitsLeft >= 20:                # \u6b65\u9aa44, \u6211\u4eec\u80fd\u8d2d\u4e70\u4e00\u4e2a\u4e2d\u76d2\u5b50\u4e48?\n    totalCost = totalCost + 3.39\n    timbitsLeft = timbitsLeft - 20\nif timbitsLeft >= 10:                # \u6b65\u9aa45, \u6211\u4eec\u80fd\u8d2d\u4e70\u4e00\u4e2a\u5c0f\u76d2\u5b50\u4e48?\n    totalCost = totalCost + 1.99\n    timbitsLeft = timbitsLeft - 20\n\ntotalCost = totalCost + timbitsLeft * 20 # \u6b65\u9aa46\nprint(totalCost)                         # \u6b65\u9aa47\n<\/textarea><\/div>\n<div id='pbhistory3' class='flexcontain' style='display:none;'><\/div>\n<input type='hidden' id='defaultCode3' value='timbitsLeft = int(input()) # \\u6b65\\u9aa41: \\u5f97\\u5230\\u8f93\\u5165\\ntotalCost = 0              # \\u6b65\\u9aa42: \\u8bbe\\u5b9a\\u603b\\u8ba1\\n\\n# \\u6b65\\u9aa43: \\u5c3d\\u53ef\\u80fd\\u5730\\u591a\\u4e70\\u5927\\u76d2\\u5b50\\nbigBoxes = int(timbitsLeft \\\/ 40)\\ntotalCost = totalCost + bigBoxes * 6.19    # \\u66f4\\u65b0\\u603b\\u8ba1\\ntimbitsLeft = timbitsLeft - 40 * bigBoxes  # \\u4ecd\\u9700\\u8ba1\\u7b97timbits\\n\\nif timbitsLeft >= 20:                # \\u6b65\\u9aa44, \\u6211\\u4eec\\u80fd\\u8d2d\\u4e70\\u4e00\\u4e2a\\u4e2d\\u76d2\\u5b50\\u4e48?\\n    totalCost = totalCost + 3.39\\n    timbitsLeft = timbitsLeft - 20\\nif timbitsLeft >= 10:                # \\u6b65\\u9aa45, \\u6211\\u4eec\\u80fd\\u8d2d\\u4e70\\u4e00\\u4e2a\\u5c0f\\u76d2\\u5b50\\u4e48?\\n    totalCost = totalCost + 1.99\\n    timbitsLeft = timbitsLeft - 20\\n\\ntotalCost = totalCost + timbitsLeft * 20 # \\u6b65\\u9aa46\\nprint(totalCost)                         # \\u6b65\\u9aa47\\n'><\/input>\n<div class='pyboxbuttons'><table><tr>\n<td><input type='submit' name='submit' id='submit3' value=' '\/><\/td>\n<td><input type='button' name='consolecopy' value=\"Open in console\" onclick=\"pbConsoleCopy(3)\" ><\/td>\n<td><input type='button' name='visualize' value=\"Visualize\" onclick=\"pbVisualize(3,'N')\" ><\/td>\n<td><input type='button' name='history' value=\"History\" onclick=\"historyClick(3,'6d.timbits')\" ><\/td>\n<\/tr><\/table><select id='pbSelect3' class='selectmore'><option name='more'>More actions...<\/option>\n<option name='default' data-pbonclick=\"pbSetText(3,descape($('#defaultCode3').val()))\" >Reset code to default<\/option>\n<option name='help' data-pbonclick=\"helpClick(3);\" >Help<\/option>\n<\/select><\/div>\n<input type=\"hidden\" name=\"lang\" value=\"\"\/><input type=\"hidden\" id=\"inputInUse3\" name=\"inputInUse\" value=\"Y\"\/>\n<input type=\"hidden\" name=\"pyId\" value=\"3\"\/>\n<input type=\"hidden\" name=\"hash\" value=\"2a8e49b74cd90681f437d1bd6fedf017\"\/>\n<div id='pbresults3' class='pbresults avoidline'><\/div>\n<\/div>\n<\/form>\n<script type='text\/javascript'>jQuery(function(){pbToggleCodeMirror(3);});document.getElementById(\"submit3\").value = \"Run program\";document.getElementById(\"inputInUse3\").value = \"N\";<\/script>\n<\/p>\n<p>\u997f\u4e86\u5417\uff1f\u4f60\u5df2\u7ecf\u51c6\u5907\u597d\u8fdb\u5165\u4e0b\u8282\u8bfe\u4e86\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u672c\u8bfe\u6709\u4e00\u4e9b\u5efa\u8bae\uff0c\u5173\u4e8e\u5982\u4f55\u4f7f\u8bbe\u8ba1\u548c\u8c03\u8bd5\u4f60\u7684\u7a0b\u5e8f\u53d8\u5f97\u66f4\u5bb9\u6613\u3002\u4f60\u505a\u7f16\u7a0b\u7684\u65f6\u95f4\u8d8a\u957f\uff0c\u5728\u907f\u514d\u548c\u4fee\u590d\u9519\u8bef\u4e0a\u5c31\u4f1a\u53d8\u5f97\u66f4\u597d\u3002\u4f46\u5728\u8fd9\u91cc\uff0c\u6211\u4eec\u4f1a\u5c1d\u8bd5\u7ed9\u4f60\u4e00\u4e9b\u975e\u5e38\u5e38\u7528\u53ca\u6709\u7528\u7684\u5efa\u8bae\u3002\u6211\u4eec\u4f1a\u8bb2\u89e3\u4ee5\u4e0b\u6280\u5de7\uff1a \u4e00\u6b21\u5efa\u7acb\u4e00\u4e2a\u90e8\u5206 \u52a8\u624b\u6765\u89e3\u51b3\u4e00\u4e9b\u4f8b\u5b50 \u5728\u4f60\u5f00\u59cb\u5199\u4ee3\u7801\u4e4b\u524d\u5148\u8ba1\u5212\u597d\u4f60\u7684\u4ee3\u7801 \u7f16\u5199\u4ee3\u7801 \u52a8\u624b\u6d4b\u8bd5\u4f60\u89e3\u51b3\u7684\u4f8b\u5b50 \u6d4b\u8bd5\u989d\u5916\u7684\u4f8b\u5b50\u5305\u62ec \u201c\u8fb9\u754c\u201d\u548c\u4e00\u4e9b\u968f\u673a\u7684\u60c5\u51b5 \u8fd9\u4e2a\u795e\u5947\u7684\u516c\u5f0f\u4e0d\u4f1a\u81ea\u52a8\u89e3\u51b3\u4e00\u5207\uff0c\u4f46\u5b83\u53ef\u4ee5\u8282\u7701\u4f60\u7684\u65f6\u95f4\uff0c\u5e76\u51cf\u5c11\u4f60\u5904\u7406\u540e\u7684\u95ee\u9898\u7684\u6570\u91cf\u3002 \u5f53\u4f60\u9047\u5230\u4e00\u4e2a\u95ee\u9898\uff0c\u4e00\u4e9b\u5e2e\u52a9\u8c03\u8bd5\u5b83\u7684\u7b56\u7565\u6709 \u4f7f\u7528\u8bca\u65ad\u6253\u5370\u8bed\u53e5\u00a0(\u6211\u4eec\u5c06\u5728\u4ee5\u540e\u7684\u8bfe\u4e2d\u4f7f\u7528), \u4f7f\u7528\u53ef\u89c6\u5316\u5de5\u5177, \u4ed4\u7ec6\u9605\u8bfb\u4ee3\u7801, \u4ee5\u53ca\u7f16\u5199\u597d\u7684\u6d4b\u8bd5\u3002\u00a0\u5982\u679c\u4f60 \u5728\u5bb6\u4e2d\u8fd0\u884cPython, \u4f60\u53ef\u4ee5\u4f7f\u7528\u65ad\u70b9\u548c\u5206\u6b65\u7684\u5de5\u5177\u6765\u66f4\u597d\u7684\u7406\u89e3\u9519\u8bef\u3002 \u4e00\u4e2a \u8fd0\u7b97\u6cd5\u5219\u00a0\u610f\u5473\u7740\u4e00\u7cfb\u5217\u7684\u6307\u4ee4\u3002 \u800c\u8ba1\u7b97\u673a\u7a0b\u5e8f\u9700\u8981\u4f7f\u7528\u7279\u5b9a\u7684\u8bed\u8a00\u7f16\u5199\uff0c\u5982Python\u548cJavaScript\u3002algorithm\u8fd9\u4e2a\u8bcd\u610f\u5473\u7740\u4e00\u6b65\u4e00\u6b65\u7684\u6307\u793a\uff0c\u53ef\u4ee5\u7528\u8bed\u8a00\u6216\u56fe\u8868\u793a\u3002\u4f8b\u5982\uff0c\u4e00\u4e2a\u751c\u751c\u5708\u98df\u8c31\u662f\u4e00\u4e2a\u7b97\u6cd5\uff0c\u5176\u4e2d\u201c\u91cf\u51fa3\u676f\u9762\u7c89\u201d\u4e00\u6b65\uff0c\u201c\u8ba9\u9762\u56e2\u53d1\u9175\u4e24\u5c0f\u65f6\u201d\u662f\u53e6\u4e00\u6b65\u3002\u6211\u4eec\u4f1a\u5728\u8fd9\u8282\u8bfe\u4e2d\u5f00\u53d1\u4e00\u4e2a\u7b80\u5355\u7684\u7b97\u6cd5\u3002 \u7136\u540e\u6211\u4eec\u4f1a\u843d\u5b9e\u8fd9\u610f\u5473\u7740\u5c06\u5b83\u8f6c\u6362\u6210\u4e00\u4e2a\u53ef\u4ee5\u8fd0\u884c\u7684\u8ba1\u7b97\u673a\u7a0b\u5e8f\u3002 \u95ee\u9898\uff1a\u751c\u751c\u5708\u8ba1\u7b97\u5668 Tim Horton's, \u4e00\u5bb6\u5728\u52a0\u62ff\u5927\u7684\u5496\u5561\u8fde\u9501\u5e97, \u9500\u552e timbits, \u4e00\u79cd\u597d\u5403\u7684\u751c\u751c\u5708\u7403: \u4f60\u5fc5\u987b\u5728\u63a5\u4e0b\u6765\u7684\u51e0\u5468\u91cc\u7ec4\u7ec7\u51e0\u6b21\u805a\u4f1a\uff0c\u4f60\u4f1a\u5bf9\u6bcf\u4e00\u4e2a\u805a\u4f1a\u8ba2\u8d2d\u4e0d\u540c\u6570\u91cf\u7684timbits\u3002\u6240\u4ee5\u4e3a\u4e86\u4f60\u7684\u9884\u7b97\u8ba1\u5212\uff0c\u4f60\u60f3\u505a\u4e00\u4e2a\u7a0b\u5e8f\u6765\u8ba1\u7b97\u4efb\u610f\u6570\u91cftimbits\u7684\u4ef7\u683c\u3002\u5728\u4f60\u5f53\u5730\u7684\u5206\u5e97\uff0c\u90fd\u662f\u4e0b\u9762\u8fd9\u4e9b\u4ef7\u683c\uff1a \u6570\u91cf \u4ef7\u683c 1 $0.20 10 (\u5c0f\u76d2) $1.99 20 (\u4e2d\u76d2) $3.39 40 (\u5927\u76d2) &hellip; <a href=\"https:\/\/cscircles.cemc.uwaterloo.ca\/dev\/zh-6d\/\">Continue reading <span class=\"meta-nav\">&rarr;<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-9233","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/cscircles.cemc.uwaterloo.ca\/dev\/wp-json\/wp\/v2\/pages\/9233","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/cscircles.cemc.uwaterloo.ca\/dev\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/cscircles.cemc.uwaterloo.ca\/dev\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/cscircles.cemc.uwaterloo.ca\/dev\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/cscircles.cemc.uwaterloo.ca\/dev\/wp-json\/wp\/v2\/comments?post=9233"}],"version-history":[{"count":24,"href":"https:\/\/cscircles.cemc.uwaterloo.ca\/dev\/wp-json\/wp\/v2\/pages\/9233\/revisions"}],"predecessor-version":[{"id":10215,"href":"https:\/\/cscircles.cemc.uwaterloo.ca\/dev\/wp-json\/wp\/v2\/pages\/9233\/revisions\/10215"}],"wp:attachment":[{"href":"https:\/\/cscircles.cemc.uwaterloo.ca\/dev\/wp-json\/wp\/v2\/media?parent=9233"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}