{"id":1700,"date":"2017-01-26T04:46:48","date_gmt":"2017-01-25T20:46:48","guid":{"rendered":"http:\/\/cn.hostease.com\/xueyuan\/?p=1700"},"modified":"2025-01-08T16:41:10","modified_gmt":"2025-01-08T08:41:10","slug":"%e7%bb%8f%e5%85%b8%e7%ae%97%e6%b3%95%e9%a2%98%e6%af%8f%e6%97%a5%e6%bc%94%e7%bb%83-%e7%ac%ac%e4%b8%80%e9%a2%98-%e7%99%be%e9%92%b1%e4%b9%b0%e7%99%be%e9%b8%a1","status":"publish","type":"post","link":"https:\/\/cn.hostease.com\/xueyuan\/jishu\/%e7%bb%8f%e5%85%b8%e7%ae%97%e6%b3%95%e9%a2%98%e6%af%8f%e6%97%a5%e6%bc%94%e7%bb%83-%e7%ac%ac%e4%b8%80%e9%a2%98-%e7%99%be%e9%92%b1%e4%b9%b0%e7%99%be%e9%b8%a1\/","title":{"rendered":"\u7ecf\u5178\u7b97\u6cd5\u9898\u6bcf\u65e5\u6f14\u7ec3\u2014\u2014\u7b2c\u4e00\u9898 \u767e\u94b1\u4e70\u767e\u9e21"},"content":{"rendered":"\n<p>\u767e\u94b1\u4e70\u767e\u9e21\u7684\u95ee\u9898\u7b97\u662f\u4e00\u5957\u975e\u5e38\u7ecf\u5178\u7684\u4e0d\u5b9a\u65b9\u7a0b\u7684\u95ee\u9898\uff0c\u9898\u76ee\u5f88\u7b80\u5355\uff1a\u516c\u9e215\u6587\u94b1\u4e00\u53ea\uff0c\u6bcd\u9e213\u6587\u94b1\u4e00\u53ea\uff0c\u5c0f\u9e213\u53ea\u4e00\u6587\u94b1\uff0c<\/p>\n\n\n\n<p>\u7528100\u6587\u94b1\u4e70\u4e00\u767e\u53ea\u9e21,\u5176\u4e2d\u516c\u9e21\uff0c\u6bcd\u9e21\uff0c\u5c0f\u9e21\u90fd\u5fc5\u987b\u8981\u6709\uff0c\u95ee\u516c\u9e21\uff0c\u6bcd\u9e21\uff0c\u5c0f\u9e21\u8981\u4e70\u591a\u5c11\u53ea\u521a\u597d\u51d1\u8db3100\u6587\u94b1\u3002<\/p>\n\n\n\n<p>&nbsp;<\/p>\n\n\n\n<p>\u5206\u6790\uff1a\u4f30\u8ba1\u73b0\u5728\u5c0f\u5b66\u751f\u90fd\u80fd\u624b\u5de5\u63a8\u7b97\u8fd9\u5957\u9898\uff0c\u53ea\u4e0d\u8fc7\u6211\u4eec\u7528\u8ba1\u7b97\u673a\u6765\u63a8\u7b97\uff0c\u6211\u4eec\u53ef\u4ee5\u8bbe\u516c\u9e21\u4e3ax\uff0c\u6bcd\u9e21\u4e3ay\uff0c\u5c0f\u9e21\u4e3az\uff0c\u90a3\u4e48\u6211\u4eec<\/p>\n\n\n\n<p>\u53ef\u4ee5\u5f97\u51fa\u5982\u4e0b\u7684\u4e0d\u5b9a\u65b9\u7a0b\uff0c<\/p>\n\n\n\n<p>x+y+z=100,<\/p>\n\n\n\n<p>5x+3y+z\/3=100\uff0c<\/p>\n\n\n\n<p>\u4e0b\u9762\u518d\u770b\u770bx\uff0cy\uff0cz\u7684\u53d6\u503c\u8303\u56f4\u3002<\/p>\n\n\n\n<p>\u7531\u4e8e\u53ea\u6709100\u6587\u94b1\uff0c\u52195x&lt;100 =&gt; 0&lt;x&lt;20, \u540c\u7406 &nbsp;0&lt;y&lt;33,\u90a3\u4e48z=100-x-y\uff0c<\/p>\n\n\n\n<p>\u597d\uff0c\u6211\u4eec\u5df2\u7ecf\u5206\u6790\u6e05\u695a\u4e86\uff0c\u4e0b\u9762\u5c31\u53ef\u4ee5\u7f16\u7801\u4e86\u3002<\/p>\n\n\n\n<div class=\"cnblogs_code\">\n<div class=\"cnblogs_code_toolbar\">&nbsp;<\/div>\n<pre> 1     class Program\n 2     {\n 3         static void Main(string[] args)\n 4         {\n 5             \/\/\u516c\u9e21\u7684\u4e0a\u7ebf\n 6             for (int x = 1; x &lt; 20; x++)\n 7             {\n 8                 \/\/\u6bcd\u9e21\u7684\u4e0a\u7ebf\n 9                 for (int y = 1; y &lt; 33; y++)\n10                 {\n11                     \/\/\u5269\u4f59\u5c0f\u9e21\n12                     var z = 100 - x - y;\n13 \n14                     if ((z % 3 == 0) &amp;&amp; (x * 5 + y * 3 + z \/ 3 == 100))\n15                     {\n16                         Console.WriteLine(\"\u516c\u9e21:{0}\u53ea\uff0c\u6bcd\u9e21:{1}\u53ea,\u5c0f\u9e21:{2}\u53ea\", x, y, z);\n17                     }\n18                 }\n19             }\n20             Console.Read();\n21         }\n22     }<\/pre>\n<figure><a title=\"\u590d\u5236\u4ee3\u7801\"><\/a><\/figure><div class=\"cnblogs_code_toolbar\"><span class=\"cnblogs_code_copy\"><\/span><\/div>\n<\/div>\n\n\n\n<figure class=\"wp-block-image size-full\"><a href=\"https:\/\/cn.hostease.com\/xueyuan\/wp-content\/uploads\/2017\/01\/math.png\"><img loading=\"lazy\" decoding=\"async\" width=\"291\" height=\"89\" src=\"https:\/\/cn.hostease.com\/xueyuan\/wp-content\/uploads\/2017\/01\/math.png\" alt=\"\" class=\"wp-image-9012\"\/><\/a><\/figure>\n\n\n\n<p><\/p>\n\n\n\n<p>\u7ed3\u679c\u51fa\u6765\u4e86\uff0c\u786e\u5b9e\u8fd9\u9053\u9898\u975e\u5e38\u7b80\u5355\uff0c\u6211\u4eec\u8981\u77e5\u9053\u76ee\u524d\u7684\u65f6\u95f4\u590d\u6742\u5ea6\u662fO(N<sup>2<\/sup>),\u5b9e\u9645\u5e94\u7528\u4e2d\u8fd9\u4e2a\u590d\u6742\u5ea6\u662f\u4e0d\u80fd\u8ba9\u4f60\u63a5\u53d7\u7684\uff0c\u6700\u591a\u6700\u591a\u80fd\u8ba9<\/p>\n\n\n\n<p>\u4eba\u63a5\u53d7\u7684\u662fO(N)\u3002<\/p>\n\n\n\n<p>\u6240\u4ee5\u8bf4\u6211\u4eec\u5fc5\u987b\u8981\u4f18\u5316\u4e00\u4e0b\uff0c\u4ece\u7ed3\u679c\u4e2d\u6211\u4eec\u53ef\u4ee5\u53d1\u73b0\u8fd9\u6837\u7684\u4e00\u4e2a\u89c4\u5f8b\uff1a\u516c\u9e21\u662f4\u7684\u500d\u6570,\u6bcd\u9e21\u662f7\u7684\u9012\u51cf\u7387\uff0c\u5c0f\u9e21\u662f3\u7684\u9012\u589e\u7387\uff0c\u89c4\u5f8b\u54ea\u91cc<\/p>\n\n\n\n<p>\u6765\uff0c\u80af\u5b9a\u9700\u8981\u6211\u4eec\u63a8\u7b97\u4e00\u4e0b\u8fd9\u4e2a\u4e0d\u5b9a\u65b9\u7a0b\u3002<\/p>\n\n\n\n<p>x+y+z=100 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;\u2460<\/p>\n\n\n\n<p>5x+3y+z\/3=100 &nbsp; &nbsp;\u2461<\/p>\n\n\n\n<p>\u4ee4\u2461x3-\u2460 \u53ef\u5f97<\/p>\n\n\n\n<p>7x+4y=100<\/p>\n\n\n\n<p>=&gt;y=25-(7\/4)x &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;\u2462<\/p>\n\n\n\n<p>\u53c8\u56e0\u4e3a0&lt;y&lt;100\u7684\u81ea\u7136\u6570\uff0c\u5219\u53ef\u4ee4<\/p>\n\n\n\n<p>x=4k &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;\u2463<\/p>\n\n\n\n<p>\u5c06\u2463\u4ee3\u5165\u2462\u53ef\u5f97<\/p>\n\n\n\n<p>=&gt; y=25-7k &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; \u2464<\/p>\n\n\n\n<p>\u5c06\u2463\u2464\u4ee3\u5165\u2460\u53ef\u77e5<\/p>\n\n\n\n<p>=&gt; z=75+3k &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; \u2465<\/p>\n\n\n\n<p>&nbsp;<\/p>\n\n\n\n<p>\u8981\u4fdd\u8bc10&lt;x\uff0cy\uff0cz&lt;100\u7684\u8bdd\uff0ck\u7684\u53d6\u503c\u8303\u56f4\u53ea\u80fd\u662f1,2,3\uff0c\u4e0b\u9762\u6211\u4eec\u7ee7\u7eed\u4e0a\u4ee3\u7801\u3002<\/p>\n\n\n\n<div class=\"cnblogs_code\">\n<figure><a title=\"\u590d\u5236\u4ee3\u7801\"><\/a><\/figure><div class=\"cnblogs_code_toolbar\"><span class=\"cnblogs_code_copy\"><\/span><\/div>\n<pre> 1     class Program\n 2     {\n 3         static void Main(string[] args)\n 4         {\n 5             int x, y, z;\n 6 \n 7             for (int k = 1; k &lt;= 3; k++)\n 8             {\n 9                 x = 4 * k;\n10                 y = 25 - 7 * k;\n11                 z = 75 + 3 * k;\n12 \n13                 Console.WriteLine(\"\u516c\u9e21:{0}\u53ea\uff0c\u6bcd\u9e21:{1}\u53ea,\u5c0f\u9e21:{2}\u53ea\", x, y, z);\n14             }\n15 \n16             Console.Read();\n17         }\n18     }<\/pre>\n<figure><a title=\"\u590d\u5236\u4ee3\u7801\"><\/a><\/figure><div class=\"cnblogs_code_toolbar\"><span class=\"cnblogs_code_copy\"><\/span><\/div>\n<\/div>\n\n\n\n<figure class=\"wp-block-image size-full\"><a href=\"https:\/\/cn.hostease.com\/xueyuan\/wp-content\/uploads\/2017\/01\/math2.png\"><img loading=\"lazy\" decoding=\"async\" width=\"311\" height=\"102\" src=\"https:\/\/cn.hostease.com\/xueyuan\/wp-content\/uploads\/2017\/01\/math2.png\" alt=\"\" class=\"wp-image-9013\" srcset=\"https:\/\/cn.hostease.com\/xueyuan\/wp-content\/uploads\/2017\/01\/math2.png 311w, https:\/\/cn.hostease.com\/xueyuan\/wp-content\/uploads\/2017\/01\/math2-300x98.png 300w\" sizes=\"auto, (max-width: 311px) 100vw, 311px\" \/><\/a><\/figure>\n\n\n\n<p><\/p>\n\n\n\n<p>&nbsp;<\/p>\n\n\n\n<p>\u8fd9\u4e00\u6b21\u6211\u4eec\u505a\u5230\u4e86O(N)\u7684\u65f6\u95f4\u590d\u6742\u5ea6\uff0c\u5f88\u4e0d\u9519\uff0c\u8d77\u7801\u4f18\u5316\u5230\u4e86\u6211\u80fd\u63a5\u53d7\u7684\u8303\u56f4\u5185\uff0c\u6216\u8bb8\u6211\u4eec\u611f\u89c9\u5230\u4e86\u6570\u5b66\u7684\u9b45\u529b\uff0c\u662f\u7684\uff0c\u56e0\u4e3a&#8230;.<\/p>\n\n\n\n<p>\u6570\u5b66\u662f\u79d1\u5b66\u7684\u7687\u540e\u3002\u7687\u4e0a\u81ea\u7136\u5c31\u662f\u7269\u7406\u4e86&#8230;<\/p>\n\n\n\n<p>&nbsp;<\/p>\n\n\n\n<p>\u539f\u6587\u6765\u81ea\u7f51\u7edc\u535a\u5ba2https:\/\/www.cnblogs.com\/huangxincheng\/archive\/2012\/08\/05\/2624156.html<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u767e\u94b1\u4e70\u767e\u9e21\u7684\u95ee\u9898\u7b97\u662f\u4e00\u5957\u975e\u5e38\u7ecf\u5178\u7684\u4e0d\u5b9a\u65b9\u7a0b\u7684\u95ee\u9898\uff0c\u9898\u76ee\u5f88\u7b80\u5355\uff1a\u516c\u9e215\u6587\u94b1\u4e00\u53ea\uff0c\u6bcd\u9e213\u6587\u94b1\u4e00\u53ea\uff0c\u5c0f\u9e213\u53ea\u4e00\u6587\u94b1\uff0c &#8230; <a title=\"\u7ecf\u5178\u7b97\u6cd5\u9898\u6bcf\u65e5\u6f14\u7ec3\u2014\u2014\u7b2c\u4e00\u9898 \u767e\u94b1\u4e70\u767e\u9e21\" class=\"read-more\" href=\"https:\/\/cn.hostease.com\/xueyuan\/jishu\/%e7%bb%8f%e5%85%b8%e7%ae%97%e6%b3%95%e9%a2%98%e6%af%8f%e6%97%a5%e6%bc%94%e7%bb%83-%e7%ac%ac%e4%b8%80%e9%a2%98-%e7%99%be%e9%92%b1%e4%b9%b0%e7%99%be%e9%b8%a1\/\" aria-label=\"\u9605\u8bfb \u7ecf\u5178\u7b97\u6cd5\u9898\u6bcf\u65e5\u6f14\u7ec3\u2014\u2014\u7b2c\u4e00\u9898 \u767e\u94b1\u4e70\u767e\u9e21\">\u9605\u8bfb\u66f4\u591a<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[5],"tags":[],"class_list":["post-1700","post","type-post","status-publish","format-standard","hentry","category-jishu"],"aioseo_notices":[],"jetpack_featured_media_url":"","jetpack-related-posts":[],"jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/cn.hostease.com\/xueyuan\/wp-json\/wp\/v2\/posts\/1700","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/cn.hostease.com\/xueyuan\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/cn.hostease.com\/xueyuan\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/cn.hostease.com\/xueyuan\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/cn.hostease.com\/xueyuan\/wp-json\/wp\/v2\/comments?post=1700"}],"version-history":[{"count":3,"href":"https:\/\/cn.hostease.com\/xueyuan\/wp-json\/wp\/v2\/posts\/1700\/revisions"}],"predecessor-version":[{"id":9243,"href":"https:\/\/cn.hostease.com\/xueyuan\/wp-json\/wp\/v2\/posts\/1700\/revisions\/9243"}],"wp:attachment":[{"href":"https:\/\/cn.hostease.com\/xueyuan\/wp-json\/wp\/v2\/media?parent=1700"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/cn.hostease.com\/xueyuan\/wp-json\/wp\/v2\/categories?post=1700"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/cn.hostease.com\/xueyuan\/wp-json\/wp\/v2\/tags?post=1700"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}