{"id":5340,"date":"2025-01-15T14:21:34","date_gmt":"2025-01-15T06:21:34","guid":{"rendered":"http:\/\/xinblog.ltd\/?p=5340"},"modified":"2025-01-23T14:27:37","modified_gmt":"2025-01-23T06:27:37","slug":"%e5%9f%ba%e7%a1%80%e6%95%b0%e5%ad%a6%e8%af%be5-%e9%80%92%e5%bd%92","status":"publish","type":"post","link":"http:\/\/xinblog.ltd\/?p=5340","title":{"rendered":"\u57fa\u7840\u6570\u5b66\u8bfe5-\u9012\u5f52"},"content":{"rendered":"<p>\u57fa\u7840\u6570\u5b66\u8bfe5-\u9012\u5f52<\/p>\n<p>\u8fd9\u91cc\u6211\u4eec\u8bb2\u8ff0\u4e0b\u9012\u5f52<\/p>\n<p>\u9012\u5f52\u5e38\u7528\u4e8e\u4e00\u4e9b\u4fdd\u5b58\u5927\u91cf\u7684\u4e2d\u95f4\u53d8\u91cf\uff0c\u5982\u679c\u76f4\u63a5\u4f7f\u7528\u5faa\u73af\u7684\u65b9\u5f0f\u53bb\u4fdd\u5b58\u7684\u8bdd\uff0c\u5bf9\u4e8e\u8fd9\u4e9b\u4e2d\u95f4\u72b6\u6001\uff0c\u5e76\u4e0d\u597d\u8fdb\u884c\u4fdd\u5b58\u3002\u800c\u9012\u5f52\uff0c\u5176\u6bcf\u6b21\u90fd\u8fdb\u884c\u7684\u5d4c\u5957\u8c03\u7528\u90fd\u53ef\u4ee5\u4fdd\u5b58\u81ea\u5df1\u7684\u5c40\u90e8\u53d8\u91cf\u3002<\/p>\n<p>\u6700\u7ec8\u5f62\u6210\u4e00\u4e2a\u5982\u4e0b\u7684\u56fe<\/p>\n<p><img decoding=\"async\" loading=\"lazy\" width=\"862\" height=\"456\" class=\"wp-image-5341\" src=\"http:\/\/xinblog.ltd\/wp-content\/uploads\/2025\/01\/word-image-72.png\" srcset=\"http:\/\/xinblog.ltd\/wp-content\/uploads\/2025\/01\/word-image-72.png 862w, http:\/\/xinblog.ltd\/wp-content\/uploads\/2025\/01\/word-image-72-300x159.png 300w, http:\/\/xinblog.ltd\/wp-content\/uploads\/2025\/01\/word-image-72-768x406.png 768w\" sizes=\"(max-width: 862px) 100vw, 862px\" \/><\/p>\n<p>\u5728\u8fd9\u4e2a\u56fe\u4e2d\uff0c\u6211\u4eec\u5e76\u6ca1\u6709\u4f53\u73b0\u51fa\u5f53\u9012\u5f52\u5230\u6700\u7ec8\u7684\u7ed3\u679c\u7684\u65f6\u5019\uff0c\u8be5\u5982\u4f55\u89e3\u51b3\u95ee\u9898\u5462\uff1f<\/p>\n<p>\u5c31\u6bd4\u5982\u6211\u4eec\u7684\u5165\u53e3\u662f\u5bf9n\u7b49\u4e8ek\u7684\u65f6\u5019\u8fdb\u884c\u5411\u4e0b\u9012\u5f52\uff0c\u8fd9\u6837n\u4e0d\u65ad\u7684\u51cf\u5c11\uff0c\u76f4\u5230n=1\u7684\u65f6\u5019\uff0c\u5c31\u662f\u9012\u5f52\u7684\u5c3d\u5934\uff0c\u5982\u679c\u9012\u5f52\u5230\u4e86\u5c3d\u5934\uff0c\u5e38\u89c1\u7684\u65b9\u5f0f\u662f\u8fd4\u56de\u4e00\u4e2a\u56fa\u5b9a\u503c\uff0c\u7136\u540e\u4e0d\u65ad\u7684\u56de\u6eda\uff0c\u6c47\u603b\u5230n=k\u7684\u65f6\u5019\u3002<\/p>\n<p>\u4e5f\u5c31\u662f\u8bf4\uff0c\u5c06\u590d\u6742\u7684\u95ee\u9898\uff0c\u4e0d\u65ad\u7684\u8fdb\u884c\u7b80\u5316\uff0c\u7b80\u5316\u4e3a\u66f4\u4e3a\u7b80\u5355\u7684\u95ee\u9898\u8fdb\u884c\u6c42\u89e3\u3002\u76f4\u5230\u6700\u7b80\u5355\u7684\u5f62\u5f0f\u3002<\/p>\n<table>\n<tbody>\n<tr>\n<td>import java.util.ArrayList;<\/p>\n<p>public class Lesson5 {<\/p>\n<p>public static long[] rewards = {1, 2, 5, 10}; \/\/ \u56db\u79cd\u9762\u989d\u7684\u7eb8\u5e01<\/p>\n<p>\/**<\/p>\n<p>* @param totalReward-\u5956\u8d4f\u603b\u91d1\u989d\uff0cresult+\u4fdd\u5b58\u5f53\u524d\u7684\u89e3<\/p>\n<p>* @return void<\/p>\n<p>* @Description: \u4f7f\u7528\u51fd\u6570\u7684\u9012\u5f52\uff08\u5d4c\u5957\uff09\u8c03\u7528\uff0c\u627e\u51fa\u6240\u6709\u53ef\u80fd\u7684\u5956\u8d4f\u7ec4\u5408<\/p>\n<p>*\/<\/p>\n<p>public static void get(long totalReward, ArrayList&lt;Long&gt; result) {<\/p>\n<p>\/\/ \u5f53totalReward = 10\u65f6\uff0c\u8bc1\u660e\u5b83\u662f\u6ee1\u8db3\u6761\u4ef6\u7684\u89e3\uff0c\u7ed3\u675f\u5d4c\u5957\u8c03\u7528\uff0c\u8f93\u51fa\u89e3<\/p>\n<p>if (totalReward == 10) {<\/p>\n<p>System.out.println(result);<\/p>\n<p>return;<\/p>\n<p>}<\/p>\n<p>\/\/ \u5f53totalReward &gt; 10\u65f6\uff0c\u8bc1\u660e\u5b83\u4e0d\u662f\u6ee1\u8db3\u6761\u4ef6\u7684\u89e3\uff0c\u4e0d\u8f93\u51fa<\/p>\n<p>else if (totalReward &gt; 10) {<\/p>\n<p>return;<\/p>\n<p>} else {<\/p>\n<p>for (int i = 0; i &lt; rewards.length; i++) {<\/p>\n<p>ArrayList&lt;Long&gt; newResult = (ArrayList&lt;Long&gt;) (result.clone()); \/\/ \u7531\u4e8e\u67094\u79cd\u60c5\u51b5\uff0c\u9700\u8981clone\u5f53\u524d\u7684\u89e3\u5e76\u4f20\u5165\u88ab\u8c03\u7528\u7684\u51fd\u6570<\/p>\n<p>newResult.add(rewards[i]); \/\/ \u8bb0\u5f55\u5f53\u524d\u7684\u9009\u62e9\uff0c\u89e3\u51b3\u4e00\u70b9\u95ee\u9898<\/p>\n<p>get(totalReward + rewards[i], newResult); \/\/ \u5269\u4e0b\u7684\u95ee\u9898\uff0c\u7559\u7ed9\u5d4c\u5957\u8c03\u7528\u53bb\u89e3\u51b3<\/p>\n<p>}<\/p>\n<p>}<\/p>\n<p>}<\/p>\n<p>}<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>\u6bd4\u5982\u4e0a\u9762\u7684\uff0c\u8fd9\u6837\u6211\u4eec\u5c31\u901a\u8fc7\u9012\u5f52\u7684\u65b9\u5f0f\uff0c\u5c55\u793a\u4e86\u6240\u6709\u53ef\u884c\u7684\u7ec4\u5408\u65b9\u5f0f<\/p>\n<p>\u800c\u5728\u8ba1\u7b97\u673a\u9886\u57df\uff0c\u9012\u5f52\u66f4\u591a\u7684\u573a\u666f\u662f\u9762\u5411\u5206\u6cbb\u7684\u9886\u57df\u8fdb\u884c\u5904\u7406\u3002<\/p>\n<p>\u5728\u8ba1\u7b97\u673a\u4e2d\uff0c\u5206\u6cbb\u5f80\u5f80\u9762\u5bf9\u7684\u95ee\u9898\u662f\u53ef\u4ee5\u5c06\u4e00\u4e2a\u5de8\u5927\u7684\u95ee\u9898\u4e0d\u65ad\u7684\u62c6\u5206\u4e3a\u5c0f\u95ee\u9898\uff0c\u5e76\u8fdb\u884c\u8ba1\u7b97\u7684\u4eba\u7269\uff0c\u5e38\u89c1\u7684\u5c31\u662f\u5f52\u5e76\u6392\u5e8f\u3002<\/p>\n<p>\u6bd4\u5982\u6211\u4eec\u9700\u8981\u5bf9\u4e00\u4e2a\u6570\u7ec4\u8fdb\u884c\u6392\u5e8f\uff0c\u90a3\u4e48\u4e00\u79cd\u529e\u6cd5\u5c31\u662f\u4e0d\u65ad\u7684\u5c06\u6570\u7ec4\u62c6\u5206\uff0c\u76f4\u5230\u62c6\u5206\u5230\u4e00\u4e2a\u503c\uff0c\u7136\u540e\u4e0d\u65ad\u7684\u5408\u5e76\uff0c\u901a\u8fc7\u4fdd\u8bc1\u5c0f\u6570\u7ec4\u6709\u5e8f\uff0c\u4ece\u800c\u5728\u4e0a\u5c42\u5408\u5e76\u7684\u65f6\u5019\uff0c\u901a\u8fc7\u5df2\u7ecf\u6709\u5e8f\u7684\u4e24\u4e2a\u5b50\u6570\u7ec4\uff0c\u4ece\u800c\u52a0\u5feb\u6392\u5e8f\u987a\u5e8f<\/p>\n<p>\u6240\u4ee5\u8fd9\u4e2a\u7b97\u6cd5\uff0c\u5c31\u662f\u5c06\u957f\u5ea6\u4e3an\u7684\u6570\u5217\uff0c\u6bcf\u6b21\u7b80\u5316\u4e3a\u957f\u5ea6\u4e3an-1\u7684\u6570\u5217\uff0c\u76f4\u5230\u957f\u5ea6\u4e3a1\uff0c\u7136\u540e\u4e0d\u65ad\u7684\u5408\u5e76<\/p>\n<p>\u5728\u8fd9\u4e2a\u7b97\u6cd5\u4e2d\uff0c\u6211\u4eec\u5c31\u8bf4\u660e\u4e86\u5206\u800c\u6cbb\u4e4b\u7684\u601d\u60f3\uff0c\u5206\u800c\u6cbb\u4e4b\uff0c\u5c31\u662f\u5c06\u4e00\u4e2a\u590d\u6742\u7684\u95ee\u9898\uff0c\u5206\u89e3\u4e3a\u4e24\u4e2a\u6216\u591a\u4e2a\u5b50\u95ee\u9898\uff0c\u5b50\u95ee\u9898\u9012\u5f52\u5f0f\u7684\u7ec6\u5206\uff0c\u76f4\u5230\u95ee\u9898\u5f88\u7b80\u5355\uff0c \u53ef\u4ee5\u88ab\u6c42\u89e3\u3002<\/p>\n<p>\u540e\u6765\u5f15\u5165\u5230\u5206\u5e03\u5f0f\u7cfb\u7edf\u4e2d, \u5c31\u6bd4\u5982\u8981\u5bf9\u4e00\u4e2a\u5927\u578b\u7684\u6570\u636e\u8fdb\u884c\u6392\u5e8f\uff0c\u6bd4\u59821024G\uff0c\u8d85\u8fc7\u4e86\u5355\u53f0\u673a\u5668\u6027\u80fd\u4e0a\u7ebf\uff0c\u662f\u5426\u5c31\u53ef\u4ee5\u5f15\u5165\u5206\u6cbb\uff0c\u5c06\u5176\u5206\u89e3\u4e3a\u66f4\u5c0f\u7684\u6570\u636e\u96c6\uff0c\u5206\u914d\u5230\u5176\u4ed6\u673a\u5668\u4e0a\uff0c\u5e76\u884c\u7684\u5904\u7406\uff0c\u5904\u7406\u5b8c\u6210\u8fdb\u884c\u6c47\u603b\u3002\u6700\u540e\u8fdb\u884c\u5408\u5e76\u8fd4\u56de <img decoding=\"async\" loading=\"lazy\" width=\"735\" height=\"469\" class=\"wp-image-5342\" src=\"http:\/\/xinblog.ltd\/wp-content\/uploads\/2025\/01\/word-image-73.png\" srcset=\"http:\/\/xinblog.ltd\/wp-content\/uploads\/2025\/01\/word-image-73.png 735w, http:\/\/xinblog.ltd\/wp-content\/uploads\/2025\/01\/word-image-73-300x191.png 300w\" sizes=\"(max-width: 735px) 100vw, 735px\" \/><\/p>\n<p>\u4e0a\u9762\u7684\u56fe\u5c31\u662f\u7b80\u5355\u7684\u5f52\u5e76\u7684\u5b9e\u73b0<\/p>\n<p>\u5f53\u7136\u5728\u5b9e\u9645\u7684\u5b9e\u73b0\u8fc7\u7a0b\u4e2d\uff0c\u4e0d\u4f1a\u51fa\u73b0\u4e0a\u56fe\u4e2d\u673a\u56682 \u673a\u56683 \u4e0d\u627f\u62c5\u8ba1\u7b97\u4efb\u52a1\u7684\u60c5\u51b5<\/p>\n<p>\u53ef\u80fd\u662f\u673a\u56682\u81ea\u8eab\u627f\u62c5\u4e00\u90e8\u5206\u8ba1\u7b97\uff0c\u7136\u540e\u5c06\u53e6\u4e00\u90e8\u5206\u7ee7\u7eed\u4e0b\u53d1\u3002<\/p>\n<p>\u90a3\u4e48\u6211\u4eec\u603b\u7ed3\u4e0b\u5206\u6cbb<\/p>\n<p>\u5206\u6cbb\u9700\u8981\u7ecf\u8fc7\u4e09\u4e2a\u9636\u6bb5<\/p>\n<p>\u5206\u522b\u662f\u6570\u636e\u5206\u5272\u548c\u6620\u5c04<\/p>\n<p>\u5f52\u7ea6<\/p>\n<p>\u5408\u5e76<\/p>\n<p>\u8fd9\u4e09\u4e2a\u6b65\u9aa4\uff0c\u6700\u7ec8\u5b9e\u73b0\u4e86\u673a\u5668\u7684\u5206\u6cbb\u5408\u5e76\u3002<\/p>\n<p>\u56e0\u4e3a\u5206\u6cbb\uff0c\u8fd9\u4e5f\u662f\u4e3a\u4ec0\u4e48\u6211\u4eec\u9700\u8981\u5b66\u4e60\u9012\u5f52\u7684\u539f\u56e0\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u57fa\u7840\u6570\u5b66\u8bfe5-\u9012\u5f52 \u8fd9\u91cc\u6211\u4eec\u8bb2 [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[46],"tags":[],"_links":{"self":[{"href":"http:\/\/xinblog.ltd\/index.php?rest_route=\/wp\/v2\/posts\/5340"}],"collection":[{"href":"http:\/\/xinblog.ltd\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/xinblog.ltd\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/xinblog.ltd\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/xinblog.ltd\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=5340"}],"version-history":[{"count":1,"href":"http:\/\/xinblog.ltd\/index.php?rest_route=\/wp\/v2\/posts\/5340\/revisions"}],"predecessor-version":[{"id":5343,"href":"http:\/\/xinblog.ltd\/index.php?rest_route=\/wp\/v2\/posts\/5340\/revisions\/5343"}],"wp:attachment":[{"href":"http:\/\/xinblog.ltd\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=5340"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/xinblog.ltd\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=5340"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/xinblog.ltd\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=5340"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}