{"id":347,"date":"2020-09-26T10:29:25","date_gmt":"2020-09-26T02:29:25","guid":{"rendered":"http:\/\/39.96.58.60\/?p=347"},"modified":"2022-10-18T16:39:49","modified_gmt":"2022-10-18T08:39:49","slug":"leetcode-1441-%e7%94%a8%e6%a0%88%e6%93%8d%e4%bd%9c%e6%9e%84%e5%bb%ba%e6%95%b0%e7%bb%84","status":"publish","type":"post","link":"http:\/\/www.yatenglg.cn\/blog\/?p=347","title":{"rendered":"Leetcode 1441. \u7528\u6808\u64cd\u4f5c\u6784\u5efa\u6570\u7ec4"},"content":{"rendered":"<p>\u7ed9\u4f60\u4e00\u4e2a\u76ee\u6807\u6570\u7ec4 <code>target<\/code> \u548c\u4e00\u4e2a\u6574\u6570 <code>n<\/code>\u3002\u6bcf\u6b21\u8fed\u4ee3\uff0c\u9700\u8981\u4ece&nbsp; <code>list = {1,2,3..., n}<\/code> \u4e2d\u4f9d\u5e8f\u8bfb\u53d6\u4e00\u4e2a\u6570\u5b57\u3002<\/p>\n<p>\u8bf7\u4f7f\u7528\u4e0b\u8ff0\u64cd\u4f5c\u6765\u6784\u5efa\u76ee\u6807\u6570\u7ec4 <code>target<\/code> \uff1a<\/p>\n<ul>\n<li><strong>Push<\/strong>\uff1a\u4ece <code>list<\/code> \u4e2d\u8bfb\u53d6\u4e00\u4e2a\u65b0\u5143\u7d20\uff0c \u5e76\u5c06\u5176\u63a8\u5165\u6570\u7ec4\u4e2d\u3002<\/li>\n<li><strong>Pop<\/strong>\uff1a\u5220\u9664\u6570\u7ec4\u4e2d\u7684\u6700\u540e\u4e00\u4e2a\u5143\u7d20\u3002<\/li>\n<li>\u5982\u679c\u76ee\u6807\u6570\u7ec4\u6784\u5efa\u5b8c\u6210\uff0c\u5c31\u505c\u6b62\u8bfb\u53d6\u66f4\u591a\u5143\u7d20\u3002<\/li>\n<\/ul>\n<p>\u9898\u76ee\u6570\u636e\u4fdd\u8bc1\u76ee\u6807\u6570\u7ec4\u4e25\u683c\u9012\u589e\uff0c\u5e76\u4e14\u53ea\u5305\u542b <code>1<\/code> \u5230 <code>n<\/code> \u4e4b\u95f4\u7684\u6570\u5b57\u3002<\/p>\n<p>\u8bf7\u8fd4\u56de\u6784\u5efa\u76ee\u6807\u6570\u7ec4\u6240\u7528\u7684\u64cd\u4f5c\u5e8f\u5217\u3002<\/p>\n<p>\u9898\u76ee\u6570\u636e\u4fdd\u8bc1\u7b54\u6848\u662f\u552f\u4e00\u7684\u3002<\/p>\n<p>&nbsp;<\/p>\n<p><strong>\u793a\u4f8b 1\uff1a<\/strong><\/p>\n<pre><strong>\u8f93\u5165\uff1a<\/strong>target = [1,3], n = 3\n\n<strong>\u8f93\u51fa\uff1a<\/strong>[\"Push\",\"Push\",\"Pop\",\"Push\"]\n\n<strong>\u89e3\u91ca\uff1a \n\n<\/strong>\u8bfb\u53d6 1 \u5e76\u81ea\u52a8\u63a8\u5165\u6570\u7ec4 -&gt; [1]\n\n\u8bfb\u53d6 2 \u5e76\u81ea\u52a8\u63a8\u5165\u6570\u7ec4\uff0c\u7136\u540e\u5220\u9664\u5b83 -&gt; [1]\n\n\u8bfb\u53d6 3 \u5e76\u81ea\u52a8\u63a8\u5165\u6570\u7ec4 -&gt; [1,3]\n\n<\/pre>\n<p><strong>\u793a\u4f8b 2\uff1a<\/strong><\/p>\n<pre><strong>\u8f93\u5165\uff1a<\/strong>target = [1,2,3], n = 3\n\n<strong>\u8f93\u51fa\uff1a<\/strong>[\"Push\",\"Push\",\"Push\"]\n\n<\/pre>\n<p><strong>\u793a\u4f8b 3\uff1a<\/strong><\/p>\n<pre><strong>\u8f93\u5165\uff1a<\/strong>target = [1,2], n = 4\n\n<strong>\u8f93\u51fa\uff1a<\/strong>[\"Push\",\"Push\"]\n\n<strong>\u89e3\u91ca\uff1a<\/strong>\u53ea\u9700\u8981\u8bfb\u53d6\u524d 2 \u4e2a\u6570\u5b57\u5c31\u53ef\u4ee5\u505c\u6b62\u3002\n\n<\/pre>\n<p><strong>\u793a\u4f8b 4\uff1a<\/strong><\/p>\n<pre><strong>\u8f93\u5165\uff1a<\/strong>target = [2,3,4], n = 4\n\n<strong>\u8f93\u51fa\uff1a<\/strong>[\"Push\",\"Pop\",\"Push\",\"Push\",\"Push\"]\n\n<\/pre>\n<p>&nbsp;<\/p>\n<p><strong>\u63d0\u793a\uff1a<\/strong><\/p>\n<ul>\n<li><code>1 &lt;= target.length &lt;= 100<\/code><\/li>\n<li><code>1 &lt;= target[i]&nbsp;&lt;= 100<\/code><\/li>\n<li><code>1 &lt;= n &lt;= 100<\/code><\/li>\n<li><code>target<\/code> \u662f\u4e25\u683c\u9012\u589e\u7684<\/li>\n<\/ul>\n<p>**\u96be\u5ea6**: Easy<\/p>\n<p>**\u6807\u7b7e**: \u6808\u3001<\/p>\n<div class=\"hcb_wrap\">\n<pre class=\"prism undefined-numbers lang-python\" data-lang=\"Python\"><code>\n# -*- coding: utf-8 -*-\n# @Author  : LG\n\n\"\"\"\n\u6267\u884c\u7528\u65f6\uff1a28 ms, \u5728\u6240\u6709 Python3 \u63d0\u4ea4\u4e2d\u51fb\u8d25\u4e8699.57% \u7684\u7528\u6237\n\u5185\u5b58\u6d88\u8017\uff1a13.4 MB, \u5728\u6240\u6709 Python3 \u63d0\u4ea4\u4e2d\u51fb\u8d25\u4e8638.43% \u7684\u7528\u6237\n\n\u89e3\u9898\u601d\u8def\uff1a\n    \u7528\u4e0b\u6807\u53bb\u67e5\u770btarget\u5143\u7d20\n    \u89c1\u4ee3\u7801\u6ce8\u91ca\n\"\"\"\nclass Solution:\n    def buildArray(self, target: List[int], n: int) -&gt; List[str]:\n        i = 0\n        N = len(target)\n        result = []\n        for num in range(1, n+1):\n            if num == target[i]:\n                i += 1\n                result.append('Push')   # \u5982\u679c\u6570\u7ec4\u4e0e\u5143\u7d20\u7b26\u5408\uff0c\u5219push,\u4e14\u5bf9\u6bd4\u4e0b\u4e00\u4e2a\u5143\u7d20\n            else:\n                result.append('Push')\n                result.append('Pop')\n                # result.extend(['Push', 'Pop'])  # \u4e0d\u7b26\u5408\uff0c\u5219push\u540epop, \u7528\u4e0b\u4e00\u4e2a\u6570\u5b57\u5bf9\u6bd4\n            if i &gt; N-1:\n                break\n        return result\n\n<\/code><\/pre>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>\u7ed9\u4f60\u4e00\u4e2a\u76ee\u6807\u6570\u7ec4 target \u548c\u4e00\u4e2a\u6574\u6570 n\u3002\u6bcf\u6b21\u8fed\u4ee3\uff0c\u9700\u8981\u4ece&nbsp; list = {1,2,3&#8230;&#8230;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[11,1],"tags":[],"_links":{"self":[{"href":"http:\/\/www.yatenglg.cn\/blog\/index.php?rest_route=\/wp\/v2\/posts\/347"}],"collection":[{"href":"http:\/\/www.yatenglg.cn\/blog\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.yatenglg.cn\/blog\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.yatenglg.cn\/blog\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/www.yatenglg.cn\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=347"}],"version-history":[{"count":1,"href":"http:\/\/www.yatenglg.cn\/blog\/index.php?rest_route=\/wp\/v2\/posts\/347\/revisions"}],"predecessor-version":[{"id":348,"href":"http:\/\/www.yatenglg.cn\/blog\/index.php?rest_route=\/wp\/v2\/posts\/347\/revisions\/348"}],"wp:attachment":[{"href":"http:\/\/www.yatenglg.cn\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=347"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.yatenglg.cn\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=347"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.yatenglg.cn\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=347"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}