{"id":836,"date":"2020-12-11T12:00:50","date_gmt":"2020-12-11T04:00:50","guid":{"rendered":"http:\/\/39.96.58.60\/?p=836"},"modified":"2022-10-18T16:37:12","modified_gmt":"2022-10-18T08:37:12","slug":"leetcode-714-%e4%b9%b0%e5%8d%96%e8%82%a1%e7%a5%a8%e7%9a%84%e6%9c%80%e4%bd%b3%e6%97%b6%e6%9c%ba%e5%90%ab%e6%89%8b%e7%bb%ad%e8%b4%b9","status":"publish","type":"post","link":"http:\/\/www.yatenglg.cn\/blog\/?p=836","title":{"rendered":"Leetcode 714. \u4e70\u5356\u80a1\u7968\u7684\u6700\u4f73\u65f6\u673a\u542b\u624b\u7eed\u8d39"},"content":{"rendered":"<p>\u7ed9\u5b9a\u4e00\u4e2a\u6574\u6570\u6570\u7ec4&nbsp;<code>prices<\/code>\uff0c\u5176\u4e2d\u7b2c&nbsp;<code>i<\/code>&nbsp;\u4e2a\u5143\u7d20\u4ee3\u8868\u4e86\u7b2c&nbsp;<code>i<\/code>&nbsp;\u5929\u7684\u80a1\u7968\u4ef7\u683c \uff1b\u975e\u8d1f\u6574\u6570&nbsp;<code>fee<\/code> \u4ee3\u8868\u4e86\u4ea4\u6613\u80a1\u7968\u7684\u624b\u7eed\u8d39\u7528\u3002<\/p>\n<p>\u4f60\u53ef\u4ee5\u65e0\u9650\u6b21\u5730\u5b8c\u6210\u4ea4\u6613\uff0c\u4f46\u662f\u4f60\u6bcf\u7b14\u4ea4\u6613\u90fd\u9700\u8981\u4ed8\u624b\u7eed\u8d39\u3002\u5982\u679c\u4f60\u5df2\u7ecf\u8d2d\u4e70\u4e86\u4e00\u4e2a\u80a1\u7968\uff0c\u5728\u5356\u51fa\u5b83\u4e4b\u524d\u4f60\u5c31\u4e0d\u80fd\u518d\u7ee7\u7eed\u8d2d\u4e70\u80a1\u7968\u4e86\u3002<\/p>\n<p>\u8fd4\u56de\u83b7\u5f97\u5229\u6da6\u7684\u6700\u5927\u503c\u3002<\/p>\n<p><strong>\u6ce8\u610f\uff1a<\/strong>\u8fd9\u91cc\u7684\u4e00\u7b14\u4ea4\u6613\u6307\u4e70\u5165\u6301\u6709\u5e76\u5356\u51fa\u80a1\u7968\u7684\u6574\u4e2a\u8fc7\u7a0b\uff0c\u6bcf\u7b14\u4ea4\u6613\u4f60\u53ea\u9700\u8981\u4e3a\u652f\u4ed8\u4e00\u6b21\u624b\u7eed\u8d39\u3002<\/p>\n<p><strong>\u793a\u4f8b 1:<\/strong><\/p>\n<pre><strong>\u8f93\u5165:<\/strong> prices = [1, 3, 2, 8, 4, 9], fee = 2\n\n<strong>\u8f93\u51fa:<\/strong> 8\n\n<strong>\u89e3\u91ca:<\/strong> \u80fd\u591f\u8fbe\u5230\u7684\u6700\u5927\u5229\u6da6:  \n\n\u5728\u6b64\u5904\u4e70\u5165&nbsp;prices[0] = 1\n\n\u5728\u6b64\u5904\u5356\u51fa prices[3] = 8\n\n\u5728\u6b64\u5904\u4e70\u5165 prices[4] = 4\n\n\u5728\u6b64\u5904\u5356\u51fa prices[5] = 9\n\n\u603b\u5229\u6da6:&nbsp;((8 - 1) - 2) + ((9 - 4) - 2) = 8.<\/pre>\n<p><strong>\u6ce8\u610f:<\/strong><\/p>\n<ul>\n<li><code>0 &lt; prices.length &lt;= 50000<\/code>.<\/li>\n<li><code>0 &lt; prices[i] &lt; 50000<\/code>.<\/li>\n<li><code>0 &lt;= fee &lt; 50000<\/code>.<\/li>\n<\/ul>\n<p>**\u96be\u5ea6**: Medium<\/p>\n<p>**\u6807\u7b7e**: \u8d2a\u5fc3\u7b97\u6cd5\u3001 \u6570\u7ec4\u3001 \u52a8\u6001\u89c4\u5212\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\uff1a776 ms, \u5728\u6240\u6709 Python3 \u63d0\u4ea4\u4e2d\u51fb\u8d25\u4e8695.38% \u7684\u7528\u6237\n\u5185\u5b58\u6d88\u8017\uff1a20.3 MB, \u5728\u6240\u6709 Python3 \u63d0\u4ea4\u4e2d\u51fb\u8d25\u4e8681.13% \u7684\u7528\u6237\n\n\u89e3\u9898\u601d\u8def\uff1a\n    \u5177\u4f53\u5b9e\u73b0\u89c1\u4ee3\u7801\u6ce8\u91ca\n    \u53c2\u8003\u4e86\uff1ahttps:\/\/leetcode-cn.com\/problems\/best-time-to-buy-and-sell-stock-with-transaction-fee\/solution\/mai-mai-gu-piao-de-zui-jia-shi-ji-han-shou-xu-fei-\/\n\"\"\"\nclass Solution:\n    def maxProfit(self, prices: List[int], fee: int) -&gt; int:\n        result = 0\n        hold = -prices[0]   # \u6301\u6709\u80a1\u7968\uff0c\u9700\u8981\u82b1\u591a\u94b1\n        for i in range(1, len(prices)):\n            result = max(result, prices[i] + hold - fee)    # \u7b2ci\u5929\u5356\u51fa\u7684\u91d1\u94b1\uff0c\u662f\u524d\u4e00\u5929\u6301\u6709\u80a1\u7968\u5356\u51fa\u7684\u6536\u76ca\u4e0e\u5f53\u524d\u6301\u6709\u91d1\u94b1\u7684\u6700\u5927\u503c\n            hold = max(hold, result-prices[i])  # \u53ef\u4ee5\u4e70\u5165\u4eca\u5929\u7684\u80a1\u7968\uff0c\u6216\u8005\u4e0d\u4e0d\u53d8\n        return result\n<\/code><\/pre>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>\u7ed9\u5b9a\u4e00\u4e2a\u6574\u6570\u6570\u7ec4&nbsp;prices\uff0c\u5176\u4e2d\u7b2c&nbsp;i&nbsp;\u4e2a\u5143\u7d20\u4ee3\u8868\u4e86\u7b2c&nbsp;i&#038;nbs&#8230;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[11],"tags":[],"_links":{"self":[{"href":"http:\/\/www.yatenglg.cn\/blog\/index.php?rest_route=\/wp\/v2\/posts\/836"}],"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=836"}],"version-history":[{"count":1,"href":"http:\/\/www.yatenglg.cn\/blog\/index.php?rest_route=\/wp\/v2\/posts\/836\/revisions"}],"predecessor-version":[{"id":837,"href":"http:\/\/www.yatenglg.cn\/blog\/index.php?rest_route=\/wp\/v2\/posts\/836\/revisions\/837"}],"wp:attachment":[{"href":"http:\/\/www.yatenglg.cn\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=836"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.yatenglg.cn\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=836"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.yatenglg.cn\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=836"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}