{"id":1015,"date":"2025-12-23T06:42:36","date_gmt":"2025-12-22T22:42:36","guid":{"rendered":"https:\/\/www.guanhaobo.cn\/?p=1015"},"modified":"2025-12-23T06:42:36","modified_gmt":"2025-12-22T22:42:36","slug":"leetcode-901-%e8%82%a1%e7%a5%a8%e4%bb%b7%e6%a0%bc%e8%b7%a8%e5%ba%a6","status":"publish","type":"post","link":"https:\/\/www.guanhaobo.cn\/?p=1015","title":{"rendered":"LeetCode 901 \u2013 \u80a1\u7968\u4ef7\u683c\u8de8\u5ea6"},"content":{"rendered":"

\u9898\u76ee\u63cf\u8ff0<\/h1>\n

\u8bbe\u8ba1\u4e00\u4e2a\u7b97\u6cd5\u6536\u96c6\u67d0\u4e9b\u80a1\u7968\u7684\u6bcf\u65e5\u62a5\u4ef7\uff0c\u5e76\u8fd4\u56de\u8be5\u80a1\u7968\u5f53\u65e5\u4ef7\u683c\u7684 \u8de8\u5ea6 \u3002
\n\u5f53\u65e5\u80a1\u7968\u4ef7\u683c\u7684 \u8de8\u5ea6 \u88ab\u5b9a\u4e49\u4e3a\u80a1\u7968\u4ef7\u683c\u5c0f\u4e8e\u6216\u7b49\u4e8e\u4eca\u5929\u4ef7\u683c\u7684\u6700\u5927\u8fde\u7eed\u65e5\u6570\uff08\u4ece\u4eca\u5929\u5f00\u59cb\u5f80\u56de\u6570\uff0c\u5305\u62ec\u4eca\u5929\uff09\u3002
\n\u4f8b\u5982\uff0c\u5982\u679c\u672a\u6765 7 \u5929\u80a1\u7968\u7684\u4ef7\u683c\u662f [100,80,60,70,60,75,85]\uff0c\u90a3\u4e48\u80a1\u7968\u8de8\u5ea6\u5c06\u662f [1,1,1,2,1,4,6] \u3002
\n\u5b9e\u73b0 StockSpanner \u7c7b\uff1a
\nStockSpanner() \u521d\u59cb\u5316\u7c7b\u5bf9\u8c61\u3002
\nint next(int price) \u7ed9\u51fa\u4eca\u5929\u7684\u80a1\u4ef7 price \uff0c\u8fd4\u56de\u8be5\u80a1\u7968\u5f53\u65e5\u4ef7\u683c\u7684 \u8de8\u5ea6 \u3002<\/p>\n

\u793a\u4f8b\uff1a
\n\u8f93\u5165\uff1a
\n[“StockSpanner”, “next”, “next”, “next”, “next”, “next”, “next”, “next”]
\n[[], [100], [80], [60], [70], [60], [75], [85]]
\n\u8f93\u51fa\uff1a
\n[null, 1, 1, 1, 2, 1, 4, 6]<\/p>\n

\u9898\u76ee\u5206\u6790<\/h1>\n

\u5355\u8c03\u6808\uff0c\u4ece\u5e95\u5230\u9876\u9010\u6e10\u9012\u51cf\u3002
\n\u5728\u5165\u6808\u524d\uff0c\u8ba9\u6808\u4e2d\u6240\u6709\u5c0f\u4e8e\u7b49\u4e8e\u5f53\u524d\u503c\u7684\u5143\u7d20\u51fa\u6808\uff0c\u7136\u540e\u6808\u9876\u503c\u7684\u4e0b\u6807\u5c31\u662f\u5de6\u4fa7\u7b2c\u4e00\u4e2a\u5927\u4e8e\u5f53\u524d\u503c\u7684\u4f4d\u7f6e\uff0c\u4ece\u800c\u8ba1\u7b97\u51fa\u8de8\u5ea6\u3002
\n\u53ef\u4ee5\u5728\u6700\u5de6\u4fa7\u589e\u52a0\u4e00\u4e2a Int.MAX_VALUE\uff0c\u7528\u4e8e\u5904\u7406\u6808\u5e95\u4e3a\u7a7a\u7684\u60c5\u51b5\u3002
\n\u6808\u4e2d\u5b9e\u9645\u5b58\u50a8\u7684\u662f\u4e0b\u6807\uff0c\u800c\u4e0d\u662f\u5177\u4f53\u503c\u3002<\/p>\n

Java<\/h1>\n
private List<Integer> list = new ArrayList<>();\nprivate Deque<Integer> stack = new LinkedList<>();\n\npublic StockSpanner() {\n    \/\/ \u589e\u52a0\u54e8\u5175\n    list.add(Integer.MAX_VALUE);\n    stack.add(0);\n}\n\npublic int next(int price) {\n    int ans = 0;\n    while (!stack.isEmpty() && list.get(stack.peek()) <= price) {\n        stack.pop();\n        ans = list.size() - stack.peek() - 1;\n    }\n    stack.push(list.size());\n    list.add(price);\n    return ans + 1;\n}\n<\/code><\/pre>\n
Kotlin<\/h1>\n
private val list = ArrayList<Int>().apply {\n    add(Int.MAX_VALUE)\n}\nprivate val stack = LinkedList<Int>().apply {\n    push(0)\n}\n\nfun next(price: Int): Int {\n    var ans = 0\n    while (stack.isNotEmpty() && list[stack.peek()] <= price) {\n        stack.pop()\n        ans = list.size - stack.peek() - 1\n    }\n    stack.push(list.size)\n    list.add(price)\n    return ans + 1\n}\n<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"
\u9898\u76ee\u63cf\u8ff0 \u8bbe\u8ba1\u4e00\u4e2a\u7b97\u6cd5\u6536\u96c6\u67d0\u4e9b\u80a1\u7968\u7684\u6bcf\u65e5\u62a5\u4ef7\uff0c\u5e76\u8fd4\u56de\u8be5\u80a1\u7968\u5f53\u65e5\u4ef7\u683c\u7684 \u8de8\u5ea6 \u3002 \u5f53\u65e5\u80a1\u7968\u4ef7\u683c\u7684 \u8de8\u5ea6 \u88ab\u5b9a\u4e49\u4e3a […]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[5],"tags":[20,76],"class_list":["post-1015","post","type-post","status-publish","format-standard","hentry","category-algo","tag-leetcode","tag-76"],"_links":{"self":[{"href":"https:\/\/www.guanhaobo.cn\/index.php?rest_route=\/wp\/v2\/posts\/1015","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.guanhaobo.cn\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.guanhaobo.cn\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.guanhaobo.cn\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.guanhaobo.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1015"}],"version-history":[{"count":1,"href":"https:\/\/www.guanhaobo.cn\/index.php?rest_route=\/wp\/v2\/posts\/1015\/revisions"}],"predecessor-version":[{"id":1016,"href":"https:\/\/www.guanhaobo.cn\/index.php?rest_route=\/wp\/v2\/posts\/1015\/revisions\/1016"}],"wp:attachment":[{"href":"https:\/\/www.guanhaobo.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1015"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.guanhaobo.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1015"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.guanhaobo.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1015"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}