{"id":665,"date":"2020-09-26T11:08:44","date_gmt":"2020-09-26T03:08:44","guid":{"rendered":"http:\/\/39.96.58.60\/?p=665"},"modified":"2022-10-18T16:38:24","modified_gmt":"2022-10-18T08:38:24","slug":"leetcode-1291-%e9%a1%ba%e6%ac%a1%e6%95%b0","status":"publish","type":"post","link":"https:\/\/www.yatenglg.cn\/blog\/?p=665","title":{"rendered":"Leetcode 1291. \u987a\u6b21\u6570"},"content":{"rendered":"<p>\u6211\u4eec\u5b9a\u4e49\u300c\u987a\u6b21\u6570\u300d\u4e3a\uff1a\u6bcf\u4e00\u4f4d\u4e0a\u7684\u6570\u5b57\u90fd\u6bd4\u524d\u4e00\u4f4d\u4e0a\u7684\u6570\u5b57\u5927 <code>1<\/code> \u7684\u6574\u6570\u3002<\/p>\n<p>\u8bf7\u4f60\u8fd4\u56de\u7531&nbsp;<code>[low, high]<\/code>&nbsp;\u8303\u56f4\u5185\u6240\u6709\u987a\u6b21\u6570\u7ec4\u6210\u7684 <strong>\u6709\u5e8f<\/strong> \u5217\u8868\uff08\u4ece\u5c0f\u5230\u5927\u6392\u5e8f\uff09\u3002<\/p>\n<p>&nbsp;<\/p>\n<p><strong>\u793a\u4f8b 1\uff1a<\/strong><\/p>\n<pre><strong>\u8f93\u51fa\uff1a<\/strong>low = 100, high = 300\n\n<strong>\u8f93\u51fa\uff1a<\/strong>[123,234]\n\n<\/pre>\n<p><strong>\u793a\u4f8b 2\uff1a<\/strong><\/p>\n<pre><strong>\u8f93\u51fa\uff1a<\/strong>low = 1000, high = 13000\n\n<strong>\u8f93\u51fa\uff1a<\/strong>[1234,2345,3456,4567,5678,6789,12345]\n\n<\/pre>\n<p>&nbsp;<\/p>\n<p><strong>\u63d0\u793a\uff1a<\/strong><\/p>\n<ul>\n<li><code>10 &lt;= low &lt;= high &lt;= 10^9<\/code><\/li>\n<\/ul>\n<p>**\u96be\u5ea6**: Medium<\/p>\n<p>**\u6807\u7b7e**: \u56de\u6eaf\u7b97\u6cd5\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\uff1a20 ms, \u5728\u6240\u6709 Python3 \u63d0\u4ea4\u4e2d\u51fb\u8d25\u4e8698.96% \u7684\u7528\u6237\n\u5185\u5b58\u6d88\u8017\uff1a13.3 MB, \u5728\u6240\u6709 Python3 \u63d0\u4ea4\u4e2d\u51fb\u8d25\u4e8673.87% \u7684\u7528\u6237\n\n\u89e3\u9898\u601d\u8def\uff1a\n    \u56de\u6eaf\n    \u4e00\u6b21\u4ee51~9\u5f00\u5934\uff0c\u67e5\u770b\u7b26\u5408\u8981\u6c42\u7684\u6570\u5b57\n\"\"\"\nclass Solution:\n    def sequentialDigits(self, low: int, high: int) -&gt; List[int]:\n        result = []\n        def backtract(now, current):    # \u4ee5now\u5f00\u5934\uff0c current\u8bb0\u5f55\u5f53\u524d\u6570\u5b57\n            if low &lt;= current &lt;= high:  # \u7b26\u5408\u9898\u610f\uff0c\u6dfb\u52a0\u5230\u6700\u7ec8\u7ed3\u679c\n                result.append(current)\n            if now &gt;= 9 or current &gt; high:\n                return\n            backtract(now+1, current*10+now+1)\n\n        for i in range(1, 10):  # \u4ee51~9\u4f9d\u6b21\u4f5c\u4e3a\u5f00\u5934\n            backtract(i, i)\n        result.sort()\n        return result<\/code><\/pre>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>\u6211\u4eec\u5b9a\u4e49\u300c\u987a\u6b21\u6570\u300d\u4e3a\uff1a\u6bcf\u4e00\u4f4d\u4e0a\u7684\u6570\u5b57\u90fd\u6bd4\u524d\u4e00\u4f4d\u4e0a\u7684\u6570\u5b57\u5927 1 \u7684\u6574\u6570\u3002 \u8bf7\u4f60\u8fd4\u56de\u7531&nbsp;[low, hi&#8230;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":[],"categories":[11,1],"tags":[],"_links":{"self":[{"href":"https:\/\/www.yatenglg.cn\/blog\/index.php?rest_route=\/wp\/v2\/posts\/665"}],"collection":[{"href":"https:\/\/www.yatenglg.cn\/blog\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.yatenglg.cn\/blog\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.yatenglg.cn\/blog\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.yatenglg.cn\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=665"}],"version-history":[{"count":1,"href":"https:\/\/www.yatenglg.cn\/blog\/index.php?rest_route=\/wp\/v2\/posts\/665\/revisions"}],"predecessor-version":[{"id":666,"href":"https:\/\/www.yatenglg.cn\/blog\/index.php?rest_route=\/wp\/v2\/posts\/665\/revisions\/666"}],"wp:attachment":[{"href":"https:\/\/www.yatenglg.cn\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=665"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.yatenglg.cn\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=665"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.yatenglg.cn\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=665"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}