{"id":127,"date":"2017-02-16T11:24:39","date_gmt":"2017-02-16T11:24:39","guid":{"rendered":"http:\/\/www.luo666.com\/?p=127"},"modified":"2019-01-19T04:43:54","modified_gmt":"2019-01-19T04:43:54","slug":"topcoder-zigzag","status":"publish","type":"post","link":"http:\/\/www.luo666.com\/?p=127","title":{"rendered":"topcoder: ZigZag"},"content":{"rendered":"<p>\u518d\u6765\u6c34\u4e00\u9053\u7b80\u5355\u9898\uff1a<a href=\"https:\/\/arena.topcoder.com\/#\/u\/practiceCode\/1239\/1209\/1259\/1\/1239\">\u9898\u76ee\u5730\u5740<\/a><\/p>\n<p>\u60f3\u6cd5\u5f88\u81ea\u7136\uff0c\u8bb0\u5f55\u4e0b\u5f53\u524d\u7684\u65b9\u5411\uff0c\u4e00\u65e6\u51fa\u73b0\u65b9\u5411\u4e0d\u4e00\u81f4\u7684\u5c31\u628a\u603b\u6570\u52a0\u4e00\uff0c\u540c\u65f6\u65b9\u5411\u6539\u53d8\uff0c\u5426\u5219continue\uff0c\u7136\u800c\u5176\u5b9e\u5df2\u7ecf\u5305\u542b\u4e86\u52a8\u6001\u89c4\u5212\u601d\u60f3<\/p>\n<p>\u4e0a\u4ee3\u7801\uff1a<\/p>\n<pre class=\"lang:default decode:true\">class ZigZag:\n    def longestZigZag(self, seq):\n        count = 1\n        d = 0\n        p = seq[0]\n        for i in seq[1:]:\n            if p == i:\n                continue\n            elif p &lt; i:\n                if d == 1:\n                    p = i\n                    continue\n                else:\n                    count += 1\n                d = 1\n            else:\n                if d == -1:\n                    p = i\n                    continue\n                else:\n                    count += 1\n                d = -1\n            p = i\n\n        return count<\/pre>\n<p>\u770b\u4e86\u4e0b\u522b\u4eba\u63d0\u4ea4\u7684\uff0c\u601d\u8def\u4e00\u6837\uff0c\u53ea\u4e0d\u8fc7\u6709\u4eba\u4e0a\u6765\u5148\u628a\u6574\u4e2a\u5e8f\u5217\u7684\u53d8\u5316\u8d8b\u52bf\u7b97\u4e00\u904d\uff0c\u5373\u904d\u5386seq\uff0c\u7136\u540e\u7b97\u51faseq[i]-seq[i-1]\u7684\u503c\u8bb0\u5f55\u4e0b\u6765\u8bb0\u4e3aV[i]\uff0c\u5176\u5b9e\u8981\u7684\u5c31\u662f\u4e00\u4e2a\u6b63\u8d1f\u53f7\uff0c\u7136\u540e\u518d\u6b21\u904d\u5386\u8fd8\u662f\u8bb0\u5f55\u5f53\u524d\u7684\u65b9\u5411\uff0c\u4e58\u4ee5\u5f53\u524d\u904d\u5386\u5230\u7684\u90a3\u4e2a\u8d8b\u52bfV[i]\uff0c\u4e58\u79ef\u53d1\u751f\u53d8\u5316\u65f6\u5c31\u5728\u7ed3\u679c\u4e0a\u52a0\u4e00\u5e76\u6539\u53d8\u5f53\u524d\u65b9\u5411\u503c\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u518d\u6765\u6c34\u4e00\u9053\u7b80\u5355\u9898\uff1a\u9898\u76ee\u5730\u5740 \u60f3\u6cd5\u5f88\u81ea\u7136\uff0c\u8bb0\u5f55\u4e0b\u5f53\u524d\u7684\u65b9\u5411\uff0c\u4e00\u65e6\u51fa\u73b0\u65b9\u5411\u4e0d\u4e00\u81f4\u7684\u5c31\u628a\u603b\u6570\u52a0\u4e00\uff0c\u540c\u65f6\u65b9\u5411\u6539\u53d8\uff0c\u5426\u5219continue\uff0c\u7136\u800c\u5176\u5b9e\u5df2\u7ecf\u5305\u542b\u4e86\u52a8\u6001\u89c4\u5212\u601d\u60f3 \u4e0a\u4ee3\u7801\uff1a class ZigZag: def longestZigZag(self, seq): count = 1 d = 0 p = seq[0] for i in seq[1:]: if p == i: continue elif p &lt; i: if d == 1: p = i continue else: count += 1 d = 1 else: if d == -1: p = i continue else: &hellip; <a href=\"http:\/\/www.luo666.com\/?p=127\" class=\"more-link\">Continue reading<span class=\"screen-reader-text\"> &#8220;topcoder: ZigZag&#8221;<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"jetpack_post_was_ever_published":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"footnotes":"","_jetpack_memberships_contains_paid_content":false,"jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","enabled":false}}},"categories":[2],"tags":[],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"jetpack_shortlink":"https:\/\/wp.me\/p7Dhki-23","jetpack-related-posts":[],"_links":{"self":[{"href":"http:\/\/www.luo666.com\/index.php?rest_route=\/wp\/v2\/posts\/127"}],"collection":[{"href":"http:\/\/www.luo666.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.luo666.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.luo666.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/www.luo666.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=127"}],"version-history":[{"count":1,"href":"http:\/\/www.luo666.com\/index.php?rest_route=\/wp\/v2\/posts\/127\/revisions"}],"predecessor-version":[{"id":128,"href":"http:\/\/www.luo666.com\/index.php?rest_route=\/wp\/v2\/posts\/127\/revisions\/128"}],"wp:attachment":[{"href":"http:\/\/www.luo666.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=127"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.luo666.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=127"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.luo666.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=127"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}