{"id":41,"date":"2018-11-08T21:57:34","date_gmt":"2018-11-08T21:57:34","guid":{"rendered":"https:\/\/andybase.com\/?p=41"},"modified":"2018-11-27T14:44:07","modified_gmt":"2018-11-27T14:44:07","slug":"933-number-of-recent-calls","status":"publish","type":"post","link":"https:\/\/andybase.com\/?p=41","title":{"rendered":"933 Number of Recent Calls"},"content":{"rendered":"\n<p>link: <a href=\"https:\/\/leetcode.com\/problems\/number-of-recent-calls\/\">Number of Recent Calls<\/a><\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Thought<\/h2>\n\n\n\n<p>Question ask for numbers of calls in 3000. So sliding windows is my choice here &#8211; it will move and drop calls earlier than 3000 &#8211; which I don&#8217;t care, and keep tracing incoming calls.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Code<\/h2>\n\n\n\n<pre class=\"wp-block-syntaxhighlighter-code brush: python; notranslate\">class RecentCounter:\n\n    def __init__(self):\n        self.t = collections.deque()\n        self.cnt = 0\n\n    def ping(self, t):\n        \"\"\"\n        :type t: int\n        :rtype: int\n        \"\"\"\n        while self.t and self.t[0] &lt; t - 3000:\n            self.t.popleft()\n            self.cnt -= 1\n        self.t.append(t)\n        self.cnt += 1\n        return self.cnt<\/pre>\n\n\n\n<h2 class=\"wp-block-heading\">Runtime<\/h2>\n\n\n\n<p>Time: O(n)<br>Space: O(n)<\/p>\n","protected":false},"excerpt":{"rendered":"<p>link: Number of Recent Calls Thought Question ask for numbers of calls in 3000. So sliding windows is my choice [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"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,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":false,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"enabled":false},"version":2}},"categories":[2],"tags":[4,3],"class_list":["post-41","post","type-post","status-publish","format-standard","hentry","category-leetcode","tag-contest","tag-leetcode"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"jetpack_shortlink":"https:\/\/wp.me\/paWPni-F","_links":{"self":[{"href":"https:\/\/andybase.com\/index.php?rest_route=\/wp\/v2\/posts\/41","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/andybase.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/andybase.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/andybase.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/andybase.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=41"}],"version-history":[{"count":2,"href":"https:\/\/andybase.com\/index.php?rest_route=\/wp\/v2\/posts\/41\/revisions"}],"predecessor-version":[{"id":83,"href":"https:\/\/andybase.com\/index.php?rest_route=\/wp\/v2\/posts\/41\/revisions\/83"}],"wp:attachment":[{"href":"https:\/\/andybase.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=41"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/andybase.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=41"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/andybase.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=41"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}