{"id":21146,"date":"2023-02-13T09:38:52","date_gmt":"2023-02-13T09:38:52","guid":{"rendered":"https:\/\/www.booksofall.com\/tw\/?post_type=product&#038;p=21146"},"modified":"2023-02-13T09:39:19","modified_gmt":"2023-02-13T09:39:19","slug":"open-data-structures-in-java-2","status":"publish","type":"product","link":"https:\/\/www.booksofall.com\/tw\/open-data-structures-in-java-2\/","title":{"rendered":"Open Data Structures (in Java)"},"content":{"rendered":"<p>Every computer science curriculum in the world includes a course on data structures and <a href=\"https:\/\/en.wikipedia.org\/wiki\/Algorithm\">algorithms<\/a>. <a href=\"https:\/\/www.geeksforgeeks.org\/data-structures\/\">Data structures<\/a> are that important; they improve our quality of life and even save lives on a regular basis. Many multi-million and several multi-billion dollar companies have been built around data structures.<\/p>\n<p>How can this be? If we stop to think about it, we realize that we interact with data structures constantly.<\/p>\n<ul>\n<li>Open a file: File system<a href=\"https:\/\/www.techtarget.com\/searchdatamanagement\/definition\/data-structure\"> data structures<\/a> are used to locate the parts of that file on disk so they can be retrieved. This isn\u2019t easy; disks contain hundreds of millions of blocks. The contents of your file could be stored on any one of them.<\/li>\n<li>Look up a contact on your phone: A data structure is used to look up a phone number in your contact list based on partial information even before you finish dialing\/typing. This isn\u2019t easy; your phone may contain information about a lot of people\u2014everyone you have ever contacted via phone or email\u2014and your phone doesn\u2019t have a very fast processor or a lot of memory.<\/li>\n<li>Log in to your favorite social network: The network servers use your login information to look up your account information. This isn\u2019t easy; the most <a href=\"https:\/\/www.adobe.com\/express\/learn\/blog\/top-social-media-sites\">popular social networks<\/a> have hundreds of millions of active users.<\/li>\n<li>Do a <a href=\"https:\/\/courses.lumenlearning.com\/wm-compapp\/chapter\/web-searching\/\">web search<\/a>: The search engine uses data structures to find the web pages containing your search terms. This isn\u2019t easy; there are over 8.5 billion web pages on the Internet and each page contains a lot of potential search terms.<\/li>\n<li>Phone emergency services (9-1-1): The <a href=\"https:\/\/en.wikipedia.org\/wiki\/Emergency_Services_Network\">emergency services network<\/a> looks up your phone number in a data structure that maps phone numbers to addresses so that police cars, ambulances, or fire trucks can be sent there without delay. This is important; the person making the call may not be able to provide the exact address they are calling from and a delay can mean the difference between life or death.<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p><iframe frameborder=\"0\" allowtransparency=\"true\" allowFullscreen=\"true\" style=\"width: 100%; height: 700px; border: none;\" src=\"https:\/\/online.visual-paradigm.com\/share\/book\/ods-java-198jt8y17a?enforceShowPromotionBar=true&#038;p=1\"><\/iframe><\/p>\n","protected":false},"featured_media":21150,"template":"","meta":{"_yoast_wpseo_title":"","_yoast_wpseo_metadesc":""},"product_brand":[],"product_cat":[276],"product_tag":[],"class_list":{"0":"post-21146","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-java","8":"first","9":"instock","10":"shipping-taxable","11":"product-type-simple"},"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.1.1 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Open Data Structures (in Java) - BooksOfAll Traditional Chinese<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.booksofall.com\/tw\/open-data-structures-in-java-2\/\" \/>\n<meta property=\"og:locale\" content=\"zh_TW\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Open Data Structures (in Java) - BooksOfAll Traditional Chinese\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.booksofall.com\/tw\/open-data-structures-in-java-2\/\" \/>\n<meta property=\"og:site_name\" content=\"BooksOfAll Traditional Chinese\" \/>\n<meta property=\"article:modified_time\" content=\"2023-02-13T09:39:19+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.booksofall.com\/tw\/wp-content\/uploads\/sites\/3\/2023\/02\/img_63ea020dc7468.png\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:image\" content=\"https:\/\/www.booksofall.com\/tw\/wp-content\/uploads\/sites\/3\/2023\/02\/img_63ea020dc7468.png\" \/>\n<meta name=\"twitter:label1\" content=\"\u9810\u4f30\u95b1\u8b80\u6642\u9593\" \/>\n\t<meta name=\"twitter:data1\" content=\"2 \u5206\u9418\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.booksofall.com\/tw\/open-data-structures-in-java-2\/\",\"url\":\"https:\/\/www.booksofall.com\/tw\/open-data-structures-in-java-2\/\",\"name\":\"Open Data Structures (in Java) - 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