{"id":62,"date":"2026-01-10T19:26:51","date_gmt":"2026-01-10T16:26:51","guid":{"rendered":"https:\/\/blogs.e-me-4all.eu\/tsilispyr\/?page_id=62"},"modified":"2026-01-10T19:27:05","modified_gmt":"2026-01-10T16:27:05","slug":"%ce%b7-%cf%83%cf%84%ce%bf%ce%af%ce%b2%ce%b1-stack","status":"publish","type":"page","link":"https:\/\/blogs.e-me-4all.eu\/tsilispyr\/%ce%b7-%cf%83%cf%84%ce%bf%ce%af%ce%b2%ce%b1-stack\/","title":{"rendered":"\u0397 \u03a3\u03c4\u03bf\u03af\u03b2\u03b1 (Stack)"},"content":{"rendered":"<div style=\"font-family: 'Segoe UI', Arial, sans-serif;line-height: 1.8;color: #2c3e50\">\n<h1 style=\"background-color: #34495e;color: white;padding: 20px;border-radius: 8px;text-align: center\">\u039c\u03ac\u03b8\u03b7\u03bc\u03b1 1: \u0397 \u03a3\u03c4\u03bf\u03af\u03b2\u03b1 (Stack)<\/h1>\n<p><strong> \u0394\u03b9\u03ac\u03c1\u03ba\u03b5\u03b9\u03b1:<\/strong> 45 \u039b\u03b5\u03c0\u03c4\u03ac<br \/>\n<strong> \u03a0\u03b7\u03b3\u03ae:<\/strong> \u03a3\u03c5\u03bc\u03c0\u03bb\u03b7\u03c1\u03c9\u03bc\u03b1\u03c4\u03b9\u03ba\u03cc \u03a5\u03bb\u03b9\u03ba\u03cc, \u039a\u03b5\u03c6\u03ac\u03bb\u03b1\u03b9\u03bf \u0394\u03bf\u03bc\u03ad\u03c2 \u0394\u03b5\u03b4\u03bf\u03bc\u03ad\u03bd\u03c9\u03bd<\/p>\n<div style=\"background-color: #ecf0f1;padding: 15px;border-left: 5px solid #e67e22;margin: 20px 0\">\n<h3>\u0395\u03b9\u03c3\u03b1\u03b3\u03c9\u03b3\u03ae<\/h3>\n<p>\u0394\u03b5\u03af\u03c4\u03b5 \u03c4\u03bf \u03c0\u03b1\u03c1\u03b1\u03ba\u03ac\u03c4\u03c9 \u03b2\u03af\u03bd\u03c4\u03b5\u03bf \u03b3\u03b9\u03b1 \u03bd\u03b1 \u03ba\u03b1\u03c4\u03b1\u03bb\u03ac\u03b2\u03b5\u03c4\u03b5 \u03c0\u03ce\u03c2 \u03bb\u03b5\u03b9\u03c4\u03bf\u03c5\u03c1\u03b3\u03b5\u03af \u03b7 \"\u03b1\u03bd\u03ac\u03ba\u03bb\u03b7\u03c3\u03b7\" \u03b5\u03bd\u03b5\u03c1\u03b3\u03b5\u03b9\u03ce\u03bd (Undo) \u03c3\u03c4\u03bf\u03bd \u03c5\u03c0\u03bf\u03bb\u03bf\u03b3\u03b9\u03c3\u03c4\u03ae \u03c3\u03b1\u03c2.<\/p>\n<div style=\"background: #000;color: #fff;padding: 20px;text-align: center;border-radius: 5px\"><iframe allow=\"microphone https:\/\/content.e-me-4all.eu\" src=\"https:\/\/content.e-me-4all.eu\/wp-admin\/admin-ajax.php?action=h5p_embed&id=[eme_content_id 111266]\" frameborder=\"0\" allowfullscreen=\"allowfullscreen\" onload=\"iFrameResize({heightCalculationMethod:'max'})\"><\/iframe><\/div>\n<\/div>\n<h2 style=\"color: #e67e22;border-bottom: 2px solid #e67e22\">1. \u03a4\u03b9 \u03b5\u03af\u03bd\u03b1\u03b9 \u03b7 \u03a3\u03c4\u03bf\u03af\u03b2\u03b1;<\/h2>\n<p>\u0397 \u03a3\u03c4\u03bf\u03af\u03b2\u03b1 \u03b5\u03af\u03bd\u03b1\u03b9 \u03bc\u03b9\u03b1 \u03b3\u03c1\u03b1\u03bc\u03bc\u03b9\u03ba\u03ae \u03b4\u03bf\u03bc\u03ae \u03b4\u03b5\u03b4\u03bf\u03bc\u03ad\u03bd\u03c9\u03bd. \u03a6\u03b1\u03bd\u03c4\u03b1\u03c3\u03c4\u03b5\u03af\u03c4\u03b5 \u03c4\u03b7\u03bd \u03c3\u03b1\u03bd \u03bc\u03b9\u03b1 \u03c3\u03c4\u03bf\u03af\u03b2\u03b1 \u03c0\u03b9\u03ac\u03c4\u03c9\u03bd: <strong>\u039c\u03c0\u03bf\u03c1\u03bf\u03cd\u03bc\u03b5 \u03bd\u03b1 \u03c0\u03c1\u03bf\u03c3\u03b8\u03ad\u03c3\u03bf\u03c5\u03bc\u03b5 \u03ae \u03bd\u03b1 \u03b1\u03c6\u03b1\u03b9\u03c1\u03ad\u03c3\u03bf\u03c5\u03bc\u03b5 \u03c3\u03c4\u03bf\u03b9\u03c7\u03b5\u03af\u03b1 \u03bc\u03cc\u03bd\u03bf \u03b1\u03c0\u03cc \u03c4\u03b7\u03bd \u03ba\u03bf\u03c1\u03c5\u03c6\u03ae.<\/strong><\/p>\n<ul>\n<li><strong>LIFO (Last In, First Out):<\/strong> \u03a4\u03bf \u03c3\u03c4\u03bf\u03b9\u03c7\u03b5\u03af\u03bf \u03c0\u03bf\u03c5 \u03bc\u03c0\u03b1\u03af\u03bd\u03b5\u03b9 \u03c4\u03b5\u03bb\u03b5\u03c5\u03c4\u03b1\u03af\u03bf, \u03b2\u03b3\u03b1\u03af\u03bd\u03b5\u03b9 \u03c0\u03c1\u03ce\u03c4\u03bf.<\/li>\n<li><strong>\u0394\u03b5\u03af\u03ba\u03c4\u03b7\u03c2 \u039a\u03bf\u03c1\u03c5\u03c6\u03ae\u03c2 (Top):<\/strong> \u039c\u03b9\u03b1 \u03bc\u03b5\u03c4\u03b1\u03b2\u03bb\u03b7\u03c4\u03ae (\u03b1\u03ba\u03ad\u03c1\u03b1\u03b9\u03bf\u03c2) \u03c0\u03bf\u03c5 \u03bc\u03b1\u03c2 \u03b4\u03b5\u03af\u03c7\u03bd\u03b5\u03b9 \u03c3\u03b5 \u03c0\u03bf\u03b9\u03b1 \u03b8\u03ad\u03c3\u03b7 \u03c4\u03bf\u03c5 \u03c0\u03af\u03bd\u03b1\u03ba\u03b1 \u03b2\u03c1\u03af\u03c3\u03ba\u03b5\u03c4\u03b1\u03b9 \u03c4\u03bf \u03c4\u03b5\u03bb\u03b5\u03c5\u03c4\u03b1\u03af\u03bf \u03c3\u03c4\u03bf\u03b9\u03c7\u03b5\u03af\u03bf.<\/li>\n<\/ul>\n<div style=\"border: 2px solid #3498db;padding: 25px;background-color: #eafaf1;margin: 30px 0;border-radius: 10px\">\n<h3 style=\"margin-top: 0;color: #2c3e50;border-bottom: 1px solid #bdc3c7;padding-bottom: 10px\">Checkpoint #1: \u039a\u03c1\u03b9\u03c4\u03b9\u03ba\u03ae \u03a3\u03ba\u03ad\u03c8\u03b7<\/h3>\n<p>\u039c\u03ad\u03c7\u03c1\u03b9 \u03c4\u03ce\u03c1\u03b1 \u03b5\u03af\u03b4\u03b1\u03bc\u03b5 \u03c4\u03b1 \u03c0\u03b9\u03ac\u03c4\u03b1. \u038c\u03bc\u03c9\u03c2, \u03b7 \u03b4\u03bf\u03bc\u03ae \u03c4\u03b7\u03c2 \u03a3\u03c4\u03bf\u03af\u03b2\u03b1\u03c2 \"\u03ba\u03c1\u03cd\u03b2\u03b5\u03c4\u03b1\u03b9\" \u03c0\u03af\u03c3\u03c9 \u03b1\u03c0\u03cc \u03c0\u03bf\u03bb\u03bb\u03ad\u03c2 \u03ba\u03b1\u03b8\u03b7\u03bc\u03b5\u03c1\u03b9\u03bd\u03ad\u03c2 \u03bc\u03b1\u03c2 \u03b5\u03bd\u03ad\u03c1\u03b3\u03b5\u03b9\u03b5\u03c2 \u03c3\u03c4\u03bf\u03bd \u03c5\u03c0\u03bf\u03bb\u03bf\u03b3\u03b9\u03c3\u03c4\u03ae.<\/p>\n<p><strong>\u03a3\u03ba\u03ad\u03c8\u03bf\u03c5 \u03c0\u03c1\u03b9\u03bd \u03b1\u03c0\u03b1\u03bd\u03c4\u03ae\u03c3\u03b5\u03b9\u03c2:<\/strong> \u038c\u03c4\u03b1\u03bd \u03c0\u03b1\u03c4\u03ac\u03c2 \u03c4\u03bf \u03ba\u03bf\u03c5\u03bc\u03c0\u03af <em>\"\u03a0\u03af\u03c3\u03c9\"<\/em> \u03c3\u03c4\u03bf\u03bd browser \u03c3\u03bf\u03c5, \u03c3\u03b5 \u03c0\u03bf\u03b9\u03b1 \u03c3\u03b5\u03bb\u03af\u03b4\u03b1 \u03c3\u03b5 \u03c0\u03b7\u03b3\u03b1\u03af\u03bd\u03b5\u03b9; \u03a3\u03c4\u03b7\u03bd \u03c0\u03c1\u03ce\u03c4\u03b7 \u03c0\u03bf\u03c5 \u03ac\u03bd\u03bf\u03b9\u03be\u03b5\u03c2 \u03c3\u03ae\u03bc\u03b5\u03c1\u03b1 \u03ae \u03c3\u03c4\u03b7\u03bd \u03b1\u03bc\u03ad\u03c3\u03c9\u03c2 \u03c0\u03c1\u03bf\u03b7\u03b3\u03bf\u03cd\u03bc\u03b5\u03bd\u03b7;<\/p>\n<div style=\"background-color: #fff;padding: 15px;border-left: 4px solid #f39c12;margin-bottom: 15px;font-style: italic\"><strong>\u03a0\u03c1\u03cc\u03ba\u03bb\u03b7\u03c3\u03b7:<\/strong> \u03a3\u03c4\u03b7\u03bd \u03c0\u03b1\u03c1\u03b1\u03ba\u03ac\u03c4\u03c9 \u03ac\u03c3\u03ba\u03b7\u03c3\u03b7 \u03c5\u03c0\u03ac\u03c1\u03c7\u03bf\u03c5\u03bd <strong>\u03c0\u03bf\u03bb\u03bb\u03b1\u03c0\u03bb\u03ad\u03c2 \u03c3\u03c9\u03c3\u03c4\u03ad\u03c2 \u03b1\u03c0\u03b1\u03bd\u03c4\u03ae\u03c3\u03b5\u03b9\u03c2<\/strong>. \u039c\u03c0\u03bf\u03c1\u03b5\u03af\u03c2 \u03bd\u03b1 \u03c4\u03b9\u03c2 \u03b2\u03c1\u03b5\u03b9\u03c2 \u03cc\u03bb\u03b5\u03c2 \u03c7\u03c9\u03c1\u03af\u03c2 \u03bd\u03b1 \u03ba\u03ac\u03bd\u03b5\u03b9\u03c2 \u03bb\u03ac\u03b8\u03bf\u03c2;<\/div>\n<div style=\"background: #ffffff;border: 1px dashed #3498db;padding: 20px;text-align: center;color: #7f8c8d\"><iframe allow=\"microphone https:\/\/content.e-me-4all.eu\" src=\"https:\/\/content.e-me-4all.eu\/wp-admin\/admin-ajax.php?action=h5p_embed&id=[eme_content_id 111263]\" frameborder=\"0\" allowfullscreen=\"allowfullscreen\" onload=\"iFrameResize({heightCalculationMethod:'max'})\"><\/iframe><\/div>\n<\/div>\n<h2 style=\"color: #e67e22;border-bottom: 2px solid #e67e22\">2. \u039f\u03b9 \u039b\u03b5\u03b9\u03c4\u03bf\u03c5\u03c1\u03b3\u03af\u03b5\u03c2 Push &amp; Pop<\/h2>\n<p>\u03a3\u03c4\u03b7 \u0393' \u039b\u03c5\u03ba\u03b5\u03af\u03bf\u03c5 \u03bc\u03b5\u03bb\u03b5\u03c4\u03ac\u03bc\u03b5 \u03c4\u03b7\u03bd \u03c5\u03bb\u03bf\u03c0\u03bf\u03af\u03b7\u03c3\u03b7 \u03c3\u03c4\u03bf\u03af\u03b2\u03b1\u03c2 \u03bc\u03b5 \u03c4\u03b7 \u03c7\u03c1\u03ae\u03c3\u03b7 \u03bc\u03bf\u03bd\u03bf\u03b4\u03b9\u03ac\u03c3\u03c4\u03b1\u03c4\u03bf\u03c5 \u03c0\u03af\u03bd\u03b1\u03ba\u03b1.<\/p>\n<div style=\"gap: 20px;flex-wrap: wrap\">\n<div style=\"flex: 1;background: #f9e79f;padding: 15px;border-radius: 8px\">\n<h3>\u2b06\ufe0f \u038f\u03b8\u03b7\u03c3\u03b7 (Push)<\/h3>\n<p>\u0395\u03af\u03bd\u03b1\u03b9 \u03b7 \u03b5\u03b9\u03c3\u03b1\u03b3\u03c9\u03b3\u03ae \u03c3\u03c4\u03bf\u03b9\u03c7\u03b5\u03af\u03bf\u03c5.<\/p>\n<ol>\n<li>\u0395\u03bb\u03ad\u03b3\u03c7\u03bf\u03c5\u03bc\u03b5 \u03b1\u03bd \u03b7 \u03c3\u03c4\u03bf\u03af\u03b2\u03b1 \u03b5\u03af\u03bd\u03b1\u03b9 <strong>\u0393\u03b5\u03bc\u03ac\u03c4\u03b7<\/strong> (\u03a5\u03c0\u03b5\u03c1\u03c7\u03b5\u03af\u03bb\u03b9\u03c3\u03b7).<\/li>\n<li>\u0391\u03c5\u03be\u03ac\u03bd\u03bf\u03c5\u03bc\u03b5 \u03c4\u03bf <code>top<\/code> \u03ba\u03b1\u03c4\u03ac 1.<\/li>\n<li>\u03a4\u03bf\u03c0\u03bf\u03b8\u03b5\u03c4\u03bf\u03cd\u03bc\u03b5 \u03c4\u03bf \u03c3\u03c4\u03bf\u03b9\u03c7\u03b5\u03af\u03bf \u03c3\u03c4\u03b7 \u03b8\u03ad\u03c3\u03b7 <code>top<\/code>.<\/li>\n<\/ol>\n<\/div>\n<div style=\"flex: 1;background: #aed6f1;padding: 15px;border-radius: 8px\">\n<h3>\u2b07\ufe0f \u0391\u03c0\u03ce\u03b8\u03b7\u03c3\u03b7 (Pop)<\/h3>\n<p>\u0395\u03af\u03bd\u03b1\u03b9 \u03b7 \u03b5\u03be\u03b1\u03b3\u03c9\u03b3\u03ae \u03c3\u03c4\u03bf\u03b9\u03c7\u03b5\u03af\u03bf\u03c5.<\/p>\n<ol>\n<li>\u0395\u03bb\u03ad\u03b3\u03c7\u03bf\u03c5\u03bc\u03b5 \u03b1\u03bd \u03b7 \u03c3\u03c4\u03bf\u03af\u03b2\u03b1 \u03b5\u03af\u03bd\u03b1\u03b9 <strong>\u0386\u03b4\u03b5\u03b9\u03b1<\/strong> (\u03a5\u03c0\u03bf\u03c7\u03b5\u03af\u03bb\u03b9\u03c3\u03b7).<\/li>\n<li>\u03a0\u03b1\u03af\u03c1\u03bd\u03bf\u03c5\u03bc\u03b5 \u03c4\u03bf \u03c3\u03c4\u03bf\u03b9\u03c7\u03b5\u03af\u03bf \u03b1\u03c0\u03cc \u03c4\u03b7 \u03b8\u03ad\u03c3\u03b7 <code>top<\/code>.<\/li>\n<li>\u039c\u03b5\u03b9\u03ce\u03bd\u03bf\u03c5\u03bc\u03b5 \u03c4\u03bf <code>top<\/code> \u03ba\u03b1\u03c4\u03ac 1.<\/li>\n<\/ol>\n<\/div>\n<\/div>\n<div style=\"border: 2px dashed #3498db;padding: 20px;background-color: #eafaf1;margin: 20px 0;border-radius: 10px\">\n<h4 style=\"margin-top: 0;color: #27ae60\">Checkpoint #2 (\u03a0\u03c1\u03bf\u03c3\u03bf\u03bc\u03bf\u03af\u03c9\u03c3\u03b7)<\/h4>\n<p><em>\u039f\u03b4\u03b7\u03b3\u03af\u03b1: \u03c3\u03c4\u03bf e-me content \u03ad\u03bd\u03b1 \"Course Presentation\" \u03bc\u03b5 \u03b4\u03b9\u03b1\u03c6\u03ac\u03bd\u03b5\u03b9\u03b5\u03c2 \u03c0\u03bf\u03c5 \u03b4\u03b5\u03af\u03c7\u03bd\u03bf\u03c5\u03bd \u03c4\u03b7\u03bd \u03b5\u03be\u03ad\u03bb\u03b9\u03be\u03b7 \u03c4\u03bf\u03c5 \u03c0\u03af\u03bd\u03b1\u03ba\u03b1.<\/em><\/p>\n<p><strong>\u0386\u03c3\u03ba\u03b7\u03c3\u03b7:<\/strong> \u0388\u03c7\u03bf\u03c5\u03bc\u03b5 \u03c0\u03af\u03bd\u03b1\u03ba\u03b1 5 \u03b8\u03ad\u03c3\u03b5\u03c9\u03bd. Push(A), Push(B), Pop(), Push(C). \u03a0\u03bf\u03b9\u03bf \u03c3\u03c4\u03bf\u03b9\u03c7\u03b5\u03af\u03bf \u03b5\u03af\u03bd\u03b1\u03b9 \u03c3\u03c4\u03bf top;<\/p>\n<div style=\"background: #fff;border: 1px solid #ccc;padding: 10px;text-align: center\"><iframe allow=\"microphone https:\/\/content.e-me-4all.eu\" src=\"https:\/\/content.e-me-4all.eu\/wp-admin\/admin-ajax.php?action=h5p_embed&id=[eme_content_id 111269]\" frameborder=\"0\" allowfullscreen=\"allowfullscreen\" onload=\"iFrameResize({heightCalculationMethod:'max'})\"><\/iframe><\/div>\n<div style=\"background: #fff;border: 1px solid #ccc;padding: 10px;text-align: center\"><iframe allow=\"microphone https:\/\/content.e-me-4all.eu\" src=\"https:\/\/content.e-me-4all.eu\/wp-admin\/admin-ajax.php?action=h5p_embed&id=[eme_content_id 111272]\" frameborder=\"0\" allowfullscreen=\"allowfullscreen\" onload=\"iFrameResize({heightCalculationMethod:'max'})\"><\/iframe><\/div>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>\u039c\u03ac\u03b8\u03b7\u03bc\u03b1 1: \u0397 \u03a3\u03c4\u03bf\u03af\u03b2\u03b1 (Stack) \u0394\u03b9\u03ac\u03c1\u03ba\u03b5\u03b9\u03b1: 45 \u039b\u03b5\u03c0\u03c4\u03ac \u03a0\u03b7\u03b3\u03ae: \u03a3\u03c5\u03bc\u03c0\u03bb\u03b7\u03c1\u03c9\u03bc\u03b1\u03c4\u03b9\u03ba\u03cc \u03a5\u03bb\u03b9\u03ba\u03cc, \u039a\u03b5\u03c6\u03ac\u03bb\u03b1\u03b9\u03bf \u0394\u03bf\u03bc\u03ad\u03c2 \u0394\u03b5\u03b4\u03bf\u03bc\u03ad\u03bd\u03c9\u03bd \u0395\u03b9\u03c3\u03b1\u03b3\u03c9\u03b3\u03ae \u0394\u03b5\u03af\u03c4\u03b5 \u03c4\u03bf \u03c0\u03b1\u03c1\u03b1\u03ba\u03ac\u03c4\u03c9 \u03b2\u03af\u03bd\u03c4\u03b5\u03bf \u03b3\u03b9\u03b1 \u03bd\u03b1 \u03ba\u03b1\u03c4\u03b1\u03bb\u03ac\u03b2\u03b5\u03c4\u03b5 \u03c0\u03ce\u03c2 \u03bb\u03b5\u03b9\u03c4\u03bf\u03c5\u03c1\u03b3\u03b5\u03af \u03b7 &#8220;\u03b1\u03bd\u03ac\u03ba\u03bb\u03b7\u03c3\u03b7&#8221; \u03b5\u03bd\u03b5\u03c1\u03b3\u03b5\u03b9\u03ce\u03bd (Undo) \u03c3\u03c4\u03bf\u03bd \u03c5\u03c0\u03bf\u03bb\u03bf\u03b3\u03b9\u03c3\u03c4\u03ae \u03c3\u03b1\u03c2. 1. \u03a4\u03b9 \u03b5\u03af\u03bd\u03b1\u03b9 \u03b7 \u03a3\u03c4\u03bf\u03af\u03b2\u03b1; \u0397 \u03a3\u03c4\u03bf\u03af\u03b2\u03b1 &hellip; <\/p>\n<div class=\"more-link-wrapper\"><a href=\"https:\/\/blogs.e-me-4all.eu\/tsilispyr\/%ce%b7-%cf%83%cf%84%ce%bf%ce%af%ce%b2%ce%b1-stack\/\" class=\"more-link\">Continue reading<span class=\"screen-reader-text\"> &#8220;\u0397 \u03a3\u03c4\u03bf\u03af\u03b2\u03b1 (Stack)&#8221;<\/span><\/a><\/div>\n","protected":false},"author":61208,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-62","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/blogs.e-me-4all.eu\/tsilispyr\/wp-json\/wp\/v2\/pages\/62","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/blogs.e-me-4all.eu\/tsilispyr\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/blogs.e-me-4all.eu\/tsilispyr\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/blogs.e-me-4all.eu\/tsilispyr\/wp-json\/wp\/v2\/users\/61208"}],"replies":[{"embeddable":true,"href":"https:\/\/blogs.e-me-4all.eu\/tsilispyr\/wp-json\/wp\/v2\/comments?post=62"}],"version-history":[{"count":0,"href":"https:\/\/blogs.e-me-4all.eu\/tsilispyr\/wp-json\/wp\/v2\/pages\/62\/revisions"}],"wp:attachment":[{"href":"https:\/\/blogs.e-me-4all.eu\/tsilispyr\/wp-json\/wp\/v2\/media?parent=62"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}