{"id":997,"date":"2020-12-14T23:47:55","date_gmt":"2020-12-14T20:47:55","guid":{"rendered":"http:\/\/users.sch.gr\/chatzipap\/?p=997"},"modified":"2021-04-08T02:51:23","modified_gmt":"2021-04-07T23:51:23","slug":"stack_with_array","status":"publish","type":"post","link":"http:\/\/users.sch.gr\/chatzipap\/stack_with_array\/","title":{"rendered":"\u0394\u03bf\u03bc\u03ae \u0394\u03b5\u03b4\u03bf\u03bc\u03ad\u03bd\u03c9\u03bd \u03a3\u03c4\u03bf\u03af\u03b2\u03b1\u03c2 -Virtual Stack Try it"},"content":{"rendered":"<h4 style=\"text-align: justify;\">1. \u03a4\u03b9 \u03b5\u03af\u03bd\u03b1\u03b9 \u03a3\u03c4\u03bf\u03af\u03b2\u03b1<\/h4>\n<p style=\"text-align: justify;\">\u0397\u00a0 \u03c3\u03c4\u03bf\u03af\u03b2\u03b1 \u03c3\u03c4\u03b7\u03bd \u03c0\u03bb\u03b7\u03c1\u03bf\u03c6\u03bf\u03c1\u03b9\u03ba\u03ae \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 \u03bc\u03b5 \u03c4\u03b7 \u03bc\u03bf\u03c1\u03c6\u03ae \u03c3\u03c5\u03bb\u03bb\u03bf\u03b3\u03ae\u03c2 \u03c3\u03c4\u03bf\u03b9\u03c7\u03b5\u03af\u03c9\u03bd \u03c0\u03bf\u03c5 \u03b2\u03c1\u03af\u03c3\u03ba\u03bf\u03bd\u03c4\u03b1\u03b9 \u03c3\u03b5 \u03bc\u03af\u03b1 \u03c3\u03b5\u03b9\u03c1\u03ac. \u0397 \u03b9\u03b4\u03b9\u03b1\u03b9\u03c4\u03b5\u03c1\u03cc\u03c4\u03b7\u03c4\u03b1 \u03cc\u03bc\u03c9\u03c2 \u03c4\u03b7\u03c2 \u03b4\u03bf\u03bc\u03ae\u03c2 \u03b1\u03c5\u03c4\u03ae\u03c2 \u03b5\u03af\u03bd\u03b1\u03b9\u00a0 \u03cc\u03c4\u03b9 \u03b7 \u03b5\u03b9\u03c3\u03b1\u03b3\u03c9\u03b3\u03ae \u03ba\u03b1\u03b9 \u03b7 \u03b5\u03be\u03b1\u03b3\u03c9\u03b3\u03ae \u03c3\u03c4\u03bf\u03b9\u03c7\u03b5\u03af\u03c9\u03bd\u00a0 \u03b3\u03af\u03bd\u03b5\u03c4\u03b1\u03b9 \u03bc\u03cc\u03bd\u03bf \u03b1\u03c0\u03cc \u03c4\u03bf \u03ad\u03bd\u03b1 \u03ac\u03ba\u03c1\u03bf \u03c4\u03b7\u03c2 \u03c4\u03bf \u03bf\u03c0\u03bf\u03af\u03bf \u03b5\u03af\u03bd\u03b1\u03b9 \u03ba\u03b1\u03b9 \u03c4\u03bf \u03c4\u03ad\u03bb\u03bf\u03c2 \u03c4\u03b7\u03c2 \u03c3\u03c4\u03bf\u03af\u03b2\u03b1\u03c2. \u039c\u03b5 \u03b1\u03c5\u03c4\u03cc\u03bd \u03c4\u03bf\u03bd \u03c4\u03c1\u03cc\u03c0\u03bf, \u03b7 \u03c3\u03c4\u03bf\u03af\u03b2\u03b1 \u03b5\u03af\u03bd\u03b1\u03b9 \u03bc\u03b9\u03b1 <strong>LIFO<\/strong>(Last-In-First-Out, \u03a4\u03b5\u03bb\u03b5\u03c5\u03c4\u03b1\u03af\u03bf-\u039c\u03ad\u03c3\u03b1-\u03a0\u03c1\u03ce\u03c4\u03bf-\u0388\u03be\u03c9) \u03b4\u03bf\u03bc\u03ae \u03b4\u03b5\u03b4\u03bf\u03bc\u03ad\u03bd\u03c9\u03bd. \u03a3\u03b5 \u03bc\u03b9\u03b1 LIFO \u03b4\u03bf\u03bc\u03ae \u03b4\u03b5\u03b4\u03bf\u03bc\u03ad\u03bd\u03c9\u03bd, \u03c4\u03bf \u03c4\u03b5\u03bb\u03b5\u03c5\u03c4\u03b1\u03af\u03bf \u03c3\u03c4\u03bf\u03b9\u03c7\u03b5\u03af\u03bf \u03c0\u03bf\u03c5 \u03b5\u03b9\u03c3\u03ac\u03b3\u03b5\u03c4\u03b1\u03b9 \u03c3\u03c4\u03b7\u03bd \u03c3\u03c4\u03bf\u03af\u03b2\u03b1 \u03b8\u03b1 \u03b5\u03af\u03bd\u03b1\u03b9 \u03c4\u03bf \u03c0\u03c1\u03ce\u03c4\u03bf \u03c0\u03bf\u03c5 \u03b8\u03b1 \u03b1\u03c6\u03b1\u03b9\u03c1\u03b5\u03b8\u03b5\u03af-\u03b5\u03be\u03c5\u03c0\u03b7\u03c1\u03b5\u03c4\u03b7\u03b8\u03b5\u03af.<!--more--><\/p>\n<h5 style=\"text-align: justify;\">1.1 \u03a7\u03c1\u03ae\u03c3\u03b7 \u03c4\u03b7\u03c2 \u03a3\u03c4\u03bf\u03af\u03b2\u03b1\u03c2<\/h5>\n<p style=\"text-align: justify;\">\u039f\u03b9 \u03c3\u03c4\u03bf\u03af\u03b2\u03b5\u03c2 \u03c7\u03c1\u03b7\u03c3\u03b9\u03bc\u03bf\u03c0\u03bf\u03b9\u03bf\u03cd\u03bd\u03c4\u03b1\u03b9 \u03c3\u03c4\u03bf\u03bd \u03c0\u03c1\u03bf\u03b3\u03c1\u03b1\u03bc\u03bc\u03b1\u03c4\u03b9\u03c3\u03bc\u03cc \u03c5\u03c0\u03bf\u03bb\u03bf\u03b3\u03b9\u03c3\u03c4\u03ce\u03bd \u03c9\u03c2 \u03b4\u03bf\u03bc\u03ad\u03c2 \u03b4\u03b5\u03b4\u03bf\u03bc\u03ad\u03bd\u03c9\u03bd. \u0395\u03af\u03bd\u03b1\u03b9 \u03bf \u03b1\u03c6\u03b7\u03c1\u03b7\u03bc\u03ad\u03bd\u03bf\u03c2 \u03c4\u03cd\u03c0\u03bf\u03c2 \u03b4\u03b5\u03b4\u03bf\u03bc\u03ad\u03bd\u03c9\u03bd \u03c0\u03c7 \u03bc\u03b9\u03b1\u03c2 \u03c3\u03c4\u03bf\u03af\u03b2\u03b1\u03c2 \u03c0\u03b9\u03ac\u03c4\u03c9\u03bd \u03ae \u03ba\u03b9\u03b2\u03c9\u03c4\u03af\u03c9\u03bd \u03c0\u03bf\u03c5 \u03b2\u03c1\u03af\u03c3\u03ba\u03bf\u03bd\u03c4\u03b1\u03b9 \u03c4\u03bf \u03ad\u03bd\u03b1 \u03b5\u03c0\u03ac\u03bd\u03c9 \u03c3\u03c4\u03bf \u03ac\u03bb\u03bb\u03bf. \u03a3\u03c4\u03b9\u03c2 \u03b5\u03c6\u03b1\u03c1\u03bc\u03bf\u03b3\u03ad\u03c2 \u03c4\u03c9\u03bd \u0397\u03a5 \u03c7\u03c1\u03b7\u03c3\u03b9\u03bc\u03bf\u03c0\u03bf\u03b9\u03bf\u03cd\u03bd\u03c4\u03b1\u03b9 \u03c3\u03c4\u03b7\u03bd \u03b1\u03c0\u03bf\u03c4\u03af\u03bc\u03b7\u03c3\u03b7 \u03b5\u03ba\u03c6\u03c1\u03ac\u03c3\u03b5\u03c9\u03bd, \u03c3\u03c4\u03b7 \u03b4\u03b9\u03b1\u03c4\u03ae\u03c1\u03b7\u03c3\u03b7 \u03b9\u03c3\u03c4\u03bf\u03c1\u03b9\u03ba\u03bf\u03cd, \u03c3\u03c4\u03b7\u03bd \u03ba\u03bb\u03ae\u03c3\u03b7 \u03c3\u03c5\u03bd\u03b1\u03c1\u03c4\u03ae\u03c3\u03b5\u03c9\u03bd \u03ba\u03bb\u03c0. \u03a3\u03c4\u03b9\u03c2 \u03b1\u03bd\u03c4\u03b9\u03ba\u03b5\u03b9\u03bc\u03b5\u03bd\u03bf\u03c3\u03c4\u03c1\u03b1\u03c6\u03b5\u03af\u03c2 \u03b3\u03bb\u03ce\u03c3\u03c3\u03b5\u03c2 \u03c0\u03c1\u03bf\u03b3\u03c1\u03b1\u03bc\u03bc\u03b1\u03c4\u03b9\u03c3\u03bc\u03bf\u03cd \u03c5\u03bb\u03bf\u03c0\u03bf\u03b9\u03bf\u03cd\u03bd\u03c4\u03b1\u03b9 \u03c9\u03c2 \u03ba\u03bb\u03ac\u03c3\u03b5\u03b9\u03c2-\u03b1\u03bd\u03c4\u03b9\u03ba\u03b5\u03af\u03bc\u03b5\u03bd\u03b1. \u039f\u03b9 \u03b2\u03b1\u03c3\u03b9\u03ba\u03ad\u03c2 \u03c4\u03b7\u03c2 \u03bb\u03b5\u03b9\u03c4\u03bf\u03c5\u03c1\u03b3\u03af\u03b5\u03c2 \u03b5\u03af\u03bd\u03b1\u03b9 \u03b7 \u03ce\u03b8\u03b7\u03c3\u03b7 \u03c3\u03c4\u03bf\u03b9\u03c7\u03b5\u03af\u03bf\u03c5 \u03ba\u03b1\u03b9 \u03b7 \u03b1\u03c0\u03ce\u03b8\u03b7\u03c3\u03b7 \u03c3\u03c4\u03bf\u03b9\u03c7\u03b5\u03af\u03bf\u03c5.<\/p>\n<h5 style=\"text-align: justify;\">1.2 \u0391\u03bd\u03b1\u03c0\u03b1\u03c1\u03ac\u03c3\u03c4\u03b1\u03c3\u03b7 \u03c4\u03b7\u03c2 \u03c3\u03c4\u03bf\u03af\u03b2\u03b1\u03c2<\/h5>\n<p style=\"text-align: justify;\">\u03a3\u03c4\u03b7\u03bd \u03c3\u03c4\u03bf\u03af\u03b2\u03b1 \u03b5\u03be\u03c5\u03c0\u03b7\u03c1\u03b5\u03c4\u03b5\u03af\u03c4\u03b1\u03b9 \u03b1\u03c5\u03c4\u03cc\u03c2 \u03c0\u03bf\u03c5 \u03bc\u03c0\u03ae\u03ba\u03b5 \u03c4\u03b5\u03bb\u03b5\u03c5\u03c4\u03b1\u03af\u03bf\u03c2 (\u03c4\u03ad\u03bb\u03bf\u03c2 \u03c4\u03b7\u03c2 \u03c3\u03c4\u03bf\u03af\u03b2\u03b1\u03c2).<br \/>\n\u0397 \u03b9\u03b4\u03b9\u03cc\u03c4\u03b7\u03c4\u03b1 \u03bc\u03ad\u03c3\u03c9 \u03c4\u03b7\u03c2 \u03bf\u03c0\u03bf\u03af\u03b1\u03c2 \u03ba\u03b1\u03b8\u03bf\u03c1\u03af\u03b6\u03b5\u03c4\u03b1\u03b9 \u03bc\u03b9\u03b1 \u03b4\u03bf\u03bc\u03ae \u03b4\u03b5\u03b4\u03bf\u03bc\u03ad\u03bd\u03c9\u03bd \u03c9\u03c2 \u03c3\u03c4\u03bf\u03af\u03b2\u03b1 \u03b5\u03af\u03bd\u03b1\u03b9 \u03c4\u03bf \u03b3\u03b5\u03b3\u03bf\u03bd\u03cc\u03c2 \u03cc\u03c4\u03b9 \u03b1\u03c5\u03c4\u03ae \u03b5\u03c0\u03b9\u03c4\u03c1\u03ad\u03c0\u03b5\u03b9 \u03c0\u03c1\u03cc\u03c3\u03b2\u03b1\u03c3\u03b7 \u039c\u039f\u039d\u039f \u03c3\u03c4\u03bf \u03c4\u03ad\u03bb\u03bf\u03c2 \u03c4\u03b7\u03c2 \u03c3\u03c4\u03bf\u03af\u03b2\u03b1\u03c2. \u0388\u03c4\u03c3\u03b9, \u03b7 \u03b5\u03b9\u03c3\u03b1\u03b3\u03c9\u03b3\u03ae \u03ba\u03b1\u03b9 \u03b7 \u03b4\u03b9\u03b1\u03b3\u03c1\u03b1\u03c6\u03ae \u03c3\u03c4\u03bf\u03b9\u03c7\u03b5\u03af\u03c9\u03bd \u03b3\u03af\u03bd\u03b5\u03c4\u03b1\u03b9 \u03bc\u03cc\u03bd\u03bf \u03b1\u03c0\u03cc \u03c4\u03bf \u03ad\u03bd\u03b1 \u03ac\u03ba\u03c1\u03bf \u03c4\u03b7\u03c2 (\u03c0\u03af\u03c3\u03c9). \u0397 \u03c4\u03c5\u03c7\u03b1\u03af\u03b1 \u03c0\u03c1\u03bf\u03c3\u03c0\u03ad\u03bb\u03b1\u03c3\u03b7 \u03c3\u03c4\u03b1 \u03c3\u03c4\u03bf\u03b9\u03c7\u03b5\u03af\u03b1 \u03c4\u03b7\u03c2 \u03c3\u03c4\u03bf\u03af\u03b2\u03b1\u03c2 \u03b3\u03b9\u03b1 \u03b5\u03c0\u03b5\u03be\u03b5\u03c1\u03b3\u03b1\u03c3\u03af\u03b1 (\u03c0\u03c7 \u03b5\u03bc\u03c6\u03ac\u03bd\u03b9\u03c3\u03b7) \u03b1\u03c0\u03b1\u03b3\u03bf\u03c1\u03b5\u03cd\u03b5\u03c4\u03b1\u03b9 \u03b1\u03c5\u03c3\u03c4\u03b7\u03c1\u03ac (\u03c0\u03b1\u03cd\u03b5\u03b9 \u03bd\u03b1 \u03b5\u03af\u03bd\u03b1\u03b9 \u03b4\u03bf\u03bc\u03ae \u03c3\u03c4\u03bf\u03af\u03b2\u03b1\u03c2).<\/p>\n<h5 style=\"text-align: justify;\">1.3 \u0393\u03b5\u03bd\u03b9\u03ba\u03bf\u03af \u03c4\u03c1\u03cc\u03c0\u03bf\u03b9 \u03c5\u03bb\u03bf\u03c0\u03bf\u03af\u03b7\u03c3\u03b7\u03c2 \u03c4\u03b7\u03c2 \u03c3\u03c4\u03bf\u03af\u03b2\u03b1\u03c2<\/h5>\n<ul style=\"text-align: justify;\">\n<li>\u0398\u03b5\u03c9\u03c1\u03b7\u03c4\u03b9\u03ba\u03ac, \u03ad\u03bd\u03b1 \u03c7\u03b1\u03c1\u03b1\u03ba\u03c4\u03b7\u03c1\u03b9\u03c3\u03c4\u03b9\u03ba\u03cc \u03c4\u03b7\u03c2 \u03c3\u03c4\u03bf\u03af\u03b2\u03b1\u03c2 \u03cc\u03c4\u03b1\u03bd \u03b1\u03c5\u03c4\u03ae \u03c5\u03bb\u03bf\u03c0\u03bf\u03b9\u03b5\u03af\u03c4\u03b1\u03b9 \u03bc\u03b5 <strong>\u03b4\u03c5\u03bd\u03b1\u03bc\u03b9\u03ba\u03ae \u03b4\u03bf\u03bc\u03ae<\/strong> \u03b5\u03af\u03bd\u03b1\u03b9 \u03cc\u03c4\u03b9 \u03b4\u03b5\u03bd \u03ad\u03c7\u03b5\u03b9 \u03c3\u03c5\u03b3\u03ba\u03b5\u03ba\u03c1\u03b9\u03bc\u03ad\u03bd\u03bf \u03bc\u03ad\u03b3\u03b5\u03b8\u03bf\u03c2. \u0391\u03c3\u03c7\u03ad\u03c4\u03c9\u03c2 \u03b1\u03c0\u03cc \u03c4\u03bf \u03c0\u03cc\u03c3\u03b1 \u03c3\u03c4\u03bf\u03b9\u03c7\u03b5\u03af\u03b1 \u03c0\u03b5\u03c1\u03b9\u03ad\u03c7\u03bf\u03bd\u03c4\u03b1\u03b9 \u03ae\u03b4\u03b7, \u03ad\u03bd\u03b1 \u03bd\u03ad\u03bf \u03c3\u03c4\u03bf\u03b9\u03c7\u03b5\u03af\u03bf \u03bc\u03c0\u03bf\u03c1\u03b5\u03af \u03c0\u03ac\u03bd\u03c4\u03b1 \u03bd\u03b1 \u03b5\u03b9\u03c3\u03b1\u03c7\u03b8\u03b5\u03af. \u03a3\u03c4\u03b7\u03bd \u03c0\u03b5\u03c1\u03af\u03c0\u03c4\u03c9\u03c3\u03b7 \u03c0\u03bf\u03c5 \u03b7 \u03c3\u03c4\u03bf\u03af\u03b2\u03b1 \u03b5\u03af\u03bd\u03b1\u03b9 \u03ac\u03b4\u03b5\u03b9\u03b1 \u03b4\u03b5\u03bd \u03bc\u03c0\u03bf\u03c1\u03b5\u03af \u03bd\u03b1 \u03b3\u03af\u03bd\u03b5\u03b9 \u03b5\u03be\u03b1\u03b3\u03c9\u03b3\u03ae\u00a0 \u03c3\u03c4\u03bf\u03b9\u03c7\u03b5\u03af\u03bf\u03c5 \u03c0\u03c1\u03b9\u03bd \u03b5\u03b9\u03c3\u03b1\u03c7\u03b8\u03b5\u03af \u03ba\u03ac\u03c0\u03bf\u03b9\u03bf \u03bd\u03ad\u03bf.<\/li>\n<li>\u039c\u03b9\u03b1 \u03ac\u03bb\u03bb\u03b7 \u03c5\u03bb\u03bf\u03c0\u03bf\u03af\u03b7\u03c3\u03b7 \u03c3\u03c4\u03bf\u03af\u03b2\u03b1\u03c2 \u03b5\u03af\u03bd\u03b1\u03b9 \u03b1\u03c5\u03c4\u03ae \u03c0\u03bf\u03c5 \u03b3\u03af\u03bd\u03b5\u03c4\u03b1\u03b9 \u03bc\u03b5 \u03bc\u03b9\u03b1 <strong>\u03c3\u03c4\u03b1\u03c4\u03b9\u03ba\u03ae \u03b4\u03bf\u03bc\u03ae \u03b4\u03b5\u03b4\u03bf\u03bc\u03ad\u03bd\u03c9\u03bd<\/strong> \u03c3\u03c4\u03b1\u03b8\u03b5\u03c1\u03bf\u03cd \u03bc\u03b5\u03b3\u03ad\u03b8\u03bf\u03c5\u03c2 \u03b5\u03ba\u03c7\u03c9\u03c1\u03b7\u03bc\u03ad\u03bd\u03b7\u03c2 \u03bc\u03bd\u03ae\u03bc\u03b7\u03c2. \u03a3\u03b5 \u03b1\u03c5\u03c4\u03ae \u03c4\u03b7\u03bd \u03c0\u03b5\u03c1\u03af\u03c0\u03c4\u03c9\u03c3\u03b7 \u03bf \u03cc\u03c1\u03bf\u03c2 \u03c5\u03c0\u03b5\u03c1\u03c7\u03b5\u03af\u03bb\u03b9\u03c3\u03b7 \u03c4\u03b7\u03c2 \u03c3\u03c4\u03bf\u03af\u03b2\u03b1\u03c2 \u03c3\u03c5\u03bc\u03b2\u03b1\u03af\u03bd\u03b5\u03b9 \u03ba\u03b1\u03c4\u03ac \u03c4\u03b7\u03bd \u03c0\u03c1\u03bf\u03c3\u03c0\u03ac\u03b8\u03b5\u03b9\u03b1 \u03bd\u03b1 \u03b5\u03b9\u03c3\u03b1\u03c7\u03b8\u03b5\u03af \u03ad\u03bd\u03b1 \u03c3\u03c4\u03bf\u03b9\u03c7\u03b5\u03af\u03bf \u03c3\u03b5 \u03bc\u03b9\u03b1 \u03b3\u03b5\u03bc\u03ac\u03c4\u03b7 \u03c3\u03c4\u03bf\u03af\u03b2\u03b1, \u03b5\u03bd\u03ce \u03b7 \u03c5\u03c0\u03bf\u03c7\u03b5\u03af\u03bb\u03b9\u03c3\u03b7 \u03c3\u03c5\u03bc\u03b2\u03b1\u03af\u03bd\u03b5\u03b9 <strong>\u03ba\u03b1\u03b9 \u03c3\u03c4\u03b9\u03c2 \u03b4\u03cd\u03bf \u03c5\u03bb\u03bf\u03c0\u03bf\u03b9\u03ae\u03c3\u03b5\u03b9\u03c2<\/strong> \u03cc\u03c4\u03b1\u03bd \u03b3\u03af\u03bd\u03b5\u03c4\u03b1\u03b9 \u03c0\u03c1\u03bf\u03c3\u03c0\u03ac\u03b8\u03b5\u03b9\u03b1 \u03b4\u03b9\u03b1\u03b3\u03c1\u03b1\u03c6\u03ae\u03c2 &#8211; \u03b5\u03be\u03b1\u03b3\u03c9\u03b3\u03ae\u03c2 \u03b5\u03bd\u03cc\u03c2 \u03c3\u03c4\u03bf\u03b9\u03c7\u03b5\u03af\u03bf\u03c5 \u03b1\u03c0\u03cc \u03bc\u03b9\u03b1 \u03ac\u03b4\u03b5\u03b9\u03b1 \u03c3\u03c4\u03bf\u03af\u03b2\u03b1.<\/li>\n<\/ul>\n<h4 style=\"text-align: justify;\">2. \u03a5\u03bb\u03bf\u03c0\u03bf\u03af\u03b7\u03c3\u03b7 &amp; \u0391\u03bd\u03b1\u03c0\u03b1\u03c1\u03ac\u03c3\u03c4\u03b1\u03c3\u03b7 \u03bb\u03b5\u03b9\u03c4\u03bf\u03c5\u03c1\u03b3\u03af\u03b1\u03c2 \u03c4\u03b7\u03c2 \u03c3\u03c4\u03bf\u03af\u03b2\u03b1\u03c2 \u03bc\u03b5 \u03c4\u03b7\u03bd \u039a\u03bb\u03ac\u03c3\u03b7: Stack<\/h4>\n<p style=\"text-align: justify;\">\u03a3\u03c4\u03bf \u03c0\u03b1\u03c1\u03b1\u03ba\u03ac\u03c4\u03c9 \u03c0\u03b1\u03c1\u03ac\u03b4\u03b5\u03b9\u03b3\u03bc\u03b1 \u03c4\u03bf \u03bf\u03c0\u03bf\u03af\u03bf \u03ad\u03c7\u03b5\u03b9 \u03c5\u03bb\u03bf\u03c0\u03bf\u03b9\u03b7\u03b8\u03b5\u03af \u03bc\u03b5 \u03b3\u03bb\u03ce\u03c3\u03c3\u03b1 Python 3 \u03b5\u03c0\u03b9\u03c7\u03b5\u03b9\u03c1\u03b5\u03af\u03c4\u03b1\u03b9 \u03c5\u03bb\u03bf\u03c0\u03bf\u03af\u03b7\u03c3\u03b7 \u03c4\u03b7\u03c2 \u03c3\u03c4\u03bf\u03af\u03b2\u03b1\u03c2 \u03bc\u03b5 \u03c4\u03b7 \u03b4\u03bf\u03bc\u03ae \u03c4\u03b7\u03c2 \u03bb\u03af\u03c3\u03c4\u03b1\u03c2 \u03c4\u03b7\u03c2 python \u03c0\u03bf\u03c5 \u03cc\u03bc\u03c9\u03c2 \u03b3\u03b9\u03b1 \u03bb\u03cc\u03b3\u03bf\u03c5\u03c2 \u03c3\u03c5\u03bc\u03b2\u03b1\u03c4\u03cc\u03c4\u03b7\u03c4\u03b1\u03c2 \u03bc\u03b5 \u03c4\u03b7\u03bd \u03cd\u03bb\u03b7 \u03c4\u03bf\u03c5 \u0393\u0395\u039b \u03b3\u03af\u03bd\u03b5\u03c4\u03b1\u03b9 \u03c7\u03b5\u03b9\u03c1\u03b9\u03c3\u03bc\u03cc\u03c2 \u03c4\u03b7\u03c2 \u03c9\u03c2 \u03c3\u03c4\u03b1\u03c4\u03b9\u03ba\u03ae\u03c2 \u03b4\u03bf\u03bc\u03ae\u03c2 \u03c0\u03af\u03bd\u03b1\u03ba\u03b1.<\/p>\n<h5>2.1 \u038f\u03b8\u03b7\u03c3\u03b7 \u03a3\u03c4\u03bf\u03b9\u03c7\u03b5\u03af\u03bf\u03c5<\/h5>\n<p style=\"text-align: justify;\">\u039f \u03c7\u03b5\u03b9\u03c1\u03b9\u03c3\u03bc\u03cc\u03c2 \u03c4\u03b7\u03c2 \u03c3\u03c4\u03bf\u03af\u03b2\u03b1\u03c2 \u03b3\u03af\u03bd\u03b5\u03c4\u03b1\u03b9 \u03c7\u03c1\u03b7\u03c3\u03b9\u03bc\u03bf\u03c0\u03bf\u03b9\u03ce\u03bd\u03c4\u03b1\u03c2 \u03c4\u03bf \u03b4\u03b5\u03af\u03ba\u03c4\u03b7 (<strong>top<\/strong>) \u03bf \u03bf\u03c0\u03bf\u03af\u03bf\u03c2 \u03b4\u03b5\u03af\u03c7\u03bd\u03b5\u03b9 \u03c4\u03b7 \u03b8\u03ad\u03c3\u03b7 \u03c4\u03bf\u03c5 \u03c3\u03c4\u03bf\u03b9\u03c7\u03b5\u03af\u03bf\u03c5 \u03c0\u03bf\u03c5 \u03b5\u03b9\u03c3\u03ae\u03bb\u03b8\u03b5 \u03c4\u03b5\u03bb\u03b5\u03c5\u03c4\u03b1\u03af\u03bf. \u0393\u03b9\u03b1 \u03bd\u03b1 \u03b5\u03b9\u03c3\u03b1\u03c7\u03b8\u03b5\u03af \u03ad\u03bd\u03b1 \u03bd\u03ad\u03bf \u03c3\u03c4\u03bf\u03b9\u03c7\u03b5\u03af\u03bf \u03bc\u03b5 \u03c4\u03b7 \u03bc\u03ad\u03b8\u03bf\u03b4\u03bf \u03ce\u03b8\u03b7\u03c3\u03b7\u03c2 (<strong>push<\/strong>) \u03b5\u03bb\u03ad\u03b3\u03c7\u03b5\u03c4\u03b1\u03b9 \u03b5\u03ac\u03bd \u03c5\u03c0\u03ac\u03c1\u03c7\u03b5\u03b9 \u03c7\u03ce\u03c1\u03bf\u03c2 \u03c3\u03c4\u03bf \u03c4\u03ad\u03bb\u03bf\u03c2 \u03c4\u03b7\u03c2 \u03c3\u03c4\u03bf\u03af\u03b2\u03b1\u03c2, \u03c3\u03c4\u03b7 \u03c3\u03c5\u03bd\u03ad\u03c7\u03b5\u03b9\u03b1 \u03b1\u03c5\u03be\u03ac\u03bd\u03b5\u03c4\u03b1\u03b9 \u03bf \u03b4\u03b5\u03af\u03ba\u03c4\u03b7\u03c2 top \u03ba\u03b1\u03c4\u03ac \u03ad\u03bd\u03b1(1) \u03ba\u03b1\u03b9 \u03b5\u03b9\u03c3\u03ac\u03b3\u03b5\u03c4\u03b1\u03b9 \u03c4\u03bf \u03c3\u03c4\u03bf\u03b9\u03c7\u03b5\u03af\u03bf \u03c3\u03c4\u03b7 \u03bd\u03ad\u03b1 \u03b8\u03ad\u03c3\u03b7.<\/p>\n<p><img loading=\"lazy\" class=\" wp-image-1004 aligncenter\" src=\"http:\/\/users.sch.gr\/chatzipap\/wp-content\/uploads\/2020\/12\/s_push-225x300.jpg\" alt=\"\" width=\"608\" height=\"811\" srcset=\"http:\/\/users.sch.gr\/chatzipap\/wp-content\/uploads\/2020\/12\/s_push-225x300.jpg 225w, http:\/\/users.sch.gr\/chatzipap\/wp-content\/uploads\/2020\/12\/s_push-113x150.jpg 113w, http:\/\/users.sch.gr\/chatzipap\/wp-content\/uploads\/2020\/12\/s_push.jpg 738w\" sizes=\"(max-width: 608px) 100vw, 608px\" \/><\/p>\n<h5>2.2 \u0391\u03c0\u03ce\u03b8\u03b7\u03c3\u03b7 \u03a3\u03c4\u03bf\u03b9\u03c7\u03b5\u03af\u03bf\u03c5<\/h5>\n<p style=\"text-align: justify;\">\u0391\u03c6\u03bf\u03cd \u03b5\u03bb\u03ad\u03b3\u03be\u03bf\u03c5\u03bc\u03b5 \u03b5\u03ac\u03bd \u03b7 \u03c3\u03c4\u03bf\u03af\u03b2\u03b1 \u03ad\u03c7\u03b5\u03b9 \u03c3\u03c4\u03bf\u03b9\u03c7\u03b5\u03af\u03b1 \u03b5\u03be\u03ac\u03b3\u03bf\u03c5\u03bc\u03b5 \u03c4\u03bf \u03c3\u03c4\u03bf\u03b9\u03c7\u03b5\u03af\u03bf \u03c0\u03bf\u03c5 \u03b2\u03c1\u03af\u03c3\u03ba\u03b5\u03c4\u03b1\u03b9 \u03c3\u03c4\u03b7 \u03b8\u03ad\u03c3\u03b7 (<strong>top<\/strong>) \u03bc\u03b5 \u03c4\u03b7 \u03bc\u03ad\u03b8\u03bf\u03b4\u03bf \u03b1\u03c0\u03ce\u03b8\u03b7\u03c3\u03b7\u03c2 (<strong>pop<\/strong>) \u03ba\u03b1\u03b9 \u03c3\u03c4\u03b7 \u03c3\u03c5\u03bd\u03ad\u03c7\u03b5\u03b9\u03b1 \u03bc\u03b5\u03b9\u03ce\u03bd\u03bf\u03c5\u03bc\u03b5 \u03c4\u03bf \u03b4\u03b5\u03af\u03ba\u03c4\u03b7 \u03ba\u03b1\u03c4\u03ac \u03ad\u03bd\u03b1(1) \u03ce\u03c3\u03c4\u03b5 \u03bd\u03b1 \u03b4\u03b5\u03af\u03c7\u03bd\u03b5\u03b9 \u03c4\u03bf \u03b5\u03c0\u03cc\u03bc\u03b5\u03bd\u03bf \u03c3\u03c4\u03b7 \u03c3\u03b5\u03b9\u03c1\u03ac \u03c3\u03c4\u03bf\u03b9\u03c7\u03b5\u03af\u03bf \u03b3\u03b9\u03b1 \u03b5\u03be\u03b1\u03b3\u03c9\u03b3\u03ae.<\/p>\n<p><img loading=\"lazy\" class=\" wp-image-1003 aligncenter\" src=\"http:\/\/users.sch.gr\/chatzipap\/wp-content\/uploads\/2020\/12\/s_pop-233x300.jpg\" alt=\"\" width=\"588\" height=\"757\" srcset=\"http:\/\/users.sch.gr\/chatzipap\/wp-content\/uploads\/2020\/12\/s_pop-233x300.jpg 233w, http:\/\/users.sch.gr\/chatzipap\/wp-content\/uploads\/2020\/12\/s_pop-116x150.jpg 116w, http:\/\/users.sch.gr\/chatzipap\/wp-content\/uploads\/2020\/12\/s_pop.jpg 735w\" sizes=\"(max-width: 588px) 100vw, 588px\" \/><\/p>\n<h4>3. \u0394\u03b7\u03bc\u03b9\u03bf\u03c5\u03c1\u03b3\u03af\u03b1 \u03b1\u03bd\u03c4\u03b9\u03ba\u03b5\u03b9\u03bc\u03ad\u03bd\u03c9\u03bd &amp; \u039c\u03ad\u03b8\u03bf\u03b4\u03bf\u03b9 \u03ba\u03bb\u03ac\u03c3\u03b7\u03c2<\/h4>\n<p style=\"text-align: justify;\">\u0391\u03ba\u03bf\u03bb\u03bf\u03c5\u03b8\u03b5\u03af \u03b7 \u03c5\u03bb\u03bf\u03c0\u03bf\u03af\u03b7\u03c3\u03b7 \u03c4\u03b7\u03c2 \u03ba\u03bb\u03ac\u03c3\u03b7\u03c2 (<strong>Stack<\/strong>) \u03c4\u03b7\u03c2 \u0394\u03bf\u03bc\u03ae\u03c2 \u03c4\u03b7\u03c2 \u03c3\u03c4\u03bf\u03af\u03b2\u03b1\u03c2 \u03ba\u03b1\u03b8\u03ce\u03c2 \u03ba\u03b1\u03b9 \u03b7 \u03c0\u03b5\u03c1\u03b9\u03b3\u03c1\u03b1\u03c6\u03ae \u03c4\u03c9\u03bd \u03b4\u03b9\u03b1\u03b8\u03ad\u03c3\u03b9\u03bc\u03c9\u03bd \u03bc\u03b5\u03b8\u03cc\u03b4\u03c9\u03bd \u03c4\u03b7\u03c2 \u03c4\u03b9\u03c2 \u03bf\u03c0\u03bf\u03af\u03b5\u03c2 \u03bc\u03c0\u03bf\u03c1\u03b5\u03af\u03c4\u03b5 \u03bd\u03b1 \u03c7\u03c1\u03b7\u03c3\u03b9\u03bc\u03bf\u03c0\u03bf\u03b9\u03ae\u03c3\u03b5\u03c4\u03b5 OnLine \u03b1\u03ba\u03bf\u03bb\u03bf\u03c5\u03b8\u03ce\u03bd\u03c4\u03b1\u03c2 \u03c4\u03b9\u03c2 \u03bf\u03b4\u03b7\u03b3\u03af\u03b5\u03c2 \u03ba\u03b1\u03b9 \u03c3\u03c5\u03bd\u03c4\u03ac\u03c3\u03c3\u03bf\u03bd\u03c4\u03b1\u03c2 \u03c4\u03b9\u03c2 \u03ba\u03b1\u03c4\u03ac\u03bb\u03bb\u03b7\u03bb\u03b5\u03c2 \u03b5\u03bd\u03c4\u03bf\u03bb\u03ad\u03c2 \u03c3\u03c4\u03bf \u03c0\u03b1\u03c1\u03ac\u03b8\u03c5\u03c1\u03bf \u03c4\u03bf\u03c5 &#8220;<strong>repl.it<\/strong>&#8221; \u03c0\u03bf\u03c5 \u03b1\u03ba\u03bf\u03bb\u03bf\u03c5\u03b8\u03b5\u03af. \u0397 \u03b5\u03bc\u03c6\u03ac\u03bd\u03b9\u03c3\u03b7 \u03c4\u03b7\u03c2 \u03c3\u03c4\u03bf\u03af\u03b2\u03b1\u03c2 \u03c0\u03b1\u03c1\u03bf\u03c5\u03c3\u03b9\u03ac\u03b6\u03b5\u03c4\u03b1\u03b9 \u03bc\u03b5 \u03bc\u03af\u03b1 \u03c0\u03b5\u03c1\u03b9\u03bf\u03c1\u03b9\u03c3\u03bc\u03ad\u03bd\u03b7 \u03bf\u03c0\u03c4\u03b9\u03ba\u03bf\u03c0\u03bf\u03af\u03b7\u03c3\u03b7 \u03b3\u03b9\u03b1 \u03c4\u03b7\u03bd \u03ba\u03b1\u03bb\u03cd\u03c4\u03b5\u03c1\u03b7 \u03ba\u03b1\u03c4\u03b1\u03bd\u03cc\u03b7\u03c3\u03b7 \u03c4\u03b7\u03c2 \u03b4\u03bf\u03bc\u03ae\u03c2.<\/p>\n<ul>\n<li><span style=\"font-family: 'andale mono', monospace;\"><strong>s = Stack(10)<\/strong> # \u0394\u03b7\u03bc\u03b9\u03bf\u03c5\u03c1\u03b3\u03af\u03b1 \u03c3\u03c4\u03bf\u03af\u03b2\u03b1\u03c2 10 \u03b8\u03ad\u03c3\u03b5\u03c9\u03bd \u03bc\u03b5 \u03cc\u03bd\u03bf\u03bc\u03b1 s<\/span><\/li>\n<li><span style=\"font-family: 'andale mono', monospace;\"><strong>s.populate(8)<\/strong> # \u0393\u03ad\u03bc\u03b9\u03c3\u03bc\u03b1 \u03c4\u03b7\u03c2 \u03c3\u03c4\u03bf\u03af\u03b2\u03b1\u03c2 \u03bc\u03b5 8 \u03c4\u03c5\u03c7\u03b1\u03af\u03bf\u03c5\u03c2 \u03c7\u03b1\u03c1\u03b1\u03ba\u03c4\u03ae\u03c1\u03b5\u03c2<\/span><\/li>\n<li><span style=\"font-family: 'andale mono', monospace;\"><strong>s.push(&#8216;A&#8217;)<\/strong> # \u0395\u03b9\u03c3\u03b1\u03b3\u03c9\u03b3\u03ae \u03c4\u03bf\u03c5 \u03c7\u03b1\u03c1\u03b1\u03ba\u03c4\u03ae\u03c1\u03b1 \u0391 \u03c3\u03c4\u03b7\u03bd \u03c3\u03c4\u03bf\u03af\u03b2\u03b1&#8221;<\/span><\/li>\n<li><span style=\"font-family: 'andale mono', monospace;\"><strong>s.pop()<\/strong> # \u0395\u03be\u03b1\u03b3\u03c9\u03b3\u03ae \u03c3\u03c4\u03bf\u03b9\u03c7\u03b5\u03af\u03bf\u03c5 \u03b1\u03c0\u03cc \u03c4\u03b7\u03bd \u03c3\u03c4\u03bf\u03af\u03b2\u03b1<\/span><\/li>\n<li><span style=\"font-family: 'andale mono', monospace;\"><strong>s.clear()<\/strong> # \u0386\u03b4\u03b5\u03b9\u03b1\u03c3\u03bc\u03b1 \u03c4\u03b7\u03c2 \u03c3\u03c4\u03bf\u03af\u03b2\u03b1\u03c2 &amp; \u03b5\u03bc\u03c6\u03ac\u03bd\u03b9\u03c3\u03b7 \u03c3\u03c4\u03bf\u03b9\u03c7\u03b5\u03af\u03c9\u03bd<\/span><\/li>\n<li><span style=\"font-family: 'andale mono', monospace;\"><strong>s.peek()<\/strong> # \u03a4\u03bf \u03c3\u03c4\u03bf\u03b9\u03c7\u03b5\u03af\u03bf \u03ba\u03bf\u03c1\u03c5\u03c6\u03ae\u03c2 \u03c7\u03c9\u03c1\u03af\u03c2 \u03bd\u03b1 \u03b4\u03b9\u03b1\u03b3\u03c1\u03b1\u03c6\u03b5\u03af \u03b1\u03c0\u03cc \u03c4\u03b7 \u03c3\u03c4\u03bf\u03af\u03b2\u03b1<\/span><\/li>\n<li><span style=\"font-family: 'andale mono', monospace;\"><strong>s.is_empty()<\/strong> # \u0388\u03bb\u03b5\u03b3\u03c7\u03bf\u03c2 \u03b5\u03ac\u03bd \u03b7 \u03c3\u03c4\u03bf\u03af\u03b2\u03b1 \u03b5\u03af\u03bd\u03b1\u03b9 \u0386\u03b4\u03b5\u03b9\u03b1<\/span><\/li>\n<li><span style=\"font-family: 'andale mono', monospace;\"><strong>s.is_full()<\/strong> # \u0388\u03bb\u03b5\u03b3\u03c7\u03bf\u03c2 \u03b5\u03ac\u03bd \u03b7 \u03c3\u03c4\u03bf\u03af\u03b2\u03b1 \u03b5\u03af\u03bd\u03b1\u03b9 \u03b3\u03b5\u03bc\u03ac\u03c4\u03b7<\/span><\/li>\n<\/ul>\n<p><strong>\u03a0\u03b1\u03c4\u03ae\u03c3\u03c4\u03b5<\/strong> \u03c3\u03c4\u03bf \u03c0\u03b1\u03c1\u03ac\u03b8\u03c5\u03c1\u03bf \u03c0\u03bf\u03c5 \u03b1\u03ba\u03bf\u03bb\u03bf\u03c5\u03b8\u03b5\u03af \u03c4\u03bf \u03c0\u03c1\u03ac\u03c3\u03b9\u03bd\u03bf \u03b2\u03b5\u03bb\u03ac\u03ba\u03b9 &#8220;<span style=\"color: #339966; font-size: 36pt;\"><strong>\u00a0<span style=\"color: #339966;\">|&gt;<\/span><\/strong><\/span>&#8221; \u03c3\u03c4\u03b7 \u03b3\u03c1\u03b1\u03bc\u03bc\u03ae \u03b5\u03bd\u03c4\u03bf\u03bb\u03ce\u03bd (command shell) \u03bc\u03c0\u03bf\u03c1\u03b5\u03af\u03c4\u03b5 \u03bd\u03b1 \u03b4\u03ce\u03c3\u03b5\u03c4\u03b5 \u03c4\u03b9\u03c2 \u03b4\u03b9\u03ba\u03ad\u03c2 \u03c3\u03b1\u03c2 \u03b5\u03bd\u03c4\u03bf\u03bb\u03ad\u03c2<\/p>\n<p style=\"text-align: justify;\"><iframe loading=\"lazy\" width=\"100%\" height=\"600px\" src=\"https:\/\/repl.it\/@chatzipapwork\/Stack?lite=true&amp;outputonly=true\" scrolling=\"no\" frameborder=\"no\" allowtransparency=\"true\" allowfullscreen=\"allowfullscreen\" sandbox=\"allow-forms allow-pointer-lock allow-popups allow-same-origin allow-scripts allow-modals\"><\/iframe><\/p>\n","protected":false},"excerpt":{"rendered":"<p>1. \u03a4\u03b9 \u03b5\u03af\u03bd\u03b1\u03b9 \u03a3\u03c4\u03bf\u03af\u03b2\u03b1 \u0397\u00a0 \u03c3\u03c4\u03bf\u03af\u03b2\u03b1 \u03c3\u03c4\u03b7\u03bd \u03c0\u03bb\u03b7\u03c1\u03bf\u03c6\u03bf\u03c1\u03b9\u03ba\u03ae \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 \u03bc\u03b5 \u03c4\u03b7 \u03bc\u03bf\u03c1\u03c6\u03ae \u03c3\u03c5\u03bb\u03bb\u03bf\u03b3\u03ae\u03c2 \u03c3\u03c4\u03bf\u03b9\u03c7\u03b5\u03af\u03c9\u03bd \u03c0\u03bf\u03c5 \u03b2\u03c1\u03af\u03c3\u03ba\u03bf\u03bd\u03c4\u03b1\u03b9 \u03c3\u03b5 \u03bc\u03af\u03b1 \u03c3\u03b5\u03b9\u03c1\u03ac. \u0397 \u03b9\u03b4\u03b9\u03b1\u03b9\u03c4\u03b5\u03c1\u03cc\u03c4\u03b7\u03c4\u03b1 \u03cc\u03bc\u03c9\u03c2 \u03c4\u03b7\u03c2 \u03b4\u03bf\u03bc\u03ae\u03c2 \u03b1\u03c5\u03c4\u03ae\u03c2 \u03b5\u03af\u03bd\u03b1\u03b9\u00a0 \u03cc\u03c4\u03b9 \u03b7 \u03b5\u03b9\u03c3\u03b1\u03b3\u03c9\u03b3\u03ae \u03ba\u03b1\u03b9 \u03b7 \u03b5\u03be\u03b1\u03b3\u03c9\u03b3\u03ae \u03c3\u03c4\u03bf\u03b9\u03c7\u03b5\u03af\u03c9\u03bd\u00a0 \u03b3\u03af\u03bd\u03b5\u03c4\u03b1\u03b9 \u03bc\u03cc\u03bd\u03bf \u03b1\u03c0\u03cc\u2026<\/p>\n<p> <a class=\"continue-reading-link\" href=\"http:\/\/users.sch.gr\/chatzipap\/stack_with_array\/\"><span>\u0394\u0399\u0391\u0392\u0391\u03a3\u03a4\u0395 \u03a4\u0397 \u03a3\u03a5\u039d\u0395\u03a7\u0395\u0399\u0391<\/span><i class=\"crycon-right-dir\"><\/i><\/a> <\/p>\n","protected":false},"author":1,"featured_media":1004,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_mi_skip_tracking":false},"categories":[8],"tags":[19,20,18],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v16.5 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>\u0394\u03bf\u03bc\u03ae \u0394\u03b5\u03b4\u03bf\u03bc\u03ad\u03bd\u03c9\u03bd \u03a3\u03c4\u03bf\u03af\u03b2\u03b1\u03c2 -Virtual Stack Try it - \u03ba\u03cd\u03c1\u03b9\u03b5 \u03b4\u03b5\u03bd \u03ad\u03c7\u03c9 internet<\/title>\n<meta name=\"description\" content=\"\u039f \u03c7\u03b5\u03b9\u03c1\u03b9\u03c3\u03bc\u03cc\u03c2 \u03ba\u03b1\u03b9 \u03b7 \u03b1\u03bd\u03b1\u03c0\u03b1\u03c1\u03ac\u03c3\u03c4\u03b1\u03c3\u03b7 \u03bb\u03b5\u03b9\u03c4\u03bf\u03c5\u03c1\u03b3\u03af\u03b1\u03c2 \u03c4\u03b7\u03c2 \u03c3\u03c4\u03bf\u03af\u03b2\u03b1\u03c2 \u03b3\u03af\u03bd\u03b5\u03c4\u03b1\u03b9 \u03c7\u03c1\u03b7\u03c3\u03b9\u03bc\u03bf\u03c0\u03bf\u03b9\u03ce\u03bd\u03c4\u03b1\u03c2 \u03c3\u03c4\u03b1\u03c4\u03b9\u03ba\u03ae \u03b4\u03bf\u03bc\u03ae \u03b4\u03b5\u03b4\u03bf\u03bc\u03ad\u03bd\u03c9\u03bd \u03ba\u03b1\u03b9 \u03ad\u03bd\u03b1 \u03b4\u03b5\u03af\u03ba\u03c4\u03b7 \u03bf \u03bf\u03c0\u03bf\u03af\u03bf\u03c2 \u03b4\u03b5\u03af\u03c7\u03bd\u03b5\u03b9 \u03c4\u03bf \u03c4\u03ad\u03bb\u03bf\u03c2 \u03c4\u03b7\u03c2 \u03c3\u03c4\u03bf\u03af\u03b2\u03b1\u03c2 %\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"http:\/\/users.sch.gr\/chatzipap\/stack_with_array\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"\u0394\u03bf\u03bc\u03ae \u0394\u03b5\u03b4\u03bf\u03bc\u03ad\u03bd\u03c9\u03bd \u03a3\u03c4\u03bf\u03af\u03b2\u03b1\u03c2 -Virtual Stack Try it - \u03ba\u03cd\u03c1\u03b9\u03b5 \u03b4\u03b5\u03bd \u03ad\u03c7\u03c9 internet\" \/>\n<meta property=\"og:description\" content=\"\u039f \u03c7\u03b5\u03b9\u03c1\u03b9\u03c3\u03bc\u03cc\u03c2 \u03ba\u03b1\u03b9 \u03b7 \u03b1\u03bd\u03b1\u03c0\u03b1\u03c1\u03ac\u03c3\u03c4\u03b1\u03c3\u03b7 \u03bb\u03b5\u03b9\u03c4\u03bf\u03c5\u03c1\u03b3\u03af\u03b1\u03c2 \u03c4\u03b7\u03c2 \u03c3\u03c4\u03bf\u03af\u03b2\u03b1\u03c2 \u03b3\u03af\u03bd\u03b5\u03c4\u03b1\u03b9 \u03c7\u03c1\u03b7\u03c3\u03b9\u03bc\u03bf\u03c0\u03bf\u03b9\u03ce\u03bd\u03c4\u03b1\u03c2 \u03c3\u03c4\u03b1\u03c4\u03b9\u03ba\u03ae \u03b4\u03bf\u03bc\u03ae \u03b4\u03b5\u03b4\u03bf\u03bc\u03ad\u03bd\u03c9\u03bd \u03ba\u03b1\u03b9 \u03ad\u03bd\u03b1 \u03b4\u03b5\u03af\u03ba\u03c4\u03b7 \u03bf \u03bf\u03c0\u03bf\u03af\u03bf\u03c2 \u03b4\u03b5\u03af\u03c7\u03bd\u03b5\u03b9 \u03c4\u03bf \u03c4\u03ad\u03bb\u03bf\u03c2 \u03c4\u03b7\u03c2 \u03c3\u03c4\u03bf\u03af\u03b2\u03b1\u03c2 %\" \/>\n<meta property=\"og:url\" content=\"http:\/\/users.sch.gr\/chatzipap\/stack_with_array\/\" \/>\n<meta property=\"og:site_name\" content=\"\u03ba\u03cd\u03c1\u03b9\u03b5 \u03b4\u03b5\u03bd \u03ad\u03c7\u03c9 internet\" \/>\n<meta property=\"article:published_time\" content=\"2020-12-14T20:47:55+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2021-04-07T23:51:23+00:00\" \/>\n<meta property=\"og:image\" content=\"http:\/\/users.sch.gr\/chatzipap\/wp-content\/uploads\/2020\/12\/s_push.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"738\" \/>\n\t<meta property=\"og:image:height\" content=\"983\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data1\" content=\"4 minutes\" \/>\n<script type=\"application\/ld+json\" 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