{"id":49893,"date":"2025-05-22T15:49:02","date_gmt":"2025-05-22T10:19:02","guid":{"rendered":"https:\/\/www.iquanta.in\/blog\/?p=49893"},"modified":"2025-05-22T15:51:40","modified_gmt":"2025-05-22T10:21:40","slug":"deletion-in-stack-a-complete-guide-for-beginners","status":"publish","type":"post","link":"https:\/\/www.iquanta.in\/blog\/deletion-in-stack-a-complete-guide-for-beginners\/","title":{"rendered":"Deletion in Stack: A Complete Guide For Beginners"},"content":{"rendered":"\n<p><a href=\"https:\/\/www.iquanta.in\/blog\/what-is-stack-in-data-structure-types-and-real-world-examples\/\">Stacks<\/a> are one of the most essential data structures you will come across in computer science. Whether you are preparing for technical interviews or learning how real-world programs manage memory and function calls understanding deletion in stack is a must. This concept plays a key role in many practical applications such as undo features browser history and expression evaluation. In this blog we will walk you through what stack deletion means how it works and how you can implement it in popular programming languages like Python C++ and Java.<\/p>\n\n\n\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_77 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Table of Contents<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table of Content\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/www.iquanta.in\/blog\/deletion-in-stack-a-complete-guide-for-beginners\/#What_is_Stack\" >What is Stack?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/www.iquanta.in\/blog\/deletion-in-stack-a-complete-guide-for-beginners\/#What_is_Deletion_in_Stack\" >What is Deletion in Stack?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/www.iquanta.in\/blog\/deletion-in-stack-a-complete-guide-for-beginners\/#Deletion_in_Stack_Algorithm\" >Deletion in Stack Algorithm<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/www.iquanta.in\/blog\/deletion-in-stack-a-complete-guide-for-beginners\/#Code_Examples_for_Deletion_in_Stack\" >Code Examples for Deletion in Stack<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/www.iquanta.in\/blog\/deletion-in-stack-a-complete-guide-for-beginners\/#Deletion_in_Stack_using_Python\" >Deletion in Stack using Python<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/www.iquanta.in\/blog\/deletion-in-stack-a-complete-guide-for-beginners\/#Deletion_in_Stack_using_C\" >Deletion in Stack using C++<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/www.iquanta.in\/blog\/deletion-in-stack-a-complete-guide-for-beginners\/#Applications_of_Stack_Deletion\" >Applications of Stack Deletion<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/www.iquanta.in\/blog\/deletion-in-stack-a-complete-guide-for-beginners\/#Frequently_Asked_Questions_FAQs\" >Frequently Asked Questions (FAQs)<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/www.iquanta.in\/blog\/deletion-in-stack-a-complete-guide-for-beginners\/#What_is_deletion_in_stack\" >What is deletion in stack?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/www.iquanta.in\/blog\/deletion-in-stack-a-complete-guide-for-beginners\/#What_is_the_time_complexity_of_deletion_in_a_stack\" >What is the time complexity of deletion in a stack<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-11\" href=\"https:\/\/www.iquanta.in\/blog\/deletion-in-stack-a-complete-guide-for-beginners\/#Can_we_delete_elements_from_the_bottom_of_the_stack\" >Can we delete elements from the bottom of the stack<\/a><\/li><\/ul><\/li><\/ul><\/nav><\/div>\n<h2 class=\"wp-block-heading\" id=\"h-what-is-stack\"><span class=\"ez-toc-section\" id=\"What_is_Stack\"><\/span><strong>What is Stack?<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>A stack is a simple yet powerful data structure that works on the principle of Last In First Out or LIFO. This means that the last element added to the stack is the first one to be removed. Think of a stack as a pile of plates. You place new plates on top and when you need one you take the top plate off first. <\/p>\n\n\n\n<p>You cannot access the plate at the bottom unless you remove all the ones above it. This behavior makes stacks useful in situations where you want to reverse data track states or manage nested function calls. Common applications of stacks include evaluating expressions parsing code and handling browser history or undo features in text editors.<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><a href=\"https:\/\/chat.whatsapp.com\/B6weknl7133BQXjPva0pgB\"><img fetchpriority=\"high\" decoding=\"async\" width=\"875\" height=\"142\" src=\"https:\/\/www.iquanta.in\/blog\/wp-content\/uploads\/2025\/05\/image-126.png\" alt=\"deletion in stack\" class=\"wp-image-49732\" srcset=\"https:\/\/www.iquanta.in\/blog\/wp-content\/uploads\/2025\/05\/image-126.png 875w, https:\/\/www.iquanta.in\/blog\/wp-content\/uploads\/2025\/05\/image-126-300x49.png 300w, https:\/\/www.iquanta.in\/blog\/wp-content\/uploads\/2025\/05\/image-126-768x125.png 768w, https:\/\/www.iquanta.in\/blog\/wp-content\/uploads\/2025\/05\/image-126-150x24.png 150w, https:\/\/www.iquanta.in\/blog\/wp-content\/uploads\/2025\/05\/image-126-696x113.png 696w\" sizes=\"(max-width: 875px) 100vw, 875px\" \/><\/a><\/figure><\/div>\n\n\n<h2 class=\"wp-block-heading\" id=\"h-what-is-deletion-in-stack\"><span class=\"ez-toc-section\" id=\"What_is_Deletion_in_Stack\"><\/span><strong>What is Deletion in Stack?<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Deletion in stack refers to the process of removing the top element from the stack. This operation is known as the pop operation. Since stacks follow the Last In First Out structure you can only remove the element that was most recently added. If the stack is empty and you try to delete an element an underflow condition occurs which typically results in an error or warning. <\/p>\n\n\n\n<p>This operation is commonly used in algorithms that involve backtracking or reversing actions such as solving mazes and implementing undo functionalities. In short deletion in stack helps you manage data in reverse order allowing you to clean up or retrieve items in the opposite sequence they were added.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-deletion-in-stack-algorithm\"><span class=\"ez-toc-section\" id=\"Deletion_in_Stack_Algorithm\"><\/span><strong>Deletion in Stack Algorithm<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Check if the stack is empty<br>Before trying to delete an element always check whether the stack has any elements. If it is empty there is nothing to delete and this should trigger an underflow condition.<\/p>\n\n\n\n<p>Access the top element<br>Identify the element at the top of the stack. This is the element that will be removed during the deletion process.<\/p>\n\n\n\n<p>Remove the top element<br>Adjust the stack so that it no longer contains the top element. If you are using an array this means decreasing the top index. If you are using a dynamic data structure like a linked list you will update the pointer to exclude the top node.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-code-examples-for-deletion-in-stack\"><span class=\"ez-toc-section\" id=\"Code_Examples_for_Deletion_in_Stack\"><\/span><strong>Code Examples for Deletion in Stack<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Deletion_in_Stack_using_Python\"><\/span><strong>Deletion in Stack using Python<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code>stack = &#091;10, 20, 30]\n\ndef pop():\n    if not stack:\n        print(\"Stack Underflow! Cannot delete from an empty stack.\")\n    else:\n        removed = stack.pop()\n        print(f\"Deleted {removed} from stack.\")\n\npop()\nprint(\"Current Stack:\", stack)<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Deletion_in_Stack_using_C\"><\/span><strong>Deletion in Stack using C++<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img decoding=\"async\" width=\"875\" height=\"142\" src=\"https:\/\/www.iquanta.in\/blog\/wp-content\/uploads\/2025\/05\/image-142.png\" alt=\"\" class=\"wp-image-49901\" srcset=\"https:\/\/www.iquanta.in\/blog\/wp-content\/uploads\/2025\/05\/image-142.png 875w, https:\/\/www.iquanta.in\/blog\/wp-content\/uploads\/2025\/05\/image-142-300x49.png 300w, https:\/\/www.iquanta.in\/blog\/wp-content\/uploads\/2025\/05\/image-142-768x125.png 768w, https:\/\/www.iquanta.in\/blog\/wp-content\/uploads\/2025\/05\/image-142-150x24.png 150w, https:\/\/www.iquanta.in\/blog\/wp-content\/uploads\/2025\/05\/image-142-696x113.png 696w\" sizes=\"(max-width: 875px) 100vw, 875px\" \/><\/figure><\/div>\n\n\n<pre class=\"wp-block-code\"><code>#include &lt;iostream&gt;\r\n#include &lt;stack&gt;\r\nusing namespace std;\r\n\r\nint main() {\r\n    stack&lt;int&gt; s;\r\n    s.push(10);\r\n    s.push(20);\r\n    s.push(30);\r\n\r\n    if (!s.empty()) {\r\n        s.pop();\r\n        cout &lt;&lt; \"Top element deleted successfully.\" &lt;&lt; endl;\r\n    } else {\r\n        cout &lt;&lt; \"Stack Underflow! Cannot delete from an empty stack.\" &lt;&lt; endl;\r\n    }\r\n\r\n    if (!s.empty()) {\r\n        cout &lt;&lt; \"Current Top Element: \" &lt;&lt; s.top() &lt;&lt; endl;\r\n    }\r\n\r\n    return 0;\r\n}\r\n<\/code><\/pre>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Applications_of_Stack_Deletion\"><\/span><strong>Applications of Stack Deletion<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<ul>\n<li>Backtracking algorithms like solving mazes or puzzles<\/li>\n\n\n\n<li>Undo and redo functionality in software applications<\/li>\n\n\n\n<li>Function call management during recursive operations<\/li>\n\n\n\n<li>Parsing expressions in compilers and interpreters<\/li>\n\n\n\n<li>Managing browser history or navigation states<\/li>\n<\/ul>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><a href=\"https:\/\/chat.whatsapp.com\/B6weknl7133BQXjPva0pgB\"><img decoding=\"async\" width=\"875\" height=\"142\" src=\"https:\/\/www.iquanta.in\/blog\/wp-content\/uploads\/2025\/05\/image-141.png\" alt=\"\" class=\"wp-image-49900\" srcset=\"https:\/\/www.iquanta.in\/blog\/wp-content\/uploads\/2025\/05\/image-141.png 875w, https:\/\/www.iquanta.in\/blog\/wp-content\/uploads\/2025\/05\/image-141-300x49.png 300w, https:\/\/www.iquanta.in\/blog\/wp-content\/uploads\/2025\/05\/image-141-768x125.png 768w, https:\/\/www.iquanta.in\/blog\/wp-content\/uploads\/2025\/05\/image-141-150x24.png 150w, https:\/\/www.iquanta.in\/blog\/wp-content\/uploads\/2025\/05\/image-141-696x113.png 696w\" sizes=\"(max-width: 875px) 100vw, 875px\" \/><\/a><\/figure><\/div>\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Frequently_Asked_Questions_FAQs\"><\/span><strong>Frequently Asked Questions (FAQs)<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"What_is_deletion_in_stack\"><\/span><strong>What is deletion in stack?<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>Deletion in stack means removing the top element using the pop operation. It follows the Last In First Out principle so the most recently added item is the first one to be removed.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"What_is_the_time_complexity_of_deletion_in_a_stack\"><\/span><strong>What is the time complexity of deletion in a stack<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>The time complexity of deletion in a stack is O(1).<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Can_we_delete_elements_from_the_bottom_of_the_stack\"><\/span><strong>Can we delete elements from the bottom of the stack<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>No you cannot delete elements from the bottom directly. Stacks only allow access to the top element. To delete something from the bottom you must first remove all the elements above it.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Stacks are one of the most essential data structures you will come across in computer science. Whether you are preparing for technical interviews or learning how real-world programs manage memory and function calls understanding deletion in stack is a must. This concept plays a key role in many practical applications such as undo features browser [&hellip;]<\/p>\n","protected":false},"author":560,"featured_media":49898,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1075,1073],"tags":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v21.4 (Yoast SEO v21.9.1) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Deletion in Stack: A Complete Guide For Beginners - iQuanta<\/title>\n<meta name=\"description\" content=\"In this blog we will walk you through deletion in stack also how it works and how you can implement it in popular programming languages.\" \/>\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.iquanta.in\/blog\/deletion-in-stack-a-complete-guide-for-beginners\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Deletion in Stack: A Complete Guide For Beginners\" \/>\n<meta property=\"og:description\" content=\"In this blog we will walk you through deletion in stack also how it works and how you can implement it in popular programming languages.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.iquanta.in\/blog\/deletion-in-stack-a-complete-guide-for-beginners\/\" \/>\n<meta property=\"og:site_name\" content=\"iQuanta\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/facebook.com\/iquanta.in\" \/>\n<meta property=\"article:published_time\" content=\"2025-05-22T10:19:02+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2025-05-22T10:21:40+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.iquanta.in\/blog\/wp-content\/uploads\/2025\/05\/WhatsApp-Image-2025-05-22-at-3.00.30-PM.jpeg\" \/>\n\t<meta property=\"og:image:width\" content=\"1600\" \/>\n\t<meta property=\"og:image:height\" content=\"900\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"Nidhi Goswami\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Nidhi Goswami\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"4 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/www.iquanta.in\/blog\/deletion-in-stack-a-complete-guide-for-beginners\/#article\",\"isPartOf\":{\"@id\":\"https:\/\/www.iquanta.in\/blog\/deletion-in-stack-a-complete-guide-for-beginners\/\"},\"author\":{\"name\":\"Nidhi Goswami\",\"@id\":\"https:\/\/www.iquanta.in\/blog\/#\/schema\/person\/ec8c8c25d0526dd86557b6fed064f7f3\"},\"headline\":\"Deletion in Stack: A Complete Guide For Beginners\",\"datePublished\":\"2025-05-22T10:19:02+00:00\",\"dateModified\":\"2025-05-22T10:21:40+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/www.iquanta.in\/blog\/deletion-in-stack-a-complete-guide-for-beginners\/\"},\"wordCount\":608,\"publisher\":{\"@id\":\"https:\/\/www.iquanta.in\/blog\/#organization\"},\"articleSection\":[\"DSA and Competitive Programming\",\"iSkills\"],\"inLanguage\":\"en-US\"},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.iquanta.in\/blog\/deletion-in-stack-a-complete-guide-for-beginners\/\",\"url\":\"https:\/\/www.iquanta.in\/blog\/deletion-in-stack-a-complete-guide-for-beginners\/\",\"name\":\"Deletion in Stack: A Complete Guide For Beginners - 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