{"id":189,"date":"2025-10-05T19:14:40","date_gmt":"2025-10-05T13:44:40","guid":{"rendered":"https:\/\/pickmyfuture.com\/?p=189"},"modified":"2025-10-05T19:14:42","modified_gmt":"2025-10-05T13:44:42","slug":"top-data-structure-algorithm-questions","status":"publish","type":"post","link":"https:\/\/pickmyfuture.com\/hi\/top-data-structure-algorithm-questions\/","title":{"rendered":"\u0909\u0926\u093e\u0939\u0930\u0923\u094b\u0902 \u0938\u0939\u093f\u0924 \u0921\u0947\u091f\u093e \u0938\u0902\u0930\u091a\u0928\u093e \u090f\u0932\u094d\u0917\u094b\u0930\u093f\u0926\u092e \u0938\u0947 \u0938\u0902\u092c\u0902\u0927\u093f\u0924 \u0936\u0940\u0930\u094d\u0937 \u0938\u093e\u0915\u094d\u0937\u093e\u0924\u094d\u0915\u093e\u0930 \u092a\u094d\u0930\u0936\u094d\u0928"},"content":{"rendered":"<p>When you sit down for a coding interview, it doesn\u2019t take long before the interviewer throws a question on data structures or algorithms your way. These data structure algorithm interview questions aren\u2019t just about writing a few lines of code. They\u2019re designed to see how well you understand the basics, how you approach solving problems, and whether you can come up with clean and efficient solutions under time pressure.<\/p>\n\n\n\n<p>In this guide, I\u2019ll walk you through some of the most commonly asked questions in interviews. Each one comes with a short explanation and a simple example in Python so that you can practice right away.<\/p>\n\n\n\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_82_2 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\">\u0935\u093f\u0937\u092f\u0938\u0942\u091a\u0940<\/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;\">\u091f\u0949\u0917\u0932<\/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:\/\/pickmyfuture.com\/hi\/top-data-structure-algorithm-questions\/#1_Reverse_a_Linked_List_In_Data_Structure_Algorithm\" >1. Reverse a Linked List In Data Structure Algorithm<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/pickmyfuture.com\/hi\/top-data-structure-algorithm-questions\/#2_Detect_a_Cycle_in_a_Linked_List\" >2. Detect a Cycle in a Linked List<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/pickmyfuture.com\/hi\/top-data-structure-algorithm-questions\/#3_Find_the_Missing_Number_in_an_Array_In_Data_Structure\" >3. Find the Missing Number in an Array In Data Structure<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/pickmyfuture.com\/hi\/top-data-structure-algorithm-questions\/#4_Implement_a_Queue_Using_Stacks\" >4. Implement a Queue Using Stacks<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/pickmyfuture.com\/hi\/top-data-structure-algorithm-questions\/#5_First_Non-Repeating_Character_in_a_String\" >5. First Non-Repeating Character in a String<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/pickmyfuture.com\/hi\/top-data-structure-algorithm-questions\/#6_Merge_Two_Sorted_Arrays\" >6. Merge Two Sorted Arrays<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/pickmyfuture.com\/hi\/top-data-structure-algorithm-questions\/#7_Min_Stack\" >7. Min Stack<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/pickmyfuture.com\/hi\/top-data-structure-algorithm-questions\/#8_Binary_Tree_Traversal\" >8. Binary Tree Traversal<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/pickmyfuture.com\/hi\/top-data-structure-algorithm-questions\/#9_Longest_Substring_Without_Repeating_Characters\" >9. Longest Substring Without Repeating Characters<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/pickmyfuture.com\/hi\/top-data-structure-algorithm-questions\/#10_Kth_Largest_Element_in_an_Array\" >10. Kth Largest Element in an Array<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-11\" href=\"https:\/\/pickmyfuture.com\/hi\/top-data-structure-algorithm-questions\/#Data_Structure_Algorithm_Interview_Final_Thoughts\" >Data Structure Algorithm Interview Final Thoughts<\/a><\/li><\/ul><\/nav><\/div>\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"1_Reverse_a_Linked_List_In_Data_Structure_Algorithm\"><\/span>1. Reverse a Linked List In Data Structure Algorithm<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p><strong>Question: Given the head of a singly linked list, reverse it.<br><\/strong><br><strong>Why it matters:<\/strong> This checks if you really understand pointers and how linked lists work.<\/p>\n\n\n\n<p>class Node:<br>&nbsp;&nbsp;&nbsp; def __init__(self, data):<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; self.data = data<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; self.next = None<br><br>def reverse_linked_list(head):<br>&nbsp;&nbsp;&nbsp; prev = None<br>&nbsp;&nbsp;&nbsp; current = head<br>&nbsp;&nbsp;&nbsp; while current:<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; nxt = current.next<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; current.next = prev<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; prev = current<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; current = nxt<br>&nbsp;&nbsp;&nbsp; return prev<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"2_Detect_a_Cycle_in_a_Linked_List\"><\/span>2. Detect a Cycle in a Linked List <span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p><strong>Question: How do you find if a linked list contains a cycle?<br><\/strong><br>This is where Floyd\u2019s Cycle Detection (Tortoise and Hare) comes in. <\/p>\n\n\n\n<p>def has_cycle(head):<br>&nbsp;&nbsp;&nbsp; slow, fast = head, head<br>&nbsp;&nbsp;&nbsp; while fast and fast.next:<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; slow = slow.next<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; fast = fast.next.next<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; if slow == fast:<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; return True<br>&nbsp;&nbsp;&nbsp; return False<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"3_Find_the_Missing_Number_in_an_Array_In_Data_Structure\"><\/span>3. Find the Missing Number in an <a href=\"https:\/\/www.geeksforgeeks.org\/dsa\/commonly-asked-data-structure-interview-questions-set-1\/\" target=\"_blank\" rel=\"noopener\">Array In Data Structure<\/a><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p><strong>Question: You have numbers from 1 to n, but one number is missing. Find it.def missing_number(nums):<br><\/strong>&nbsp;&nbsp;&nbsp; n = len(nums) + 1<br>&nbsp;&nbsp;&nbsp; total = n * (n + 1) \/\/ 2<br>&nbsp;&nbsp;&nbsp; return total &#8211; sum(nums)<br>print(missing_number([1,2,4,5]))&nbsp; # Output: 3<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"600\" height=\"555\" src=\"https:\/\/pickmyfuture.com\/wp-content\/uploads\/2025\/10\/Gemini_Generated_Image_c8od10c8od10c8od-e1759670703706.webp\" alt=\"Top Data Structure Algorithm Interview Questions with Examples\" class=\"wp-image-275\" style=\"width:328px;height:auto\" srcset=\"https:\/\/pickmyfuture.com\/wp-content\/uploads\/2025\/10\/Gemini_Generated_Image_c8od10c8od10c8od-e1759670703706.webp 600w, https:\/\/pickmyfuture.com\/wp-content\/uploads\/2025\/10\/Gemini_Generated_Image_c8od10c8od10c8od-e1759670703706-300x278.webp 300w, https:\/\/pickmyfuture.com\/wp-content\/uploads\/2025\/10\/Gemini_Generated_Image_c8od10c8od10c8od-e1759670703706-150x139.webp 150w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/><figcaption class=\"wp-element-caption\">This AI-generated image offers a concise visual breakdown of five fundamental &#8220;Top 5 DSA Interview Questions<\/figcaption><\/figure><\/div>\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"4_Implement_a_Queue_Using_Stacks\"><\/span>4. Implement a Queue Using Stacks <span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p><strong>Interviewers love to test if you can build one structure from another.<\/strong><\/p>\n\n\n\n<p>class QueueUsingStacks:<br>&nbsp;&nbsp;&nbsp; def __init__(self):<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; self.stack1 = []<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; self.stack2 = []<br><br>&nbsp;&nbsp;&nbsp; def enqueue(self, x):<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; self.stack1.append(x)<br><br>&nbsp;&nbsp;&nbsp; def dequeue(self):<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; if not self.stack2:<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; while self.stack1:<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; self.stack2.append(self.stack1.pop())<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; return self.stack2.pop() if self.stack2 else None<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"5_First_Non-Repeating_Character_in_a_String\"><\/span>5. First Non-Repeating Character in a String<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p><strong>Question: Given a string, return the first non-repeating character.<\/strong><\/p>\n\n\n\n<p>from collections import Counter<br>def first_unique_char(s):<br>&nbsp;&nbsp;&nbsp; count = Counter(s)<br>&nbsp;&nbsp;&nbsp; for ch in s:<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; if count[ch] == 1:<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; return ch<br>&nbsp;&nbsp;&nbsp; return None<br><br>print(first_unique_char(&#8220;swiss&#8221;))&nbsp; # Output: &#8216;w&#8217;<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"6_Merge_Two_Sorted_Arrays\"><\/span>6. Merge Two Sorted Arrays<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>This shows whether you can handle sorted data efficiently.<\/p>\n\n\n\n<p>def merge_sorted(arr1, arr2):<br>&nbsp;&nbsp;&nbsp; i = j = 0<br>&nbsp;&nbsp;&nbsp; merged = []<br>&nbsp;&nbsp;&nbsp; while i &lt; len(arr1) and j &lt; len(arr2):<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; if arr1[i] &lt; arr2[j]:<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; merged.append(arr1[i])<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; i += 1<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; else:<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; merged.append(arr2[j])<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; j += 1<br>&nbsp;&nbsp;&nbsp; merged.extend(arr1[i:])<br>&nbsp;&nbsp;&nbsp; merged.extend(arr2[j:])<br>&nbsp;&nbsp;&nbsp; return merged<br>print(merge_sorted([1,3,5], [2,4,6]))&nbsp;<br># Output: [1,2,3,4,5,6]<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"532\" height=\"569\" src=\"https:\/\/pickmyfuture.com\/wp-content\/uploads\/2025\/10\/Gemini_Generated_Image_osy8b5osy8b5osy8-e1759670858280.webp\" alt=\"Top Data Structure Algorithm Interview Questions with Examples\" class=\"wp-image-277\" style=\"width:368px;height:auto\" srcset=\"https:\/\/pickmyfuture.com\/wp-content\/uploads\/2025\/10\/Gemini_Generated_Image_osy8b5osy8b5osy8-e1759670858280.webp 532w, https:\/\/pickmyfuture.com\/wp-content\/uploads\/2025\/10\/Gemini_Generated_Image_osy8b5osy8b5osy8-e1759670858280-280x300.webp 280w, https:\/\/pickmyfuture.com\/wp-content\/uploads\/2025\/10\/Gemini_Generated_Image_osy8b5osy8b5osy8-e1759670858280-150x160.webp 150w\" sizes=\"auto, (max-width: 532px) 100vw, 532px\" \/><figcaption class=\"wp-element-caption\"> This AI-generated image serves as a concise visual guide to five crucial &#8220;Top 5 DSA Interview Questions<\/figcaption><\/figure><\/div>\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"7_Min_Stack\"><\/span>7. Min Stack<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p><strong>Question: Design a stack that supports push, pop, and also retrieving the minimum element in constant time.<\/strong><\/p>\n\n\n\n<p>class MinStack:<br>&nbsp;&nbsp;&nbsp; def __init__(self):<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; self.stack = []<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; self.min_stack = []<br><br>&nbsp;&nbsp;&nbsp; def push(self, x):<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; self.stack.append(x)<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; if not self.min_stack or x &lt;= self.min_stack[-1]:<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; self.min_stack.append(x)<br><br>&nbsp;&nbsp;&nbsp; def pop(self):<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; if self.stack[-1] == self.min_stack[-1]:<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; self.min_stack.pop()<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; return self.stack.pop()<br><br>&nbsp;&nbsp;&nbsp; def get_min(self):<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; return self.min_stack[-1] <\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"8_Binary_Tree_Traversal\"><\/span>8. Binary Tree Traversal <span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p><strong>One of the most basic tree problems.<\/strong><\/p>\n\n\n\n<p>class TreeNode:<br>&nbsp;&nbsp;&nbsp; def __init__(self, val=0, left=None, right=None):<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; self.val = val<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; self.left = left<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; self.right = right<br><br>def inorder(root):<br>&nbsp;&nbsp;&nbsp; if not root:<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; return []<br>&nbsp;&nbsp;&nbsp; return inorder(root.left) + [root.val] + inorder(root.right]<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"9_Longest_Substring_Without_Repeating_Characters\"><\/span>9. Longest Substring Without Repeating Characters<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p><strong>This problem checks your sliding window technique.<\/strong><\/p>\n\n\n\n<p>def longest_unique_substring(s):<br>&nbsp;&nbsp;&nbsp; seen = {}<br>&nbsp;&nbsp;&nbsp; start = max_len = 0<br>&nbsp;&nbsp;&nbsp; for i, ch in enumerate(s):<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; if ch in seen and seen[ch] &gt;= start:<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; start = seen[ch] + 1<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; seen[ch] = i<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; max_len = max(max_len, i &#8211; start + 1)<br>&nbsp;&nbsp;&nbsp; return max_len<br><br>print(longest_unique_substring(&#8220;abcabcbb&#8221;))&nbsp; # Output: 3 <\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"10_Kth_Largest_Element_in_an_Array\"><\/span>10. Kth Largest Element in an Array<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p><strong>Heap-based question that comes up a lot.<\/strong><\/p>\n\n\n\n<p>import heapq<br><br>def kth_largest(nums, k):<br>&nbsp;&nbsp;&nbsp; return heapq.nlargest(k, nums)[-1]<br><br>print(kth_largest([3,2,1,5,6,4], 2))&nbsp; # Output: 5 <\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Data_Structure_Algorithm_Interview_Final_Thoughts\"><\/span>Data Structure Algorithm Interview Final Thoughts<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>When you practice these data structure algorithm interview questions, don\u2019t just think of them as exam prep. What really happens is that your brain starts training itself to look at problems differently. You\u2019ll get used to breaking things into smaller steps, and after a while, spotting patterns feels natural. Memorizing code won\u2019t help much\u2014understanding the \u201cwhy\u201d behind it will. That\u2019s the part interviewers actually notice. That\u2019s what really sticks. Once you understand that, you\u2019ll be able to tackle even the tricky variations interviewers like to throw in. <\/p>\n\n\n\n<p>If you keep practicing problems on arrays, linked lists, stacks, queues, trees, and .heaps, you\u2019ll slowly get more comfortable. Over time, that practice builds confidence, and you won\u2019t feel stuck when an interviewer puts a tough question in front of you. <\/p>\n\n\n\n<p>Explore how <a href=\"https:\/\/pickmyfuture.com\/hi\/artificial-intelligence-and-machine-learning\/\"><strong>Artificial Intelligence<\/strong> and <strong>Machine Learning<\/strong> <\/a>are transforming the tech world .<\/p>\n\n\n\n<figure class=\"wp-block-embed is-type-video is-provider-youtube wp-block-embed-youtube wp-embed-aspect-16-9 wp-has-aspect-ratio\"><div class=\"wp-block-embed__wrapper\">\n<iframe loading=\"lazy\" title=\"Top 5 Data Structures they asked me in 127 interviews\" width=\"640\" height=\"360\" src=\"https:\/\/www.youtube.com\/embed\/DDRo29ptFwE?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe>\n<\/div><\/figure>\n\n\n\n<p><br><br><\/p>","protected":false},"excerpt":{"rendered":"<p>\u091c\u092c \u0906\u092a \u0915\u094b\u0921\u093f\u0902\u0917 \u0907\u0902\u091f\u0930\u0935\u094d\u092f\u0942 \u0915\u0947 \u0932\u093f\u090f \u092c\u0948\u0920\u0924\u0947 \u0939\u0948\u0902, \u0924\u094b \u0907\u0902\u091f\u0930\u0935\u094d\u092f\u0942 \u0932\u0947\u0928\u0947 \u0935\u093e\u0932\u0947 \u0915\u094b \u0921\u0947\u091f\u093e \u0938\u094d\u091f\u094d\u0930\u0915\u094d\u091a\u0930 \u092f\u093e \u090f\u0932\u094d\u0917\u094b\u0930\u093f\u0926\u092e \u092a\u0930 \u0915\u094b\u0908 \u0938\u0935\u093e\u0932 \u092a\u0942\u091b\u0928\u0947 \u092e\u0947\u0902 \u091c\u094d\u092f\u093e\u0926\u093e \u0926\u0947\u0930 \u0928\u0939\u0940\u0902 \u0932\u0917\u0924\u0940\u0964 \u092f\u0947 \u0921\u0947\u091f\u093e \u0938\u094d\u091f\u094d\u0930\u0915\u094d\u091a\u0930 \u0914\u0930 \u090f\u0932\u094d\u0917\u094b\u0930\u093f\u0926\u092e \u0907\u0902\u091f\u0930\u0935\u094d\u092f\u0942 \u092a\u094d\u0930\u0936\u094d\u0928 \u0938\u093f\u0930\u094d\u092b \u0915\u0941\u091b \u0932\u093e\u0907\u0928\u094b\u0902 \u0915\u093e \u0915\u094b\u0921 \u0932\u093f\u0916\u0928\u0947 \u0915\u0947 \u092c\u093e\u0930\u0947 \u092e\u0947\u0902 \u0928\u0939\u0940\u0902 \u0939\u094b\u0924\u0947\u0964 \u0907\u0928\u094d\u0939\u0947\u0902 \u092f\u0939 \u0926\u0947\u0916\u0928\u0947 \u0915\u0947 \u0932\u093f\u090f \u0921\u093f\u091c\u093c\u093e\u0907\u0928 \u0915\u093f\u092f\u093e \u0917\u092f\u093e \u0939\u0948 \u0915\u093f \u0906\u092a \u092e\u0942\u0932 \u092c\u093e\u0924\u0947\u0902 \u0915\u093f\u0924\u0928\u0940 \u0905\u091a\u094d\u091b\u0940 \u0924\u0930\u0939 \u0938\u092e\u091d\u0924\u0947 \u0939\u0948\u0902, \u0906\u092a \u0938\u092e\u0938\u094d\u092f\u093e\u0913\u0902 \u0915\u094b \u0939\u0932 \u0915\u0930\u0928\u0947 \u0915\u0947 \u0932\u093f\u090f \u0915\u0948\u0938\u0947 \u0926\u0943\u0937\u094d\u091f\u093f\u0915\u094b\u0923 \u0905\u092a\u0928\u093e\u0924\u0947 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