Coding Interview Resources
This channel contains the free resources and solution of coding problems which are usually asked in the interviews. Managed by: @love_data
Show more📈 Analytical overview of Telegram channel Coding Interview Resources
Channel Coding Interview Resources (@crackingthecodinginterview) in the English language segment is an active participant. Currently, the community unites 51 982 subscribers, ranking 2 553 in the Technologies & Applications category and 6 635 in the India region.
📊 Audience metrics and dynamics
Since its creation on невідомо, the project has demonstrated rapid growth, gathering an audience of 51 982 subscribers.
According to the latest data from 03 November, 2026, the channel demonstrates stable activity. Although there has been a change in the number of participants by -222 over the last 30 days and by -4 over the last 24 hours, overall reach remains high.
- Verification status: Not verified
- Engagement rate (ER): The average audience engagement rate is 2.28%. Within the first 24 hours after publication, content typically collects 0.61% reactions from the total number of subscribers.
- Post reach: On average, each post receives 1 185 views. Within the first day, a publication typically gains 316 views.
- Reactions and interaction: The audience actively supports content: the average number of reactions per post is 1.
- Thematic interests: Content is focused on key topics such as array, stack, algorithm, programming, sort.
📝 Description and content policy
The author describes the resource as a platform for expressing subjective opinions:
“This channel contains the free resources and solution of coding problems which are usually asked in the interviews.
Managed by: @love_data”
Thanks to the high frequency of updates (latest data received on 04 November, 2026), the channel maintains relevance and a high level of publication reach. Analytics show that the audience actively interacts with content, making it an important point of influence in the Technologies & Applications category.
<header>, <footer>, <article>, and <section>. They improve accessibility, SEO, and code readability by providing meaningful structure to the content.
4. How do you create a hyperlink in HTML?
A hyperlink is created using the <a> (anchor) tag with the href attribute specifying the URL of the link. For example:
<a href="https://www.example.com">Visit Example</a>
5. What are HTML forms and how do you create one?
HTML forms are used to collect user input and are created using the <form> tag. Forms contain various input elements like text fields, radio buttons, checkboxes, and submit buttons. For example:
<form action="/submit" method="post">
<input type="text" name="username">
<input type="password" name="password">
<input type="submit" value="Submit">
</form>
6. Explain the difference between the <div> and <span> tags.
The <div> tag is a block-level element used to group larger sections of content, creating distinct blocks. The <span> tag is an inline element used to group small portions of text or other inline elements. <div> typically affects the layout by creating line breaks, while <span> does not.
7. What is the purpose of the <meta> tag in HTML?
The <meta> tag provides metadata about the HTML document, such as character encoding, viewport settings for responsive design, and SEO-related information like descriptions and keywords. Meta tags are placed within the <head> section of the HTML document.
8. How do you include an image in an HTML page?
An image is included using the <img> tag with the src attribute specifying the path to the image file and the alt attribute providing alternative text for accessibility. For example:
<img src="image.jpg" alt="Description of image">
9. What is the difference between inline, inline-block, and block elements in HTML?
- Inline elements (e.g., <span>, <a>) do not start on a new line and only take up as much width as necessary.
- Block elements (e.g., <div>, <p>) start on a new line and take up the full width available.
- Inline-block elements (e.g., <img>) are similar to inline elements but allow setting width and height, behaving like a combination of inline and block elements.
10. How do you embed a video in an HTML page?
A video is embedded using the <video> tag with the src attribute specifying the video file. You can include optional attributes like controls for playback controls and autoplay to start playing the video automatically. For example:
<video src="video.mp4" controls>
Your browser does not support the video tag.
</video>
Free Web Development Resources: https://t.me/webdevcoursefree
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ENJOY LEARNING! 👍👍CREATE VIEW view_name AS
SELECT column1, column2, ...
FROM table_name
WHERE condition;
9. How do you optimize SQL queries for better performance?
SQL query optimization can be achieved through several methods, including:
- Using proper indexing.
- Avoiding unnecessary columns in SELECT statements.
- Using joins instead of subqueries where appropriate.
- Analyzing and rewriting complex queries for efficiency.
- Ensuring statistics are up-to-date.
10. What is a stored procedure and how do you create one in SQL?
A stored procedure is a set of SQL statements that can be executed as a single unit. It is used to encapsulate repetitive tasks, improve performance, and enhance security. A stored procedure is created using the CREATE PROCEDURE statement:
CREATE PROCEDURE procedure_name
AS
BEGIN
-- SQL statements
END;
Here you can find SQL Resources
👇👇
https://t.me/sqlanalyst
Credits: https://t.me/crackingthecodinginterview
ENJOY LEARNING 👍👍var is function-scoped and can be redeclared and updated.
- let is block-scoped and can be updated but not redeclared within the same scope.
- const is block-scoped and cannot be updated or redeclared, but the properties of objects declared with const can be modified.
4. What is a closure in JavaScript?
A closure is a function that retains access to its lexical scope, even when the function is executed outside that scope. This allows the function to access variables from its defining scope even after that scope has finished executing.
5. How do you handle asynchronous operations in JavaScript?
Asynchronous operations in JavaScript can be handled using callbacks, Promises, or async/await. Callbacks are functions passed as arguments to other functions, Promises represent eventual completion or failure of an asynchronous operation, and async/await allows writing asynchronous code that looks synchronous.
6. What is the Document Object Model (DOM) and how do you manipulate it using JavaScript?
The DOM is a programming interface for HTML and XML documents, representing the structure of a document as a tree of objects. JavaScript can manipulate the DOM using methods like getElementById(), querySelector(), createElement(), and properties like innerHTML and style.
7. Explain the difference between == and === in JavaScript.
The == operator performs type coercion, meaning it converts the operands to the same type before comparing them. The === operator, on the other hand, does not perform type coercion and compares both value and type directly.
8. What is the event loop in JavaScript?
The event loop is a mechanism that allows JavaScript to perform non-blocking, asynchronous operations. It continuously checks the call stack and the message queue. If the call stack is empty, it takes the first event from the message queue and pushes it to the call stack, allowing asynchronous callbacks to be executed.
9. How do you create and use a JavaScript module?
JavaScript modules can be created using the export keyword to export functions, objects, or primitives from a file, and the import keyword to import them into another file. This promotes modular code and reuse of functionality across different parts of an application.
10. How do you handle errors in JavaScript?
Errors in JavaScript can be handled using try-catch blocks. The code that may throw an error is placed in the try block, and any exceptions are caught and handled in the catch block. Additionally, a finally block can be used to execute code regardless of whether an exception occurs.
You can check these resources for Coding interview Preparation
Credits: https://t.me/free4unow_backup
All the best 👍👍Pattern 3: Fast and Slow pointers
The Fast and Slow pointer approach, also known as the Hare & Tortoise algorithm, is a pointer algorithm that uses two pointers which move through the array (or sequence/linked list) at different speeds. This approach is quite useful when dealing with cyclic linked lists or arrays.
By moving at different speeds (say, in a cyclic linked list), the algorithm proves that the two pointers are bound to meet. The fast pointer should catch the slow pointer once both the pointers are in a cyclic loop.
How To Identify
- The problem will deal with a loop in a linked list or array
- When you need to know the position of a certain element or the overall length of the linked list
Questions
- Linked List Cycle (easy)
- Palindrome Linked List (medium)
- Cycle in a Circular Array (hard)
Best DSA RESOURCES: https://topmate.io/coding/886874
ENJOY LEARNING 👍👍Pattern 2: Two Pointers Pattern
Two Pointers is a pattern where two pointers iterate through the data structure in tandem until one or both of the pointers hit a certain condition. Two Pointers is often useful when searching pairs in a sorted array or linked list; for example, when you have to compare each element of an array to its other elements.
How To Identify
- It will feature problems where you deal with sorted arrays (or Linked Lists) and need to find a set of elements that fulfill certain constraints
- The set of elements in the array is a pair, a triplet, or even a subarray
Questions
- Squaring a sorted array (easy)
- Triplets that sum to zero (medium)
- Comparing strings that contain backspaces (medium)
You can check these resources for Coding interview Preparation
All the best 👍👍Pattern 1: Sliding Window Pattern
The Sliding Window pattern is used to perform a required operation on a specific window size of a given array or linked list, such as finding the longest subarray containing all 1s. Sliding Windows start from the 1st element and keep shifting right by one element and adjust the length of the window according to the problem that you are solving. In some cases, the window size remains constant and in other cases the sizes grows or shrinks.
How To Identify
- The problem input is a linear data structure such as a linked list, array, or string
- You’re asked to find the longest/shortest substring, subarray, or a desired value
Questions
- Maximum sum subarray of size ‘K’ (easy)
- Longest substring with ‘K’ distinct characters (medium)
- String anagrams (hard)
Best DSA RESOURCES: https://topmate.io/coding/886874
ENJOY LEARNING 👍👍