Master JavaScript Interviews: Top 20 Coding Questions Explained in Tamil

In this video, we tackle 20 essential JavaScript coding challenges designed to sharpen your skills and prepare you for technical interviews. From reversing a string without built-in methods to implementing debouncing and throttling, each problem is explained with clear, step-by-step solutions. You'll learn to handle tasks like checking for palindromes, finding missing numbers, flattening nested arrays, and more. Perfect for developers looking to master JavaScript or prepare for coding interviews.

Timestamps:
00:00 Intro
02:37 Setup Development Environment
05:14 Reverse a string without using built-in methods.
09:46 Check if a string is a palindrome.
15:00 Count the occurrences of each character in a string.
21:10 Find the longest word in a string.
27:24 Remove duplicates from an array.
37:54 Check if a string contains balanced parentheses.
46:03 Find the first non-repeating character in a string.
50:42 Write a function to check if two strings are anagrams.
01:01:46 Find the missing number in an array of size `n-1` containing numbers from 1 to `n`.
01:12:05 Flatten a nested array.
01:16:49 Convert a Roman numeral to an integer.
01:24:48 Convert an integer to a Roman numeral.
01:31:36 Find the longest common prefix of an array of strings.
01:39:21 Write a function to find the intersection of two arrays.
01:43:28 Rotate an array by `k` steps.
01:56:31 Implement a debounce function.
02:02:39 Implement a throttle function.
02:09:01 Implement a deep clone of an object.
02:22:50 Write a function to perform binary addition of two strings.
02:38:39 Implement a function to check if a string can be rearranged to form a palindrome.

🤝 **Donate & Help this Channel:**

🌐 **Join Udemy Courses**

📧 **Contact Information:**

🔔 For business inquiries or collaborations, please use the provided contact information. Thank you for your support! Don't forget to like, share, and subscribe for more content! 🔔

[balakrishnana.k]

I would request you to add time complexity for each method you try..

People will always choose the easiest way but end up with high time complexity.

In 8th example, using formula - we achieved O(1) but if we use Set with has function it will take O(n).

It would be good if you add this while solving the problems with different approaches.

Simple request from a developer, thanks for understanding.

[KesavanMurugesan-ku]

Hi Bro, Same idhae maaari advanced level coding questions podunga. Main ah more than 3 years experienced persons. Oru series maari potingana nusefulah irukum brother

[naveen.a]

Bro please continue to javascript DSA...Waiting

[DevRaj]

En thalaivan vantan daaaa💥💥💥💥💥💥💥💥💥💥💥💥🔥🔥🔥🔥🔥🔥

[narayanan]

Good and most waited content bro

👌🏼

[balakrishnana.k]

7th question : Finding the first non repeating character

You have solved it using O(n*m) complexity and space complexity O(n)

Why don't we try IndexOf() method using a single loop.

For example

i th index string - take it (s.substring(i+1) .IndexOf(s[i])) == -1 )
return s[i] - since it is not repated anywhere in substring.

[Vishnu-Harini]

Hi JVL,
I have donated in gpay,
Can I get an acknowledgement?
And this series needs to continued.
I saw the Full video..
Only on the deep clone still clarification is needed which I can do on my own.
But pls continue doing this js related videos.

[chitrarasanthangarasu]

37:54 Check if a string contains balanced parentheses.
intha logic thappa irukku bro.. for example If i given the input like this "))()()" what is the output here? basically it should be given false only right?

[senthilkumaran]

Springboot full course podunga bro pls

[BalaMurugan-fgqi]

Bro nodejs micro service video venum bro and oru project bro

[Akash-dglv]

Spring boot full course and project please anna

[venkydevops]

bro where to get this type of question ?

[rockyvelu]

Bro yenaku oru doubt bro athu naa insta solirukan konjam yenaku clear Pani vidunga bro🙏

[SanthoshSanthosh-cxyn]

Bro react interview question podunga bro

[rajkumar-wtun]

Report lab in django for pdf pathi video podunga bro..

[manismania]

Anna please python problem solving ku video podunga na coding

[RalKrish]

for angrams question 7 at 50:42 Write a function to check if two strings are anagrams.why this fn is less efficient any thoughts bro?

function areAnagrams(str1, str2) {
// Remove spaces and convert to lowercase
let cleanedStr1 = str1.replace(/\s+/g, '').toLowerCase();
let cleanedStr2 = str2.replace(/\s+/g, '').toLowerCase();

// Sort the letters of both strings
let sortedStr1 =
let sortedStr2 =

// Compare the sorted strings
return sortedStr1 === sortedStr2;
}

// Test cases
console.log(areAnagrams("listen", "silent")); // true
console.log(areAnagrams("race", "care")); // true
console.log(areAnagrams("hello", "world")); // false