Proof that Leetcode WON'T make you a good developer

NeetCodeIO · Advanced ·⚡ Algorithms & Data Structures ·2y ago

Key Takeaways

The video discusses the limitations of LeetCode in making a good developer, with the creator of NeetCodeIO sharing their experience of debugging a complex issue in their code, highlighting the importance of systems design and problem-solving skills beyond just coding challenges.

Full Transcript

so it's actually quite simple what the problem was when I made the code change this morning at 80 hey everyone welcome back and let's write some awful code today what else should we add let me know if you have any suggestions for things we should add the one thing is like if I give a test case and for example I want to be able to display the diff of a test case that you may have failed cuz some of these can get pretty big these ones like for example this one your outp is here the expected output is different you want to see the difference though and it's not super clear by just looking at it so is there a way we can make this better yes there is we can add a button somewhere uh what's the end goal with this getting rid of like the need to redirect to elak code I guess but also just having the flexibility to add additional problems uh for example I'm adding like a bunch of machine learning ones pretty soon huh why do it show accepted it must be because these two are equal and what is that it shouldn't be equal so what's going on here this is accepted even though the answer is 100% wrong it shouldn't be marked like that test case output I guess I should just log it really what I should have done 5 minutes ago this thing annoys the hell out of me I need some handicap tools to help me read let me put my two brain cells together to figure out what's going on here so the data looks fine but something is a Miss why the hell is this one true and how the hell is the color red no no no no no no no this one is true right yeah it must be because it's red so this it must be red Yeah it's red so this one is executing how in the hell is that possible yet it's green for the third one makes sense they're equal wait a minute I think I know what it is this is a problem because I'm really dumb and thank God I have not pushed this to production yet you guys notice something if if I look at the submissions here they're all accepted that should not have been the case it's some code changes I made this morning when I was laying in bed you guys know what this means right this means I have to blame the backend Dev there's some code here it validates whether it passed or failed on the back end the front end is just for displaying The Styling and the colors and whatever right oh my God I really should have named these things better I don't know what I was thinking I literally just did this code today I think it's here actually here it is is it it's definitely this code let's just remove it just a test okay that was not the issue but wait the problem is that server side the thing is being marked as accepted when it really shouldn't that's really it somehow it's being marked accepted and I know pretty much where that happens as well it happens in checking if all submissions are correct we Loop through all of them so let's just check here console everybody's out there learning fun Tech and I'm sitting here working on angular I kind of want to check the judge response where is that once again see look how hard it is to read those logs dude so it looks correct to me how is it marked as accepted though I'm setting it to accepted probably here but it looks like it's already set to accepted let me see okay it's it's accepted before that okay I'm G to get really wait a minute I know it fellas it's when I'm submitting to judge zero this is the code I updated this is it and I'm so confident in my hypothesis I need my theme song on yes the 1H hour version should do so it's actually quite simple what the problem was when I made the code change this morning at 8:04 a.m. laying down in my bed in my underwear I made a code change here it doesn't let me copy and paste it what the hell why doesn't it okay there we go sorry now we have fix the bug the timing of the music is a little bit off I actually still don't know if this is it and if it is I don't know exactly how to fix it I mean I'll give it a go it's pass in some expected output let's pass in an empty array because YOLO wait a minute wait a minute what the [ __ ] no I am setting the test case output somebody like me with an IQ of 180 should be able to fix this on their first try okay so we didn't fix the problem I don't know guys I thought that was it wait it should be a string there's a lot of issues in this code I mean the more you look at this code the more brain cells you're going to lose I promise you that so if you guys are actually going to try to help me debug it you are very brave for doing that second Tres the charm holy okay we don't need the music anymore we save it for a rainy day it's just light work for an ex Google engineer like myself but you know I had to sell the story a little bit I had to make it look like I was struggling just to kind of get the narrative going do you know what I mean

Original Description

🚀 https://neetcode.io/ - A better way to prepare for Coding Interviews 🧑‍💼 LinkedIn: https://www.linkedin.com/in/navdeep-singh-3aaa14161/ 🐦 Twitter: https://twitter.com/neetcode1 ⭐ BLIND-75 PLAYLIST: https://www.youtube.com/watch?v=KLlXCFG5TnA&list=PLot-Xpze53ldVwtstag2TL4HQhAnC8ATf #neetcode #leetcode #python
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Playlist

Uploads from NeetCodeIO · NeetCodeIO · 0 of 60

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1 Leetcode 149 - Maximum Points on a Line - Python
Leetcode 149 - Maximum Points on a Line - Python
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 2 Design Linked List - Leetcode 707 - Python
Design Linked List - Leetcode 707 - Python
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Minimum Time to Collect All Apples in a Tree - Leetcode 1443 - Python
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Design Browser History - Leetcode 1472 - Python
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Number of Good Paths - Leetcode 2421 - Python
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Flip String to Monotone Increasing - Leetcode 926 - Python
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 7 Maximum Sum Circular Subarray - Leetcode 918 - Python
Maximum Sum Circular Subarray - Leetcode 918 - Python
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Find Closest Node to Given Two Nodes - Leetcode 2359 - Python
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Concatenated Words - Leetcode 472 - Python
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Data Stream as Disjoint Intervals - Leetcode 352 - Python
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LFU Cache - Leetcode 460 - Python
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N-th Tribonacci Number - Leetcode 1137
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Best Team with no Conflicts - Leetcode 1626 - Python
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Greatest Common Divisor of Strings - Leetcode 1071 - Python
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 15 Shortest Path in a Binary Matrix - Leetcode 1091 - Python
Shortest Path in a Binary Matrix - Leetcode 1091 - Python
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 16 Insert into a Binary Search Tree - Leetcode 701 - Python
Insert into a Binary Search Tree - Leetcode 701 - Python
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Delete Node in a BST - Leetcode 450 - Python
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Shuffle the Array (Constant Space) - Leetcode 1470 - Python
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Fruits into Basket - Leetcode 904 - Python
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 20 Number of Subarrays of size K and Average Greater than or Equal to Threshold - Leetcode 1343 Python
Number of Subarrays of size K and Average Greater than or Equal to Threshold - Leetcode 1343 Python
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Naming a Company - Leetcode 2306 - Python
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 22 As Far from Land as Possible - Leetcode 1162 - Python
As Far from Land as Possible - Leetcode 1162 - Python
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Shortest Path with Alternating Colors - Leetcode 1129 - Python
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Minimum Fuel Cost to Report to the Capital - Leetcode 2477 - Python
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Count Odd Numbers in an Interval Range - Leetcode 1523 - Python
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Contains Duplicate II - Leetcode 219 - Python
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 27 Path with Maximum Probability - Leetcode 1514 - Python
Path with Maximum Probability - Leetcode 1514 - Python
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 28 Add to Array-Form of Integer - Leetcode 989 - Python
Add to Array-Form of Integer - Leetcode 989 - Python
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 29 Unique Paths II - Leetcode 63 - Python
Unique Paths II - Leetcode 63 - Python
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 30 Minimum Distance between BST Nodes - Leetcode 783 - Python
Minimum Distance between BST Nodes - Leetcode 783 - Python
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 31 Design Hashmap - Leetcode 706 - Python
Design Hashmap - Leetcode 706 - Python
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 32 Range Sum Query Immutable - Leetcode 303 - Python
Range Sum Query Immutable - Leetcode 303 - Python
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 33 Binary Tree Zigzag Level Order Traversal - Leetcode 103 - Python
Binary Tree Zigzag Level Order Traversal - Leetcode 103 - Python
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 34 Middle of the Linked List - Leetcode 876 - Python
Middle of the Linked List - Leetcode 876 - Python
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 35 Course Schedule IV - Leetcode 1462 - Python
Course Schedule IV - Leetcode 1462 - Python
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 36 Single Element in a Sorted Array - Leetcode 540 - Python
Single Element in a Sorted Array - Leetcode 540 - Python
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 37 Capacity to Ship Packages - Leetcode 1011 - Python
Capacity to Ship Packages - Leetcode 1011 - Python
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 38 IPO - Leetcode 502 - Python
IPO - Leetcode 502 - Python
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 39 Minimize Deviation in Array - Leetcode 1675 - Python
Minimize Deviation in Array - Leetcode 1675 - Python
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 40 Longest Turbulent Array - Leetcode 978 - Python
Longest Turbulent Array - Leetcode 978 - Python
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 41 Last Stone Weight II - Leetcode 1049 - Python
Last Stone Weight II - Leetcode 1049 - Python
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 42 Construct Quad Tree - Leetcode 427 - Python
Construct Quad Tree - Leetcode 427 - Python
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 43 Find Duplicate Subtrees - Leetcode 652 - Python
Find Duplicate Subtrees - Leetcode 652 - Python
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 44 Sort an Array - Leetcode 912 - Python
Sort an Array - Leetcode 912 - Python
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 45 Ones and Zeroes - Leetcode 474 - Python
Ones and Zeroes - Leetcode 474 - Python
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 46 Remove Duplicates from Sorted Array II - Leetcode 80 - Python
Remove Duplicates from Sorted Array II - Leetcode 80 - Python
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 47 Maximum Twin Sum of a Linked List - Leetcode 2130 - Python
Maximum Twin Sum of a Linked List - Leetcode 2130 - Python
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 48 Concatenation of Array - Leetcode 1929 - Python
Concatenation of Array - Leetcode 1929 - Python
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 49 Symmetric Tree - Leetcode 101 - Python
Symmetric Tree - Leetcode 101 - Python
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 50 Check Completeness of a Binary Tree - Leetcode 958 - Python
Check Completeness of a Binary Tree - Leetcode 958 - Python
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 51 Construct Binary Tree from Inorder and Postorder Traversal - Leetcode 106 - Python
Construct Binary Tree from Inorder and Postorder Traversal - Leetcode 106 - Python
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 52 Find Peak Element - Leetcode 162 - Python
Find Peak Element - Leetcode 162 - Python
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 53 Accounts Merge - Leetcode 721 - Python
Accounts Merge - Leetcode 721 - Python
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 54 Binary Tree Preorder Traversal (Iterative) - Leetcode 144 - Python
Binary Tree Preorder Traversal (Iterative) - Leetcode 144 - Python
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 55 Binary Tree Postorder Traversal (Iterative) - Leetcode 145 - Python
Binary Tree Postorder Traversal (Iterative) - Leetcode 145 - Python
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 56 Number of Zero-Filled Subarrays - Leetcode 2348 - Python
Number of Zero-Filled Subarrays - Leetcode 2348 - Python
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Sqrt(x) - Leetcode 69 - Python
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Optimal Partition of String - Leetcode 2405 - Python
NeetCodeIO

The video highlights the importance of systems design and problem-solving skills in software development, beyond just coding challenges. The creator of NeetCodeIO shares their experience of debugging a complex issue in their code, demonstrating the need for a deeper understanding of system design and architecture.

Key Takeaways
  1. Identify the problem and its symptoms
  2. Use debugging tools to isolate the issue
  3. Apply problem-solving skills to fix the bug
  4. Test and verify the solution
  5. Refactor code to improve performance and readability
💡 Systems design and problem-solving skills are crucial for software development, and coding challenges like LeetCode are just one part of the equation.

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