126.7K
HELeetcode awesome trick
#leetcode #dsa #programming
@heydevanand
#Leetcode Coding Challenges For Java
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(12)
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AN🌟 Day 3 of my Daily LeetCode Journey!
🚀 1: Two Sum
Today's challenge dove into the world of arrays and dictionaries (hashmaps), focusing on efficient problem-solving (big-o notation).
Key Takeaways:
1. Traverse through the array, keeping track of each element's complement (target - current element).
2. Use a dictionary (hashmap) to store and quickly access the indices of the elements.
3. Check for the complement in the dictionary (hashmap) to find the two numbers that add up to the target.
This solution showcases the efficiency of hashmaps in reducing time complexity, a crucial skill in coding interviews. 🧠💡
Every problem solved is a step forward in our coding journey. Keep pushing those boundaries!
Follow for more insights and daily solutions on our LeetCode Journey! 💻✨
#TwoSum #ArrayHandling #PythonCoding #FAANG #Algorithms #Python #DSA #DataStructures #CodingInterview #CrackingTheCodingInterview #LeetCodeDaily #LeetCodeChallenge #SoftwareDevelopment #ProblemSolving #CodingJourney #LeetCodePython #DailyCoding
@andresdiaz.io
401.3K
OFComment “Runtym” to get sheet in your DM
All sheets are available on itsruntym.com website
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#coding #software #softwaredeveloper #job #fang #google #amazon #development #developer #career #learning #programming #leetcode #codingquestions #tcsinterview #microsoftinterview #softwareengineer #tcsjobs #tcs #hrinterview #motivation #interview #cs #viral #java #hr #dsa #tcsnqt #algorithm #itsruntym
@offthecollege_otc
50.0K
COComment "CODE" if you want the clear Brute Force and HashMap code with full explanation PDF. 🔥
Day 1 of 100 Days LeetCode DSA Challenge 🚀
Problem: Two Sum
Most beginners solve this using Brute Force, which takes O(n²) time because we check every pair.
But in this video, I explained how to optimize it using HashMap and reduce the time complexity to O(n). ⚡
This is how top programmers think — first brute force, then optimize.
If you are starting DSA, this is the most important problem to understand HashMap concept clearly.
Follow @Codewithkirann for daily DSA problems and explanations.
#day1 #100daysofcode #leetcode #dsa #python coding programming computerscience learntocode codewithkirann
@codewithkirann
325.2K
VOComment “LEETCODE” for the links.
You’ll Never Struggle With LeetCode Again 🧠
📌 Master DSA and problem-solving with these free resources:
1️⃣ 8 Patterns to Solve 80% of LeetCode Problems – Sahil & Sarra
2️⃣ Data Structures and Algorithm Patterns for LeetCode Interviews – freeCodeCamp
3️⃣ DSA Roadmap – roadmap.sh
Stop getting stuck on random problems and start solving smarter.
These resources teach you the core LeetCode patterns, how to break down problems logically, and prepare for FAANG-level interviews with structure — not chaos.
Whether you’re aiming for interview success, coding mastery, or just want to understand how top engineers think, this is your go-to LeetCode roadmap.
Save this post, share it, and start building real DSA confidence today. 💪
@volkan.js
39.1K
STHave you tried spicing things up in coding with games?✨ if you haven’t, try it now for FREE💕
Coddy have a wide range of lessons you can choose from to not only learn at beginner level but also code games just for fun! It has a wide selection of interactive lessons at every level on every topic💓 I’m enjoying their Java lessons recently and it’s sooo helpful😭💓
I love Coddy more than any other computer learning website mainly because it gamifies everything 📌💓
Share this with a friend who will like it and good luck🍀💓
🏷️:: #study #studygram #studytips #coding #codinglife #java #python #computer #computerprogramming #cs #games #ai
@studywith_raie
212.4K
EMComment “Leetcode” to get the links! 🧩🔥
Trying to crack coding interviews without mastering problem-solving patterns is like memorizing answers without understanding the logic. You might get lucky sometimes—but under pressure, everything falls apart. This mini roadmap fixes that.
🧠 My Brain After 569 Leetcode Problems
A brutally honest look at what grinding hundreds of problems actually teaches you — pattern recognition, mental stamina, and how your thinking evolves over time.
📚 8 Patterns to Solve 80% of Leetcode Problems
Instead of solving 500 random questions, learn the core patterns that show up again and again. This is how top candidates move fast and stay confident.
🎓 How I Would Learn Leetcode If I Could Start Over
A smarter roadmap that avoids common beginner traps, focuses on the right order, and helps you build real problem-solving skill — not just streaks.
💡 With these Leetcode resources you will:
🚀 Stop feeling lost when you see a new problem
🧠 Recognize patterns instead of reinventing solutions
🏗 Build strong data structures & algorithms intuition
⚙ Approach interviews with a repeatable solving strategy
💼 Level up for coding interviews at top tech companies
If you want to move from “I’ve done some problems” to “I can solve unseen questions under pressure,” structured Leetcode prep isn’t optional — it’s a game changer.
📌 Save this post so you always have a solid Leetcode roadmap.
💬 Comment “Leetcode” and I’ll send you all the links!
👉 Follow for more Interview Prep, System Design, and Engineering Growth content.
@emrcodes
11.1K
CODay 1/30 - LeetCode 217: Contains Duplicate 🎯
Most people check every pair (O(n²) - too slow!)
But here's the trick: HashMap makes it O(n) ⚡
Loop once, check if number exists, done! 🔥
Learning DSA one problem at a time 💪
Drop "DAY 1" if you're following along! 👇
#leetcode #dsa #coding #java #problemsolving datastructures
@codewithsathwik_
2.0M
CUJava developer❤️🤯
#coding #codingchallenge #java #javaprogramming #interviewskills #interviewtips
@curious_freakss
86.6K
SHI always thought coding was kinda boring—until I found this site that actually makes it fun. If you’ve ever wanted to learn but felt overwhelmed, this is a game-changer.
Yeah, tech can seem intimidating at first, but if you like a good challenge, you’ll never be bored. That first time you get your code to work? It’s a feeling you won’t forget.
#tech #coding #fyp #learning #programming #aesthetic
@shigcodes
35.7K
CODay 36 To start leetcode as a beginner, Here are some tips for you!! Check it out!!
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#100daysofcode #100daysofcodechallenge #100daysofchallenge #dsa #python #java #technology #techno #developer #softwaredeveloper #software #engineering #engineer #computer #learn #student #students #study #studygram #studymotivation #new #technology #viralreels #explore #explorepage #newreels
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@coderscove_
29.9K
CODid you know that Java behaves differently when comparing wrapper classes like Integer? 🤯
In this quiz, we test a simple line of code:
Integer a = 128;
Integer b = 128;
System.out.println(a == b);
Most beginners expect true, but the correct output is: ❌
👇 Watch the video to learn why Java outputs false here!
This happens because of Integer caching mechanism in Java — only values between -128 to 127 are cached. Anything outside that range creates a new object, so == compares references, not values. 🧠💡
---
🎯 You'll Learn:
✔ Java wrapper class behavior
✔ Integer caching
✔ Difference between == and .equals()
✔ Common Java interview question
---
💬 Comment below:
Did you get it right? 😎
---
🔍 Keywords:
Java quiz, Integer caching, Java interview question, wrapper classes, Java comparison, Java coding challenge, Java beginner tips, Java programming trick
---
📌 Hashtags:
#Java #JavaQuiz #CodingQuiz #ProgrammerLife #JavaInterview #JavaTips #CodingChallenge #LearnJava #DeveloperCommunity #ProgrammingFacts #JavaDeveloper #CodeSmart #SoftwareEngineer #TechLearning #programminghumor
@codewithprashantt
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