22.5K
MAGot a MATLAB program? Turn it into a standalone interactive application.
These applications can also be shared with users who do not have MATLAB 🤝
@matlab
#Matlab Timeit
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NOImporting modules
Day 10
@no.more.tomorrow26
151
DALeetCode 3010. Divide an Array Into Subarrays With Minimum Cost I
LeetCode POTD explained clearly 💻
Problem → intuition → solution
⬆️ Full explanation on YouTube (link in bio)
@dailydoseofleetcode_yt
239
JOThis year 2026, I plan to actually finish leetcode 150. I’m not applying, I don’t need to practice right now. That is the best time to practice
@jordanthepolymath
690.4K
LIWhat does it print 🤔💭?
Tell me 👇
👨💻Follow @liam.codez to learn how to code
@liam.codez
2.6K
THSolved LeetCode Two Sum problem using hashmap approach + mastered Airflow branching with BranchPythonOperator + tackled SQL RANK() window function. For Two Sum, instead of brute-force nested loops (O(n2)
#LeetCode hashtag#TwoSum hashtag#HashMap hashtag#Airflow hashtag#Branching hashtag#BranchPythonOperator hashtag#SQL hashtag#WindowFunctions hashtag#RANK hashtag#DataEngineering hashtag#DSA hashtag#CodingInterview hashtag#WorkflowOrchestration hashtag#LearningInPublic hashtag#techskills
@the.intlovert
380
CODay 19 — Factorial 🚀
Multiply numbers from 1 to n 💻
Basic programming logic explained simply!
Follow for Day 20 🔥
#coding #logic #placements #programming #reels basics
@code_with_chinnu
162
FALc1 two sum using hashmaps
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🔍 Two Sum Problem — Pattern & Code Explanation
🚀 Problem Overview
Given an array of integers and a target value, return the indices of the two numbers that add up to the target.
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🧠 Pattern Used: Hash Map Lookup (One Pass)
💡 Core Idea
Instead of checking every pair, we:
1. Loop through the array once.
2. For each number, calculate the complement (target minus current number).
3. Check if that complement was seen earlier.
4. If yes, we found the pair.
5. If not, store the current number for future checks.
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⏱ Complexity
Time: O(n) single pass
Space: O(n) hash map storage
This is optimal. Anything slower means unnecessary work.
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🧩 Code Explanation
seen = {}
Dictionary storing visited numbers and their indices.
Loop through array
We scan each element once.
Compute complement
If current number is 7 and target is 10, we need 3.
Check if complement exists
If already seen, return the indices.
Store current number
Stored after checking to avoid using the same element twice.
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🔥 Why This Approach is Better
Brute force: O(n^2)
Hash map: O(n)
Nested loops waste time and scale poorly.
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🧠 Mental Model
For every number, ask:
Have I already seen the number that completes the target?
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🎯 Example
nums = [2, 7, 11, 15], target = 9
Steps
2 needs 7 → not seen → store
7 needs 2 → seen → return
Output: [1, 0]
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⚠️ Common Mistakes
Storing before checking leads to duplicates
Using list search causes quadratic slowdown
Forgetting dictionary lookup is constant time
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🏁 Final Thoughts
This problem teaches a foundational pattern used everywhere:
• Pair sums
• Subarray problems
• Frequency counting
• Sliding window optimizations
Master this pattern or struggle with half of DSA.
If this saved you hours of confusion, good. Now implement it without looking.
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#leetcode #lc #dsa #twosum #lc1
@faangcracker_
3.0K
SKIf you don’t understand THIS DP pattern… you’re memorizing, not learning.
LeetCode 221 – Maximal Square 🟦
Given a binary matrix, find the largest square containing only 1s.
👉 We take the minimum because a square can only grow if ALL three neighbors allow it.
Track the maximum side length. Final answer = side².
⏱ Time Complexity: O(m × n)
📦 Space Complexity: O(m × n)
(Optimizable to O(n))
⚡ This is a classic DP pattern used in many 2D problems.
Save this. You’ll see it again.
#leetcode #dsa #dynamicprogramming
#coding #programming
@skills2salary
1.9K
METuples are immutable but how does it work though ?? #programming #coding #python #viral #tech
@mergeconflicts.ig
26.2K
PIEvery program needs a way to store information, and that’s where variables come in 🧱💻. A variable is like a small box that holds data, and you can give it a name so the program can use it later 🏷️📦.
Data types define what kind of information that box can store—like numbers 🔢, text 🔤, true/false values ✔️❌, or decimals 🎯.
Choosing the right data type makes programs faster, safer, and easier to understand.
Follow @pi.mathematica for more interesting content on maths & where it shapes the world.
#programmingbasics #variables #datatypes #mathematics #systemdesign databasemanagement mysql mongodb postgresql mernstack codingtips techlearning maths dataiseverything learncode computerscience codingstudent techlearning
@pi.mathematica
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