#dsa40 - Twitter Hashtag

over 1 year ago

🚨 Announcement: The challenge just got BIGGER & BETTER — We’re officially going from #DSA40 ➜ #DSA50 🔥 Why? ✅ I’m having fun ✅ Still so much to explore ✅ Important topics like Greedy, DP, and Trie are coming up!

KhanKamranAlwi's tweet photo. 🚨 Announcement:
The challenge just got BIGGER & BETTER —
We’re officially going from #DSA40 ➜ #DSA50 🔥
Why?
✅ I’m having fun
✅ Still so much to explore
✅ Important topics like Greedy, DP, and Trie are coming up! https://t.co/KWDRk7ZiTC

0

2

0

49

Kamran Khan Alwi @KhanKamranAlwi

over 1 year ago

🧵 DAY 28/40 – #DSA40 🧠 Topic: Stack Evaluation & Parsing Today’s Leetcode grind: 🔹 #150 – Evaluate Reverse Polish Notation 🔹 #227 – Basic Calculator II Let’s break it down 👇 #Leetcode #DSAChallenge #Stack #Python #40DaysOfCode

KhanKamranAlwi's tweet photo. 🧵 DAY 28/40 – #DSA40
🧠 Topic: Stack Evaluation & Parsing
Today’s Leetcode grind:
🔹 #150 – Evaluate Reverse Polish Notation
🔹 #227 – Basic Calculator II

Let’s break it down 👇
#Leetcode #DSAChallenge #Stack #Python #40DaysOfCode https://t.co/t0m4y14wJT

1

2

0

29

Kamran Khan Alwi @KhanKamranAlwi

over 1 year ago

🧵 DAY 26/40 – #DSA40 🧠 Topic: Stack-based Thinking (Monotonic Stack + Map) Today’s Leetcode grind: 🔹 #739 – Daily Temperatures 🔹 #496 – Next Greater Element I Let’s break it down 👇 #Stack #Leetcode #40DaysOfCode #DSAChallenge

KhanKamranAlwi's tweet photo. 🧵 DAY 26/40 – #DSA40
🧠 Topic: Stack-based Thinking (Monotonic Stack + Map)
Today’s Leetcode grind:
🔹 #739 – Daily Temperatures
🔹 #496 – Next Greater Element I

Let’s break it down 👇
#Stack #Leetcode #40DaysOfCode #DSAChallenge https://t.co/YTwSA1JV0F

1

2

0

19

Kamran Khan Alwi @KhanKamranAlwi

over 1 year ago

🧵 DAY 23/40 – #DSA40 🧠 Topic: Backtracking + Handling Duplicates Today’s Leetcode grind: 🔹 #78 – Subsets 🔹 #90 – Subsets II Let’s dive in 👇 #Backtracking #Recursion #Leetcode #DSA #40DaysOfCode

KhanKamranAlwi's tweet photo. 🧵 DAY 23/40 – #DSA40
🧠 Topic: Backtracking + Handling Duplicates
Today’s Leetcode grind:
🔹 #78 – Subsets
🔹 #90 – Subsets II

Let’s dive in 👇
#Backtracking #Recursion #Leetcode #DSA #40DaysOfCode https://t.co/AQAt3MsFqS

1

5

0

40

Kamran Khan Alwi @KhanKamranAlwi

over 1 year ago

📅 Day 22/40 of #DSA40 Topic: Binary Recursion Problems: 🔹 Leetcode #50 – Pow(x, n) 🔹 Leetcode #70 – Climbing Stairs #40DaysOfCode #Python #Leetcode #Recursion #DSA

KhanKamranAlwi's tweet photo. 📅 Day 22/40 of #DSA40
Topic: Binary Recursion
Problems:
🔹 Leetcode #50 – Pow(x, n)
🔹 Leetcode #70 – Climbing Stairs
#40DaysOfCode #Python #Leetcode #Recursion #DSA https://t.co/VDDzA2b9z5

1

2

0

23

Kamran Khan Alwi @KhanKamranAlwi

over 1 year ago

🔥 DAY 21/40 – #DSA40 🧠 Topic: Recursion Kickoff – Base & Overlapping Subproblems Today’s problems: 🔹 Leetcode #509 – Fibonacci Number 🔹 Factorial using recursion (custom) Let’s unpack them 👇 #Recursion #Leetcode #40DaysOfCode #DSAChallenge

KhanKamranAlwi's tweet photo. 🔥 DAY 21/40 – #DSA40

🧠 Topic: Recursion Kickoff – Base & Overlapping Subproblems
Today’s problems:
🔹 Leetcode #509 – Fibonacci Number
🔹 Factorial using recursion (custom)

Let’s unpack them 👇
#Recursion #Leetcode #40DaysOfCode #DSAChallenge https://t.co/HE9gWppHDF

2

22

0

176

Kamran Khan Alwi @KhanKamranAlwi

over 1 year ago

🧵 DAY 20/40 – #DSA40 🧠 Topic: Linked List – Reordering & Dividing Today’s grind: 🔹 Leetcode #143 – Reorder List 🔹 Leetcode #725 – Split Linked List in Parts Let’s break it down 👇 #40DaysOfCode #Leetcode #DSA #Python

KhanKamranAlwi's tweet photo. 🧵 DAY 20/40 – #DSA40
🧠 Topic: Linked List – Reordering & Dividing
Today’s grind:
🔹 Leetcode #143 – Reorder List
🔹 Leetcode #725 – Split Linked List in Parts
Let’s break it down 👇
#40DaysOfCode #Leetcode #DSA #Python https://t.co/bfxaQAQ6ft

1

3

0

30

Kamran Khan Alwi @KhanKamranAlwi

over 1 year ago

🧵 DAY 19/40 – #DSA40 🧠 Topic: Linked List – Cycles & Rotation Today’s grind: 🔹 Leetcode #142 – Linked List Cycle II 🔹 Leetcode #61 – Rotate List Let’s unpack the tricks & patterns 👇 #40DaysOfCode #Leetcode #DSA #Python

KhanKamranAlwi's tweet photo. 🧵 DAY 19/40 – #DSA40
🧠 Topic: Linked List – Cycles & Rotation
Today’s grind:
🔹 Leetcode #142 – Linked List Cycle II
🔹 Leetcode #61 – Rotate List
Let’s unpack the tricks & patterns 👇
#40DaysOfCode #Leetcode #DSA #Python https://t.co/h77OYH6zUU

1

3

0

19

Kamran Khan Alwi @KhanKamranAlwi

over 1 year ago

🧵 DAY 18/40 – #DSA40 🧠 Topic: Cycle Detection (Floyd’s Algorithm) Today’s Leetcode grind: 🔹 #141 – Linked List Cycle 🔹 #287 – Find the Duplicate Number Let’s break it down 👇 #LinkedList #FloydsAlgorithm #Leetcode #DSA #Python

KhanKamranAlwi's tweet photo. 🧵 DAY 18/40 – #DSA40
🧠 Topic: Cycle Detection (Floyd’s Algorithm)
Today’s Leetcode grind:
🔹 #141 – Linked List Cycle
🔹 #287 – Find the Duplicate Number

Let’s break it down 👇
#LinkedList #FloydsAlgorithm #Leetcode #DSA #Python https://t.co/gh4FSnCF1P

1

2

0

27

Kamran Khan Alwi @KhanKamranAlwi

over 1 year ago

🧵 DAY 17/40 – #DSA40 🧠 Topic: Linked List – Two Pointers + Hashing Today’s missions: 🔹 Leetcode #19 – Remove Nth Node From End 🔹 Leetcode #160 – Intersection of Two Linked Lists Let’s walk through the core logic👇 #Leetcode #LinkedList #DSAChallenge #40DaysOfCode

KhanKamranAlwi's tweet photo. 🧵 DAY 17/40 – #DSA40
🧠 Topic: Linked List – Two Pointers + Hashing
Today’s missions:
🔹 Leetcode #19 – Remove Nth Node From End
🔹 Leetcode #160 – Intersection of Two Linked Lists
Let’s walk through the core logic👇
#Leetcode #LinkedList #DSAChallenge #40DaysOfCode https://t.co/PEpsBqbBbj

1

2

0

20

Kamran Khan Alwi @KhanKamranAlwi

over 1 year ago

🧵 DAY 13/40 – #DSA40 🧠 Topic: Binary Search on Answer Today’s grind was all about searching the answer, not the index 💡 🔹 Leetcode #69 – Sqrt(x) 🔹 Leetcode #875 – Koko Eating Bananas Let’s break it down 👇 #BinarySearch #Leetcode #CodingPatterns #DSA #LearnInPublic

KhanKamranAlwi's tweet photo. 🧵 DAY 13/40 – #DSA40

🧠 Topic: Binary Search on Answer
Today’s grind was all about searching the answer, not the index 💡
🔹 Leetcode #69 – Sqrt(x)
🔹 Leetcode #875 – Koko Eating Bananas

Let’s break it down 👇
#BinarySearch #Leetcode #CodingPatterns #DSA #LearnInPublic https://t.co/ebERFg4roR

1

2

0

85

Kamran Khan Alwi @KhanKamranAlwi

over 1 year ago

🧵 DAY 12/40 – #DSA40 🧠 Topic: Binary Search Variants Solved today: 🔹 Leetcode #33 – Search in Rotated Sorted Array 🔹 Leetcode #34 – Find First and Last Position of Element Logic breakdown 👇 #Leetcode #Python #BinarySearch #DSA

KhanKamranAlwi's tweet photo. 🧵 DAY 12/40 – #DSA40
🧠 Topic: Binary Search Variants
Solved today:
🔹 Leetcode #33 – Search in Rotated Sorted Array
🔹 Leetcode #34 – Find First and Last Position of Element
Logic breakdown 👇
#Leetcode #Python #BinarySearch #DSA https://t.co/xnOBcoMduM

1

4

0

1

134

Kamran Khan Alwi @KhanKamranAlwi

over 1 year ago

🧵 DAY 11/40 – #DSA40 🧠 Topic: Binary Search – Classic & Insertions Today’s grind: 🔹 Leetcode #704 – Binary Search 🔹 Leetcode #35 – Search Insert Position Let’s break down the core logic and tricks 👇 #BinarySearch #Python #LearnInPublic

KhanKamranAlwi's tweet photo. 🧵 DAY 11/40 – #DSA40

🧠 Topic: Binary Search – Classic & Insertions
Today’s grind:
🔹 Leetcode #704 – Binary Search
🔹 Leetcode #35 – Search Insert Position

Let’s break down the core logic and tricks 👇
#BinarySearch #Python #LearnInPublic https://t.co/rr7y0NjgEK

1

3

0

93

Kamran Khan Alwi @KhanKamranAlwi

over 1 year ago

🧵 DAY 10/40 – #DSA40 🧠 Topic: String Parsing & Pattern Search Solved today: 🔹 Leetcode #8 – String to Integer (atoi) 🔹 Leetcode #28 – Find Index of First Occurrence in String #Python #40DaysOfCode #LeetCode 👇 Let’s break down the logic!

KhanKamranAlwi's tweet photo. 🧵 DAY 10/40 – #DSA40
🧠 Topic: String Parsing & Pattern Search
Solved today:
🔹 Leetcode #8 – String to Integer (atoi)
🔹 Leetcode #28 – Find Index of First Occurrence in String
#Python #40DaysOfCode #LeetCode

👇 Let’s break down the logic! https://t.co/AhO4eUPNrm

1

9

0

68

Kamran Khan Alwi @KhanKamranAlwi

over 1 year ago

🧵 DAY 9/40 – #DSA40 💫 Topic: Palindromes via Expansion Solved today: 🔹 Leetcode #5 – Longest Palindromic Substring 🔹 Leetcode #647 – Palindromic Substrings Let’s explore how expanding around centers unlocks both problems 👇 #Python #Leetcode #DSA

KhanKamranAlwi's tweet photo. 🧵 DAY 9/40 – #DSA40
💫 Topic: Palindromes via Expansion
Solved today:
🔹 Leetcode #5 – Longest Palindromic Substring
🔹 Leetcode #647 – Palindromic Substrings
Let’s explore how expanding around centers unlocks both problems 👇
#Python #Leetcode #DSA https://t.co/fdd3rd4cAY

1

4

0

39

Kamran Khan Alwi @KhanKamranAlwi

over 1 year ago

🧵 DAY 8/40 – #DSA40 🧠 Topic: Sliding Window 🔁 Solved today: 🔹 Leetcode #3 – Longest Substring Without Repeating Characters 🔹 Leetcode #209 – Minimum Size Subarray Sum Here’s what I learned (with logic & patterns): #Python #Leetcode #SlidingWindow

KhanKamranAlwi's tweet photo. 🧵 DAY 8/40 – #DSA40
🧠 Topic: Sliding Window 🔁
Solved today:
🔹 Leetcode #3 – Longest Substring Without Repeating Characters
🔹 Leetcode #209 – Minimum Size Subarray Sum
Here’s what I learned (with logic & patterns):
#Python #Leetcode #SlidingWindow https://t.co/EayJV6zrb1

1

2

0

26

Kamran Khan Alwi @KhanKamranAlwi

over 1 year ago

🧵 DAY 6/40 – #DSA40 🔤 Topic: Character Count with HashMaps Solved today: 🔹 Leetcode #242 – Valid Anagram 🔹 Leetcode #383 – Ransom Note Let’s break down the core ideas 👇 #Python #Leetcode #HashMap #DSA

KhanKamranAlwi's tweet photo. 🧵 DAY 6/40 – #DSA40
🔤 Topic: Character Count with HashMaps
Solved today:
🔹 Leetcode #242 – Valid Anagram
🔹 Leetcode #383 – Ransom Note

Let’s break down the core ideas 👇
#Python #Leetcode #HashMap #DSA https://t.co/lZihtiRtYx

1

5

0

46

Kamran Khan Alwi @KhanKamranAlwi

over 1 year ago

🧵 DAY 5/40 – #DSA40 📈 Topic: Stock Market Strategy Solved today: 🔹 Leetcode #121 – Best Time to Buy and Sell Stock 🔹 Leetcode #122 – Best Time to Buy and Sell Stock II Let’s break down the core approaches 👇 #Python #Leetcode #Greedy #Kadane

KhanKamranAlwi's tweet photo. 🧵 DAY 5/40 – #DSA40
📈 Topic: Stock Market Strategy
Solved today:
🔹 Leetcode #121 – Best Time to Buy and Sell Stock
🔹 Leetcode #122 – Best Time to Buy and Sell Stock II

Let’s break down the core approaches 👇
#Python #Leetcode #Greedy #Kadane https://t.co/0zh3ZRLaJO

1

3

0

46

Kamran Khan Alwi @KhanKamranAlwi

over 1 year ago

🧵 DAY 4/40 – #DSA40 👨🏼‍💻 Array Merging + Element Filtering Solved today: 🔹 Leetcode #88 – Merge Sorted Array 🔹 Leetcode #350 – Intersection of Two Arrays II 🔹 Bonus: Leetcode #26 – Remove Duplicates from Sorted Array Let’s break down the core logic 👇 #Python #Leetcode

KhanKamranAlwi's tweet photo. 🧵 DAY 4/40 – #DSA40
👨🏼‍💻 Array Merging + Element Filtering
Solved today:
🔹 Leetcode #88 – Merge Sorted Array
🔹 Leetcode #350 – Intersection of Two Arrays II
🔹 Bonus: Leetcode #26 – Remove Duplicates from Sorted Array
Let’s break down the core logic 👇
#Python #Leetcode https://t.co/uxO3ebiKJQ

1

4

0

40

Kamran Khan Alwi @KhanKamranAlwi

over 1 year ago

🧵 DAY 3/40 – #DSA40 🔍 Palindrome Logic + Reversal in Chunks (Python) Today I tackled: 🔹 Leetcode #125 – Valid Palindrome 🔹 Leetcode #680 – Valid Palindrome II 🔹 Leetcode #541 – Reverse String II (bonus!) Let’s break them down 👇

KhanKamranAlwi's tweet photo. 🧵 DAY 3/40 – #DSA40
🔍 Palindrome Logic + Reversal in Chunks (Python)
Today I tackled:
🔹 Leetcode #125 – Valid Palindrome
🔹 Leetcode #680 – Valid Palindrome II
🔹 Leetcode #541 – Reverse String II (bonus!)
Let’s break them down 👇 https://t.co/oEqRHIZZ9u

1

3

0

36

Top Tweets for #dsa40

Last Seen Hashtags on Sotwe

Trends for you

Most Popular Users