Rehan Sayyed
@TheSimpleCoder_
Software Engineering Aspirant | C++ & DSA Learner | Tech-Driven Mind with a Love for OS & DBMS
- Learned 3-tier architecture in DBMS 📚 - Built a student marks system 🎓 - Got a clearer view of how layers connect 🔗 - Hands-on practice made it click 💡 - Check the guide here 👉 [rb.gy/e5j1of]
![TheSimpleCoder_'s tweet image. - Learned 3-tier architecture in DBMS 📚
- Built a student marks system 🎓
- Got a clearer view of how layers connect 🔗
- Hands-on practice made it click 💡
- Check the guide here 👉 [rb.gy/e5j1of]](https://pbs.twimg.com/media/GzSlTwcXAAAFeI0.jpg)
LeetCode 73. Set Matrix Zeroes 0️⃣ - I solved this using two approaches > Approach 1: Using O(m + n) space ☄️ > Approach 2: Using O(1) space 🌞 You can checkout my solution to learn more about this: [shorturl.at/i8nZa] 💡 - Let's learn and grow 🪴!
![TheSimpleCoder_'s tweet image. LeetCode 73. Set Matrix Zeroes 0️⃣
- I solved this using two approaches
> Approach 1: Using O(m + n) space ☄️
> Approach 2: Using O(1) space 🌞
You can checkout my solution to learn more about this: [shorturl.at/i8nZa] 💡
- Let's learn and grow 🪴!](https://pbs.twimg.com/media/GyetDlmWwAAaA-1.jpg)
Been at LeetCode 48: Rotate Image since this morning! Finally figured out why the transpose + reverse trick works. 🤔🔄 Curious about Why does it works? Check out my deep dive: [rentry.co/lc48] Let’s solve smarter! 💡💻
![TheSimpleCoder_'s tweet image. Been at LeetCode 48: Rotate Image since this morning!
Finally figured out why the transpose + reverse trick works. 🤔🔄
Curious about Why does it works?
Check out my deep dive: [rentry.co/lc48]
Let’s solve smarter! 💡💻](https://pbs.twimg.com/media/GxmEURDWsAEyob7.png)
Today I solved LeetCode 54: Spiral Matrix! 😵💫 I tried two different ways to solve it and shared my solutions here: (rentry.co/lc54) 👈 If you want to learn together or have other ideas, feel free to share! Let’s keep growing and helping each other! 💡
🖥️ Today I learned about the system() call in OS! It lets you run shell commands from your C/C++ code. Super handy for scripting! I broke it down with code & output 👇 #Windows #Linux #Programming #CPP #OS #Coding
🥇I solved LeetCode 41, First Missing Positive I solved this with two approaches: Approach 1️⃣: O(n) space Approach 2️⃣: O(1) space 📛My solution: [rentry.co/lc41] <- Refer it, and if it's helpful for you, please like the post Let's learn and grow together🪴
![TheSimpleCoder_'s tweet image. 🥇I solved LeetCode 41, First Missing Positive
I solved this with two approaches:
Approach 1️⃣: O(n) space
Approach 2️⃣: O(1) space
📛My solution: [rentry.co/lc41] &lt;- Refer it, and if it's helpful for you, please like the post
Let's learn and grow together🪴](https://pbs.twimg.com/media/GweGbbdbcAAmcbn.jpg)
![TheSimpleCoder_'s tweet image. 🥇I solved LeetCode 41, First Missing Positive
I solved this with two approaches:
Approach 1️⃣: O(n) space
Approach 2️⃣: O(1) space
📛My solution: [rentry.co/lc41] &lt;- Refer it, and if it's helpful for you, please like the post
Let's learn and grow together🪴](https://pbs.twimg.com/media/GweHDkGbMAAi23N.png)
🚀 Solved LeetCode 334: Increasing Triplet Subsequence! My Full code & explanation: [rentry.co/lc334] #LeetCode #DSA #Coding #Programming #ProblemSolving #AlgorithmDesign #InterviewPrep #TechSkills
![TheSimpleCoder_'s tweet image. 🚀 Solved LeetCode 334: Increasing Triplet Subsequence!
My Full code &amp; explanation: [rentry.co/lc334]
#LeetCode #DSA #Coding #Programming #ProblemSolving #AlgorithmDesign #InterviewPrep #TechSkills](https://pbs.twimg.com/media/GwM3buMW4AAAT-R.jpg)
🚀 Solved LeetCode 2348: Number of Zero-Filled Subarrays! Brute force checks every subarray - slow. 🐢 Optimized: one pass, count consecutive zeros, add to total. ⚡ Full code & explanation: [rentry.co/lc2348] #LeetCode #DSA #Coding #Programming #ProblemSolving
![TheSimpleCoder_'s tweet image. 🚀 Solved LeetCode 2348: Number of Zero-Filled Subarrays!
Brute force checks every subarray - slow. 🐢
Optimized: one pass, count consecutive zeros, add to total. ⚡
Full code &amp; explanation: [rentry.co/lc2348]
#LeetCode #DSA #Coding #Programming #ProblemSolving](https://pbs.twimg.com/media/GwE2IyGW8AAO1aU.png)
![TheSimpleCoder_'s tweet image. 🚀 Solved LeetCode 2348: Number of Zero-Filled Subarrays!
Brute force checks every subarray - slow. 🐢
Optimized: one pass, count consecutive zeros, add to total. ⚡
Full code &amp; explanation: [rentry.co/lc2348]
#LeetCode #DSA #Coding #Programming #ProblemSolving](https://pbs.twimg.com/media/GwE2KovXMAE6OUe.jpg)
SOLVED "122. Best Time to Buy and Sell Stock II" Today! 📈 The key factor here is the greedy approach: summing all positive price differences for maximum profit. My solution: [rentry.co/lc122] 💡 Let's learn and grow together! 🌱 #DSA #LeetCode #SoftwareEngineering
![TheSimpleCoder_'s tweet image. SOLVED "122. Best Time to Buy and Sell Stock II" Today! 📈
The key factor here is the greedy approach: summing all positive price differences for maximum profit.
My solution: [rentry.co/lc122] 💡
Let's learn and grow together! 🌱
#DSA #LeetCode #SoftwareEngineering](https://pbs.twimg.com/media/Gv9k6BDWQAA1jc4.png)
![TheSimpleCoder_'s tweet image. SOLVED "122. Best Time to Buy and Sell Stock II" Today! 📈
The key factor here is the greedy approach: summing all positive price differences for maximum profit.
My solution: [rentry.co/lc122] 💡
Let's learn and grow together! 🌱
#DSA #LeetCode #SoftwareEngineering](https://pbs.twimg.com/media/Gv9k8F4WwAAVkCR.jpg)
SOLVED "238. Product of Array Except Self" Today! ✖️ Brute-Force: O(N^2) Time ⏳ Optimized: O(N) Time with O(1) Space ✅ My solution: [rentry.co/lc238] 💡 Let's learn and grow together! 🌱 #DSA #LeetCode #100DaysOfCode #algorithms
![TheSimpleCoder_'s tweet image. SOLVED "238. Product of Array Except Self" Today! ✖️
Brute-Force: O(N^2) Time ⏳
Optimized: O(N) Time with O(1) Space ✅
My solution: [rentry.co/lc238] 💡
Let's learn and grow together! 🌱
#DSA #LeetCode #100DaysOfCode #algorithms](https://pbs.twimg.com/media/Gv5_y1eXsAAzn7z.jpg)
![TheSimpleCoder_'s tweet image. SOLVED "238. Product of Array Except Self" Today! ✖️
Brute-Force: O(N^2) Time ⏳
Optimized: O(N) Time with O(1) Space ✅
My solution: [rentry.co/lc238] 💡
Let's learn and grow together! 🌱
#DSA #LeetCode #100DaysOfCode #algorithms](https://pbs.twimg.com/media/Gv5_zs0WgAA9ymG.jpg)
🔥 Got my first LeetCode badge ever - 50 active days! 📆 Showed up daily, even on the tough days. 🙌 Feels great to see the progress. 💻 Going to keep learning and growing! #LeetCode #CodingJourney #Consistency #Milestone #KeepGoing #PracticeDaily
SOLVED `189. Rotate Array` Today! 🔄 Brute-Force: O(N⋅K) Time, TLE ⏳ Optimized: O(N) Time, O(1) Space ✅ Key: In-place rotation using the three-step reverse method. 💡My solution: [rentry.co/lc189] Learn & grow!🌱 #DSA #LeetCode
![TheSimpleCoder_'s tweet image. SOLVED `189. Rotate Array` Today! 🔄
Brute-Force: O(N⋅K) Time, TLE ⏳
Optimized: O(N) Time, O(1) Space ✅
Key: In-place rotation using the three-step reverse method.
💡My solution: [rentry.co/lc189]
Learn &amp; grow!🌱
#DSA #LeetCode](https://pbs.twimg.com/media/GvppLKeWIAE7aXE.png)
![TheSimpleCoder_'s tweet image. SOLVED `189. Rotate Array` Today! 🔄
Brute-Force: O(N⋅K) Time, TLE ⏳
Optimized: O(N) Time, O(1) Space ✅
Key: In-place rotation using the three-step reverse method.
💡My solution: [rentry.co/lc189]
Learn &amp; grow!🌱
#DSA #LeetCode](https://pbs.twimg.com/media/GvppMaRWsAAtOf5.png)
SOLVED `121. Best Time to Buy and Sell Stock` Today! 📈 Brute-Force: TLE⏳ Optimized: Works ✅ Key: Optimized to single pass, tracking min buy price💡My solution: [rentry.co/lc121] Learn & grow! #DSA #LeetCode
![TheSimpleCoder_'s tweet image. SOLVED `121. Best Time to Buy and Sell Stock` Today! 📈
Brute-Force: TLE⏳
Optimized: Works ✅
Key: Optimized to single pass, tracking min buy price💡My solution: [rentry.co/lc121]
Learn &amp; grow!
#DSA #LeetCode](https://pbs.twimg.com/media/GvlZi3pWYAEBqiq.png)
![TheSimpleCoder_'s tweet image. SOLVED `121. Best Time to Buy and Sell Stock` Today! 📈
Brute-Force: TLE⏳
Optimized: Works ✅
Key: Optimized to single pass, tracking min buy price💡My solution: [rentry.co/lc121]
Learn &amp; grow!
#DSA #LeetCode](https://pbs.twimg.com/media/GvlZj8ibQAAvSSo.png)
SOLVED🥇 "26. Remove Duplicates from Sorted Array" Today. - Brute-Force: Use a space of O(n) 💡 - Optimized: Use a space of O(1) ✌️ The key factor here is we have to modify the array in place. My solution: [rentry.co/lc26] Let's learn and grow together.📈 #DSA #LeetCode
![TheSimpleCoder_'s tweet image. SOLVED🥇 "26. Remove Duplicates from Sorted Array" Today.
- Brute-Force: Use a space of O(n) 💡
- Optimized: Use a space of O(1) ✌️
The key factor here is we have to modify the array in place.
My solution: [rentry.co/lc26]
Let's learn and grow together.📈
#DSA #LeetCode](https://pbs.twimg.com/media/GvjrvjKWMAA8aoW.png)
![TheSimpleCoder_'s tweet image. SOLVED🥇 "26. Remove Duplicates from Sorted Array" Today.
- Brute-Force: Use a space of O(n) 💡
- Optimized: Use a space of O(1) ✌️
The key factor here is we have to modify the array in place.
My solution: [rentry.co/lc26]
Let's learn and grow together.📈
#DSA #LeetCode](https://pbs.twimg.com/media/GvjrxZGakAAexfP.png)
![TheSimpleCoder_'s tweet image. SOLVED🥇 "26. Remove Duplicates from Sorted Array" Today.
- Brute-Force: Use a space of O(n) 💡
- Optimized: Use a space of O(1) ✌️
The key factor here is we have to modify the array in place.
My solution: [rentry.co/lc26]
Let's learn and grow together.📈
#DSA #LeetCode](https://pbs.twimg.com/media/Gvjr01SakAAsxDb.png)
Have you ever heard about the Boyer-Moore Voting Algorithm💡? Today I solved `169. Majority Element` on LeetCode 🧑💻 - Brute-Force: Used Nested Loops ✌️ - Better: Used a HashMap #️⃣ - Optimized: Moore's Algorithm 💪 Solution: [rentry.co/lc169] Learn and grow together. ❤️
![TheSimpleCoder_'s tweet image. Have you ever heard about the Boyer-Moore Voting Algorithm💡?
Today I solved `169. Majority Element` on LeetCode 🧑💻
- Brute-Force: Used Nested Loops ✌️
- Better: Used a HashMap #️⃣
- Optimized: Moore's Algorithm 💪
Solution: [rentry.co/lc169] Learn and grow together. ❤️](https://pbs.twimg.com/media/GvbFTVGboAA5QGq.png)
![TheSimpleCoder_'s tweet image. Have you ever heard about the Boyer-Moore Voting Algorithm💡?
Today I solved `169. Majority Element` on LeetCode 🧑💻
- Brute-Force: Used Nested Loops ✌️
- Better: Used a HashMap #️⃣
- Optimized: Moore's Algorithm 💪
Solution: [rentry.co/lc169] Learn and grow together. ❤️](https://pbs.twimg.com/media/GvbFVG2WAAADyAr.png)
![TheSimpleCoder_'s tweet image. Have you ever heard about the Boyer-Moore Voting Algorithm💡?
Today I solved `169. Majority Element` on LeetCode 🧑💻
- Brute-Force: Used Nested Loops ✌️
- Better: Used a HashMap #️⃣
- Optimized: Moore's Algorithm 💪
Solution: [rentry.co/lc169] Learn and grow together. ❤️](https://pbs.twimg.com/media/GvbFWlEX0AADl4K.png)
Move Zeroes on LeetCode done! 😎 I used the two-pointer strategy for efficiently moving non-zeros in front. So clean! My solution: [rentry.co/lc283] <- Check it out! #DSA #LeetCode #Arrays #TwoPointers #Coding #ProblemSolving #DailyCode #foryou
![TheSimpleCoder_'s tweet image. Move Zeroes on LeetCode done! 😎
I used the two-pointer strategy for efficiently moving non-zeros in front. So clean!
My solution: [rentry.co/lc283] &lt;- Check it out!
#DSA #LeetCode #Arrays #TwoPointers #Coding #ProblemSolving #DailyCode #foryou](https://pbs.twimg.com/media/GvWFzG8aYAMgPqY.png)
Best Sightseeing Pair on LeetCode done! 🎉 The real trick was optimizing to a single pass by separating (values[i] + i) and (values[j] - j). My solution: [rentry.co/lc1014] - Check this! #DSA #LeetCode #Algorithms #Coding #100DaysOfCode #ProblemSolving #foryou
![TheSimpleCoder_'s tweet image. Best Sightseeing Pair on LeetCode done! 🎉
The real trick was optimizing to a single pass by separating (values[i] + i) and (values[j] - j).
My solution: [rentry.co/lc1014] - Check this!
#DSA #LeetCode #Algorithms #Coding #100DaysOfCode #ProblemSolving #foryou](https://pbs.twimg.com/media/GvQ8SDJXMAAnX0-.png)
Maximum Product Subarray on LeetCode done! 💥 Figuring out those negatives and zeros was the real trick. My solution: [rentry.co/lc152] - Check this; it will really help you! #DSA #LeetCode #Coding #Algorithms #DevCommunity #ProblemSolving #CodeLife
![TheSimpleCoder_'s tweet image. Maximum Product Subarray on LeetCode done! 💥 Figuring out those negatives and zeros was the real trick.
My solution: [rentry.co/lc152] - Check this; it will really help you!
#DSA #LeetCode #Coding #Algorithms #DevCommunity #ProblemSolving #CodeLife](https://pbs.twimg.com/media/GvI2cg_aAAI9qhw.png)
Big win on LC 918: Max Sum Circular Subarray today! 🎉 Learned to apply Kadane's algorithm for circulars (totalSum - minSum). The all-negative case was a good challenge! My solution: [rentry.co/lc918] #Algorithms #ProblemSolving #TechJourney
![TheSimpleCoder_'s tweet image. Big win on LC 918: Max Sum Circular Subarray today! 🎉 Learned to apply Kadane's algorithm for circulars (totalSum - minSum). The all-negative case was a good challenge!
My solution: [rentry.co/lc918]
#Algorithms #ProblemSolving #TechJourney](https://pbs.twimg.com/media/Gu8XzHmWQAAViuw.png)
Tackled LeetCode 53 (Maximum Subarray). Kadane’s Algorithm finally made sense. 👉 Solution: [rentry.co/lc53] How did you first understand Kadane’s? #100DaysOfCode #DSA #Leetcode #foryou
![TheSimpleCoder_'s tweet image. Tackled LeetCode 53 (Maximum Subarray).
Kadane’s Algorithm finally made sense.
👉 Solution: [rentry.co/lc53]
How did you first understand Kadane’s?
#100DaysOfCode #DSA #Leetcode #foryou](https://pbs.twimg.com/media/Gu3Ub2TXQAAOHw-.png)
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