Developer X @Developer_X01
MERN Stack Developer | Architecting Scalable Solutions | Diving into AWS, Java & Microservices | Where Code Meets Product Strategy Gurgaon Joined July 2025-
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Day 22 of #100DaysOfCode Solved the Fibonacci Number problem on LeetCode with an iterative DP approach. Achieved 0ms runtime, top 100% performance. Shows how iteration optimizes recursion for efficiency. #LeetCode #Java #DynamicProgramming #Coding
Day 21 of #100DaysOfCode Climbing Stairs in Java with 0ms runtime, beating 100% of submissions. Used an optimized iterative Fibonacci approach, reducing space complexity from O(n) to O(1). Efficient for large inputs, showcasing simplified dynamic programming. #Leetcode #Java #DSA
Day 20 of #100DaysOfCode LeetCode 50: Pow(x, n) Achieved 0ms runtime, top 100% Used fast exponentiation to compute x^n efficiently. Handled n = Integer.MIN_VALUE safely using long. Clean logic, optimal time: O(log n) #Java #LeetCode #DSA #Coding
Day 19 of #100DaysOfCode Solved "Largest Number" on LeetCode using custom sorting in Java. Converted numbers to strings, sorted by (b+a).compareTo(a+b) for max concatenation. Runtime: 5ms, beats 98.6%. Mastering comparator logic is key.
Day 19 #100DaysOfCode Achieved 98.39% runtime (5ms) on LeetCode's "Largest Number." Optimized: • Ints to strings • Sort w/ custom comparator (b+a).compareTo(a+b) • Handle leading 0s • Use StringBuilder #Java #LeetCode
Day 18 of #100DaysOfCode Solved LeetCode's "Insert Interval" in Java, beating 98.91% in runtime and 77.09% in memory. Used a 3-step approach: - Add non-overlapping intervals - Merge overlaps - Add remaining Efficient and readable. #Java #LeetCode #Coding
Day 17 of #100DaysOfCode Solved the Merge Intervals problem on LeetCode with a unique range-based approach. Runtime: 1 ms — Beats 99.86% Efficiently handled overlapping with preprocessing and range compression using min-max indexing. #Java #LeetCode #Coding #DSA #Algorithm
Day 16 of #100DaysOfCode Solved "Sort Colors" on LeetCode with 0ms runtime! Used Dutch National Flag algorithm for efficient in-place sorting. #Java #LeetCode #100DaysOfCode #CodingInterview #DSA
Day 15 of #100DaysOfCode Solved LeetCode 1662: Check if two string arrays form the same string. Used StringBuilder for efficient concatenation. 0 ms runtime, beats 100% of solutions. Clean logic, clean result. #Java #LeetCode #ProblemSolving #CodeSmart
Day 14 of #100DaysOfCode Length of Last Word in Java with 0ms runtime, beating 100% of solutions! Efficient reverse traversal, no split/trim needed—pure logic. Small wins keep momentum strong. #LeetCode #Java #ProblemSolving #CodeNewbie
Day 13 of #100DaysOfCode Solved Add Binary on LeetCode with a 1ms runtime (top 0.2%)! Used a two-pointer approach with StringBuilder for binary addition from end to start. Efficient and clean 💡 #Java #LeetCode #Coding #100DaysOfCode #DevJourney
Day 12 of #100DaysOfCode I achieved "Accepted" status, passing all 30 test cases! My CountAndSay implementation has excellent runtime (2ms, beating 92.46%) and efficient memory usage (41.3MB, beating 67.13%). #CodingSuccess #Java #Algorithms
Day 11 of #100daysofcoding LeetCode grind continues! Just conquered another challenge: reversing words in a string. Each line of code brings me closer to mastering algorithms. #leetcode #coding #java #algorithms #problemsolving #developer
Day 10 of #100DaysOfCode Solved "Set Matrix Zeroes" on LeetCode using in-place optimization (no extra space). Used the first row and column as markers to track zeros. Java | 1ms | Beats 72% Comment down for the full code. #LeetCode #DSA #Java #Coding #CodeNewbie #ProblemSolving
Day9 - #100DaysOfCode LeetCode's "Missing Number"! My Java solution using an XOR bit manipulation trick was accepted with a 0ms runtime, beating 100% of submissions. This approach shows how bitwise operations can create highly efficient code. #Java #Algorithms
Day 8 - #100DaysOfCode Solved "Find the Duplicate Number" on LeetCode using Floyd's Cycle Detection Algorithm in Java. Uses constant space, no array modifications. ⏱ Runtime: 4ms | 💾 Memory: 56.98MB #LeetCode #Java #Algorithms #DSA #Coding
Solved "Merge Sorted Array" on LeetCode with 0ms runtime using an efficient in-place Java approach. Merged from the end to avoid extra space. Clean, fast, and interview-friendly! #LeetCode #Java #DSA #Coding #Algorithms #100DaysOfCode
Day 06 #100DaysOfCode Solved LeetCode's Majority Element in 1ms | Beats 99.85% 🚀 Used Boyer-Moore Voting Algorithm – O(n) time, O(1) space | Efficient & clean. Check the code below for clarity. #LeetCode #Java #DSA #Algorithms
#100DaysOfCode - Day 5 Rotated an array in-place using three-step reversal. Runtime: 0ms in Java. O(n) solution to a classic. Tip: Use k = k % n to avoid extra rotations. In-place logic saves space. #TechTwitter #ProblemSolving #LeetCode #Java #DSA #Coding
#100Daysofcode - Day 4 Rotated an array in-place using a three-step reverse method in Java. Runtime: 0ms, beats 100%. Efficient, no extra space. See image for clarity. #LeetCode #Java #DSA #100Daysofcode
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