DEV Community: Yash The latest articles on DEV Community by Yash (@yash_a989d3c80fefb4c31c8e). https://dev.to/yash_a989d3c80fefb4c31c8e https://media2.dev.to/dynamic/image/width=90,height=90,fit=cover,gravity=auto,format=auto/https:%2F%2Fdev-to-uploads.s3.amazonaws.com%2Fuploads%2Fuser%2Fprofile_image%2F3693735%2Fe6bda78d-0a89-4aa7-bfcb-8ef5123e46ad.jpeg DEV Community: Yash https://dev.to/yash_a989d3c80fefb4c31c8e en Day 3 / 90 ā€“ Two Pointer Pattern šŸ”„ Yash Wed, 07 Jan 2026 17:35:10 +0000 https://dev.to/yash_a989d3c80fefb4c31c8e/day-3-90-two-pointer-pattern-370g https://dev.to/yash_a989d3c80fefb4c31c8e/day-3-90-two-pointer-pattern-370g <p><a href="https://media2.dev.to/dynamic/image/width=800%2Cheight=%2Cfit=scale-down%2Cgravity=auto%2Cformat=auto/https%3A%2F%2Fdev-to-uploads.s3.amazonaws.com%2Fuploads%2Farticles%2Fpgr5cd2gdg51q12txvmq.png" class="article-body-image-wrapper"><img src="https://media2.dev.to/dynamic/image/width=800%2Cheight=%2Cfit=scale-down%2Cgravity=auto%2Cformat=auto/https%3A%2F%2Fdev-to-uploads.s3.amazonaws.com%2Fuploads%2Farticles%2Fpgr5cd2gdg51q12txvmq.png" alt=" " width="800" height="381"></a><br> <a href="https://media2.dev.to/dynamic/image/width=800%2Cheight=%2Cfit=scale-down%2Cgravity=auto%2Cformat=auto/https%3A%2F%2Fdev-to-uploads.s3.amazonaws.com%2Fuploads%2Farticles%2Fv7h3gi3jjeidfa02vbir.png" class="article-body-image-wrapper"><img src="https://media2.dev.to/dynamic/image/width=800%2Cheight=%2Cfit=scale-down%2Cgravity=auto%2Cformat=auto/https%3A%2F%2Fdev-to-uploads.s3.amazonaws.com%2Fuploads%2Farticles%2Fv7h3gi3jjeidfa02vbir.png" alt=" " width="800" height="383"></a><br> <a href="https://media2.dev.to/dynamic/image/width=800%2Cheight=%2Cfit=scale-down%2Cgravity=auto%2Cformat=auto/https%3A%2F%2Fdev-to-uploads.s3.amazonaws.com%2Fuploads%2Farticles%2Ft2srgxddo1rgepis8sxx.png" class="article-body-image-wrapper"><img src="https://media2.dev.to/dynamic/image/width=800%2Cheight=%2Cfit=scale-down%2Cgravity=auto%2Cformat=auto/https%3A%2F%2Fdev-to-uploads.s3.amazonaws.com%2Fuploads%2Farticles%2Ft2srgxddo1rgepis8sxx.png" alt=" " width="800" height="373"></a><br> <a href="https://media2.dev.to/dynamic/image/width=800%2Cheight=%2Cfit=scale-down%2Cgravity=auto%2Cformat=auto/https%3A%2F%2Fdev-to-uploads.s3.amazonaws.com%2Fuploads%2Farticles%2Ffbmy3lri0cmnnelrls44.png" class="article-body-image-wrapper"><img src="https://media2.dev.to/dynamic/image/width=800%2Cheight=%2Cfit=scale-down%2Cgravity=auto%2Cformat=auto/https%3A%2F%2Fdev-to-uploads.s3.amazonaws.com%2Fuploads%2Farticles%2Ffbmy3lri0cmnnelrls44.png" alt=" " width="800" height="381"></a>Focused on optimizing array problems using two pointers.<br> āœ… 88 Merge Sorted Array (in-place, O(m+n))<br> āœ… 2824 Count Pairs &lt; Target<br> āœ… 1 Two Sum<br> āœ… 167 Two Sum II</p> <p>Thinking in patterns &gt; brute force šŸš€</p> <h1> Day3 #DSA </h1> Day 2 / 90 ā€“ Two Pointer Pattern šŸ” | DSA Journey šŸš€ Yash Tue, 06 Jan 2026 17:17:44 +0000 https://dev.to/yash_a989d3c80fefb4c31c8e/day-2-90-two-pointer-pattern-dsa-journey-50am https://dev.to/yash_a989d3c80fefb4c31c8e/day-2-90-two-pointer-pattern-dsa-journey-50am <p>oday I focused on mastering the Two Pointer Pattern, a powerful technique to optimize brute-force solutions from O(nĀ²) ā†’ O(n).</p> <p>šŸ“Œ What I learned</p> <p>When &amp; where to use two pointers</p> <p>Works best with arrays, strings &amp; linear data structures</p> <p>Helps write clean, efficient interview-ready code</p> <p>šŸ§  Problems Solved<br> āœ… 125. Valid Palindrome<br> āœ… 344. Reverse String<br> āœ… 977. Squares of a Sorted Array<br> āœ… 680. Valid Palindrome II<br> <a href="https://media2.dev.to/dynamic/image/width=800%2Cheight=%2Cfit=scale-down%2Cgravity=auto%2Cformat=auto/https%3A%2F%2Fdev-to-uploads.s3.amazonaws.com%2Fuploads%2Farticles%2Fyzyn22upbfed64zvb285.png" class="article-body-image-wrapper"><img src="https://media2.dev.to/dynamic/image/width=800%2Cheight=%2Cfit=scale-down%2Cgravity=auto%2Cformat=auto/https%3A%2F%2Fdev-to-uploads.s3.amazonaws.com%2Fuploads%2Farticles%2Fyzyn22upbfed64zvb285.png" alt=" " width="800" height="450"></a><br> <a href="https://media2.dev.to/dynamic/image/width=800%2Cheight=%2Cfit=scale-down%2Cgravity=auto%2Cformat=auto/https%3A%2F%2Fdev-to-uploads.s3.amazonaws.com%2Fuploads%2Farticles%2Futsj4ph426fyjf5oc23x.png" class="article-body-image-wrapper"><img src="https://media2.dev.to/dynamic/image/width=800%2Cheight=%2Cfit=scale-down%2Cgravity=auto%2Cformat=auto/https%3A%2F%2Fdev-to-uploads.s3.amazonaws.com%2Fuploads%2Farticles%2Futsj4ph426fyjf5oc23x.png" alt=" " width="800" height="450"></a></p> <p>ā±ļø Most solutions achieved O(n) time &amp; O(1) space</p> <p>Key takeaway: Pattern recognition &gt; memorizing solutions.</p> <p>On to Day 3 šŸ’Ŗ</p> <h1> Day2 #DSA #TwoPointers #CodingJourney #90DaysOfDSA #LeetCode #InterviewPrep </h1> Day 0: Starting My DSA Journey Yash Mon, 05 Jan 2026 08:05:32 +0000 https://dev.to/yash_a989d3c80fefb4c31c8e/day-0-starting-my-dsa-journey-1l0n https://dev.to/yash_a989d3c80fefb4c31c8e/day-0-starting-my-dsa-journey-1l0n <p>Day 0 / 90 ā€“ DSA Journey Begins šŸš€</p> <p>Today Iā€™m officially starting my 90-day Data Structures &amp; Algorithms challenge.</p> <p>šŸŽÆ Goal: Become strong in problem-solving &amp; interview-ready<br> šŸ“š Starting level: Beginner / Revising basics<br> ā° Daily commitment: 2ā€“3 hours<br> šŸ’» Platforms: LeetCode | GFG</p> <p>This is Day 0 ā€” planning, mindset &amp; commitment.<br> Real coding starts from Day 1 šŸ’Ŗ</p> <p>Consistency &gt; Motivation</p> <h1> Day0 #DSAChallenge #90DaysOfDSA #CodingJourney #SecondYear #FutureEngineer </h1> algorithms beginners challenge interview