Tech Blog by Pawan Kumar | SaaS, Web Development & Cloud Solutions

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Backtracking: The Algorithm That Finds Solutions by Intelligent Trial and Error

Nov 18, 2025 • 12 min • Pawan Kumar

backtracking recursion constraint-satisfaction

You’re building a Sudoku solver for your mobile app. The naive approach? Try every possible number in every cell until...

Sep 05, 2025 • 12 min • Pawan Kumar

dynamic-programming memoization optimization

You’re staring at a problem that should be simple. Calculate the 50th Fibonacci number. Your recursive solution works perfectly for...

Aug 10, 2025 • 8 min • Pawan Kumar

binary-search searching-algorithms divide-and-conquer

Picture this: You’re searching for a specific frame in a 2-hour Netflix movie. That’s 172,800 frames at 24fps. A naive...

Jul 28, 2025 • 17 min • Pawan Kumar

Sorting Algorithms Data Structures Algorithms

Master sorting algorithms from bubble sort to quicksort. Learn when to use each algorithm, understand their trade-offs, and ace your...