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Leetcode 41: First Missing Positive Integer
2+ week, 6+ day ago (239+ words) Base Cases: What if all the numbers are greater than n? Then we can simply return 1. For eg: [7,8,9,11,12]. Here all the numbers are greater than the length of the array, which is 5. In this case the first missing positive integer…...
The Simplex Method, Explained Like an Algorithm (with a Free Step-by-Step Solver)
1+ mon, 3+ week ago (305+ words) Here is the algorithm stripped down to its logic. Every LP problem has three parts: an objective function to maximize or minimize, e.g. Z = 5x1 + 4x2 a set of linear constraints, e.g. 6x1 + 4x2 Geometrically, the constraints carve out a feasible region (a polytope). The optimum…...
Solving Every CSES Problems in Rust - #1 Number Spiral
2+ mon, 18+ hour ago (407+ words) The constraints for x, y is 10^9, given these constraints the problem cannot be solved by actually building the spiral - but a static function with returns the solution in O(1) / O(logn). The problem is a simple pattern matching problem - the…...
HLD Fundamentas #7: Back-of-the-Envelope Calculations
2+ mon, 2+ week ago (360+ words) When designing systems like Facebook, WhatsApp, Netflix, Amazon, or Instagram, one of the first questions a system designer asks is: Before discussing databases, load balancers, microservices, or caching layers, we need a rough understanding of the scale. This is where…...
What I learned after solving 100 Leetcode Problems
2+ mon, 2+ week ago (370+ words) Within 4 days, I managed to successfully complete this challenge and solve 100 Leetcode problems, which became an incredible milestone for me. In this article, I want to share 4 lessons I learned during this challenge, that are truly priceless and that will…...
N-th root of a number | Binary Search on Answer
2+ mon, 3+ week ago (6+ words) ... Tagged with algorithms, interview, java, tutorial....