AMAlex Mateoinalexmateo.hashnode.dev·May 10 · 11 min readGraph Algorithms for Coding Interviews: When to Use BFS, DFS, or DijkstraGraphs are the most feared topic in coding interviews — not because they're impossible, but because most people learn the algorithms in isolation without understanding when to use each one. This guide00
FCFelipe Castilloinopencodex.hashnode.dev·Apr 4 · 9 min readHow to Solve Your First LeetCode Problem: A Beginner's GuideHow to Solve Your First LeetCode Problem: A Beginner's Guide LeetCode has become the favorite playground for developers preparing for technical interviews. With over 3,500 problems ranging from "easy"00
Hhimanshuinblogs-himanshu.hashnode.dev·Feb 28 · 3 min readDay 20 - Search in Rotated Sorted ArrayQuestion You are given an array of length n which was originally sorted in ascending order. It has now been rotated between 1 and n times. For example, the array nums = [1,2,3,4,5,6] might become: [300
Hhimanshuinblogs-himanshu.hashnode.dev·Feb 23 · 3 min readDay 19 - Find Minimum in Rotated Sorted ArrayQuestion You are given an array of length n which was originally sorted in ascending order. It has now been rotated between 1 and n times. For example, the array nums = [1,2,3,4,5,6] might become: [300
Hhimanshuinblogs-himanshu.hashnode.dev·Feb 22 · 3 min readDay 18 - Koko Eating BananasQuestion You are given an integer array piles where piles[i] is the number of bananas in the ith pile. You are also given an integer h, which represents the number of hours you have to eat all the ban00
Hhimanshuinblogs-himanshu.hashnode.dev·Feb 21 · 3 min readDay 17 - Search a 2d MatrixQuestion You are given an m x n 2-D integer array matrix and an integer target. Each row in matrix is sorted in non-decreasing order. The first integer of every row is greater than the last integer 00
Hhimanshuinblogs-himanshu.hashnode.dev·Feb 20 · 4 min readDay 16 - Daily TemperaturesQuestion You are given an array of integers temperatures where temperatures[i] represents the daily temperatures on the ith day. Return an array result where result[i] is the number of days after the 00
Hhimanshuinblogs-himanshu.hashnode.dev·Feb 19 · 2 min readDay 15 - Evaluate Reverse Polish NotationQuestion You are given an array of strings tokens that represents a valid arithmetic expression in Reverse Polish Notation. Return the integer that represents the evaluation of the expression. The operands may be integers or the results of other ope...00
Hhimanshuinblogs-himanshu.hashnode.dev·Feb 18 · 3 min readDay 14 - Min StackQuestion Design a stack class that supports the push, pop, top, and getMin operations. MinStack() initializes the stack object. void push(int val) pushes the element val onto the stack. void pop() removes the element on the top of the stack. int ...00
VHVarchasv Hooninvarchasvh.hashnode.dev·Feb 17 · 2 min readLeetCode 262: Trips and UsersDate: February 17, 2026Category: SQLTime Taken: 30 minutesDifficulty: Hard Problem Statement The cancellation rate is computed by dividing the number of canceled (by client or driver) requests with unbanned users by the total number of requests with...00
