Learn how to solve Number of Ways to Arrive at Destination with Dijkstra’s algorithm while counting paths. Clear intuition, commented…
Author: codeanddebug
Solve Minimum Multiplications to reach End with a clean BFS, modular math, and commented Python code. Easy steps, dry run,…
Given an array of integers nums and an integer target, return indices of the two numbers such that they add up to target. You may…
Solve “Cheapest Flights Within K Stops” (LeetCode 787) in plain Python using a BFS queue and a cost array. Learn…
Path With Minimum Effort made easy: understand LeetCode 1631 with a Dijkstra heap, 4-way moves, and fully commented Python code…
Given an array nums containing n distinct numbers in the range [0, n], return the only number in the range that is missing from the array.…
Given two sorted arrays a[] and b[], where each array may contain duplicate elements , the task is to return the elements in the union of the two arrays…
Given an array, arr of n integers, and an integer element x, find whether element x is present in the array. Return the index of…
Given an integer array nums, move all 0’s to the end of it while maintaining the relative order of the non-zero elements.…
Find the shortest clear path from the top-left to bottom-right of a 0-1 grid. We explain the intuition, walk through…