topological sort

Course Schedule

Determine if all courses can be completed by analyzing prerequisite dependencies using indegree tracking and topological…

Course Schedule II

Solve the 'Course Schedule II' problem using graph indegree and topological ordering, utilizing DFS or BFS to find the c…

Minimum Height Trees

Identify all roots of a tree that produce minimum height using graph indegree analysis and topological trimming.

Longest Increasing Path in a Matrix

Find the length of the longest increasing path in a matrix with given movement constraints using graph techniques.

Find Eventual Safe States

Solve the problem of finding eventual safe states in a directed graph using depth-first search and topological sorting.

Loud and Rich

Determine the quietest person richer than each individual using graph indegree analysis and topological ordering techniq…

Cat and Mouse

Determine the outcome of a two-player Cat and Mouse game on a graph using topological ordering and memoized dynamic prog…

Sort Items by Groups Respecting Dependencies

Sort items into groups while respecting dependencies using graph indegree tracking and topological ordering patterns eff…

Course Schedule IV

Determine if one course is a prerequisite of another using graph indegree tracking and topological ordering efficiently.

Strange Printer II

Solve Strange Printer II by building color dependencies from bounding rectangles and checking whether a topological orde…

Rank Transform of a Matrix

Compute a unique rank matrix using graph indegree with topological ordering, ensuring each element reflects its relative…

Cat and Mouse II

Cat and Mouse II requires determining if the mouse can reach food before being caught using graph and topological orderi…

Number of Restricted Paths From First to Last Node

Solve the problem of finding the number of restricted paths in a weighted undirected graph, leveraging graph algorithms …

Largest Color Value in a Directed Graph

Compute the maximum color frequency along any valid path in a directed graph using topological ordering and dynamic prog…

Count Ways to Build Rooms in an Ant Colony

Solve the problem of counting distinct ways to build rooms in an ant colony using dynamic programming and topological or…

Number of Ways to Arrive at Destination

Find the number of ways to travel from intersection 0 to n - 1 in the shortest time, using a graph-based approach.

Parallel Courses III

Solve Parallel Courses III by finding the minimum number of months to complete all courses using graph-based topological…

Find All Possible Recipes from Given Supplies

Determine all recipes you can prepare given initial supplies and ingredient dependencies, leveraging array scanning and …

Maximum Employees to Be Invited to a Meeting

Determine the maximum employees to invite based on favorite adjacency constraints using graph indegree and topological o…

All Ancestors of a Node in a Directed Acyclic Graph

Solve the All Ancestors of a Node in a Directed Acyclic Graph problem using graph traversal techniques like BFS, DFS, an…

Longest Path With Different Adjacent Characters

Find the longest path in a tree where adjacent nodes have different characters using graph DFS and topological reasoning…

Number of Increasing Paths in a Grid

Solve Number of Increasing Paths in a Grid by turning cell comparisons into a DAG and counting paths with topological DP…

Longest Cycle in a Graph

The problem asks to find the longest cycle in a directed graph with specific edge constraints.

Build a Matrix With Conditions

Solve the matrix-building problem by using graph indegree and topological sorting to satisfy given row and column constr…