4.Breadth first search #dsa #coding #algorithm

👍Problems solve using BFS
🔹 Classic Graph Problems
Shortest Path in an Unweighted Graph
BFS guarantees the shortest path in terms of edge count.
Example: Find the minimum number of moves in a game board.
Check if a Graph is Bipartite
Use BFS with coloring to check if we can divide graph nodes into 2 sets.
Cycle Detection in an Undirected Graph
BFS with parent tracking can detect cycles.
Connected Components in a Graph
BFS can traverse each component to count them.

🔹 Grid / Matrix Problems
Shortest Path in a Binary Matrix (0 = free, 1 = blocked)
BFS is used because all edges are equal weight.
Word Ladder Problem
Transform one word into another by changing one letter at a time.
Number of Islands Problem
BFS can flood-fill connected lands.
Rotting Oranges Problem
BFS simulates spreading process level by level (multi-source BFS).
Knight’s Minimum Moves on a Chessboard
BFS finds the least number of moves.

🔹 Tree Problems
Level Order Traversal of a Tree
BFS naturally explores level by level.
Find the Minimum Depth of a Binary Tree
BFS finds the first leaf encountered.
Cousins in Binary Tree
BFS helps check nodes at the same level.

🔹 Advanced BFS Variants
Minimum Steps to Reach Target State (State-Space Problems)
Example: Solving puzzles (e.g., 8-puzzle, sliding puzzle).
Topological Sorting (Kahn’s Algorithm)
A BFS-based approach for DAGs.
Network Delay Time

BFS for unit weights (or Dijkstra for weighted).
dsa patterns, 25 dsa patterns, dsa patterns java, dsa patterns in java, dsa patterns python, dsa patterns telugu, dsa patterns striver, dsa patterns playlist, dsa patterns leetcode, must know dsa patterns, 20 dsa pattern, dsa patterns aryan singh, dsa pattern sheet, dsa patterns for interview, dsa pattterns questions, dsa pattern matching, dsa patterns for coding interviews, dsa pattern questions in java, patterns, dsa pattern questions apna college, dsapatterns, patterns in c++, coding patterns, patterns in java,dsa, learn dsa, dsa free, java dsa, dsa sheet, dsa course, c++ for dsa, dsa sheets, dsa in java, dsa with js, dsa roadmap, dsa journey, java for dsa, dsa bootcamp, dsa tutorial, dsa strategy, dsa patterns, how i start dsa, dsa using java, dsa with kunal, 20 dsa pattern, dsa c++ vs java, dsa cringe vote, dsa latest news, how to learn dsa, learn dsa in c++, best dsa course, how to start dsa, learn dsa in java, dsa roadmap 2026, dsa 2025 roadmap, dsa 2026 roadmap, dsa preparation, best dsa website, dsa hands on java

Видео 4.Breadth first search #dsa #coding #algorithm канала KEEP IT SORTED