Snakes and Ladders Leetcode | Leetcode 909 | Simple BFS | Leetcode POTD

Snakes and Ladders Leetcode | Leetcode 909 | Simple BFS | Leetcode POTD


🚀 Approach Overview:
We start from cell 1 and explore all possible moves using a queue (BFS)
Use a HashSet to track visited cells
Handle ladders and snakes using board values
Track steps level by level to get the minimum number of dice rolls
Use a helper function to convert cell numbers to coordinates considering zigzag order

Initialize BFS:

Start from cell 1.
Use a queue to store positions to explore.
Use a HashSet called visited to avoid visiting the same cell multiple times.

Run BFS:
While the queue is not empty:
For each element in the queue (each level of BFS), check all dice moves from 1 to 6.

For each move:
If the new cell goes beyond n * n (last cell), skip it.
Calculate the board coordinates using a helper method getCoordinates.
If there's a ladder or snake (i.e., board[row][col] != -1), move to that destination.
If the destination is not visited, add it to the queue and mark as visited.

Track Steps:
After processing each level of BFS (one dice roll), increment the step count.
If the destination cell n * n is reached, return the number of steps.
If no path leads to the end, return -1.


Queries (Keywords):
POTD Leetcode, Leetcode 909, Snakes and Ladders, leetcode POTD, Leetcode Solution, leetcode today question, leetcode Daily Question, leetcode daily solution, leetcode easy questions, potd leetcode, leetcode solutions, data structures and algorithms, easy leetcode, coding challenges, daily coding, Leetcode 909 in java, problem solving, Leetcode potd today, leetcode potd today, leetcode problems java, leetcode problem solving, leetcode potd solution, leetcode 909 solution, leetcode 909 java, coding, algorithms, leetcode challenge, algorithm tricks, leetcode 909 java, java leetcode 909, maths in 909 leetcode, leetcode 909 maths, time approach in 909 leetcode, Dsa Maths, Maths in Dsa, Algo in leetcode 909, Trick in leetcode 909, how to recognise pattern in leetcode questions,Snakes and Ladders, snake and ladder implementation,snake and ladder implementation indetails,ladder and snake implementation,snakes and ladder interview question,Snakes and Ladder interview question,leetcode potd ,Leetcode potd,Leetcode Problem of the day.






#java #cpp #programming #coding #leetcode #leetcodedailychallenge #leetcodearray #codesolution #codingforbeginners #codinginterview #SnakesAndLadders #JavaDSA #BFS #CodingInterview #LeetcodeSolutions #GraphAlgorithms