Leetcode Problem 1559. Detect Cycles in 2D Grid
Leetcode Solutions
Depth-First Search (DFS) to Detect Cycles in aD Grid
- Iterate over each cell in the grid.
- If the cell is unvisited, start a DFS from this cell.
- In DFS, mark the current cell as visited.
- Explore all possible directions (up, down, left, right) from the current cell.
- If the adjacent cell has the same value and is not the immediate previous cell, continue the DFS from that cell.
- If an adjacent cell is already visited and is not the immediate previous cell, a cycle is detected.
- If no cycle is detected after exploring all cells, return false.
Breadth-First Search (BFS) to Detect Cycles in aD Grid
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