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Find if Path Exists in Graph

Graph
easy
Score: 10

There is a bi-directional graph with n vertices, where each vertex is labeled from 0 to n - 1 (inclusive). The edges in the graph are represented as a 2D integer array edges, where each edges[i] = [ui, vi] denotes a bi-directional edge between vertex ui and vertex vi. Every vertex pair is connected by at most one edge, and no vertex has an edge to itself.

You want to determine if there is a valid path that exists from vertex source to vertex destination.

Given edges and the integers n, source, and destination, return 1 if there is a valid path from source to destination, or 0 otherwise.

Input Format:

First Parameter: Number of vertex n

Second Parameter: matrix edges of size mat_dims[0] x mat_dims[1]

Third parameter: number source

Fourth Parameter: number destination

Output Format:

Return the number.

Example 1:

"1"

Input: 
3
3 2
0 1
1 2
2 0
0
2
Output:
1
Explanation: 3 2 represents the size of the matrix. 
There are two paths from vertex 0 to vertex 2:
     -0->1->2
     -0->2

Example 2:

"1"

Input: 
6
5 2
0 1
0 2
3 5
5 4
4 3
0
5
Output:
0
Explanation: 5 2 represents the size of the matrix.
There is no path from vertex 0 to vertex 5.

Constraints:

  • 1 <= n <= 2 * 105
  • 0 <= edges.length <= 2 * 105
  • edges[i].length == 2
  • 0 <= ui, vi <= n - 1
  • ui != vi
  • 0 <= source, destination <= n - 1
  • There are no duplicate edges.
  • There are no self edges.
  • Expected Time Complexity: O(N)
  • Expected Auxiliary Space: O(N)
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