Solution (leetcode-in-java 1.22 API)

java.lang.Object
- g0601_0700.s0684_redundant_connection.Solution

```
public class Solution
extends Object
```
684 - Redundant Connection.
Medium

In this problem, a tree is an undirected graph that is connected and has no cycles.

You are given a graph that started as a tree with n nodes labeled from 1 to n, with one additional edge added. The added edge has two different vertices chosen from 1 to n, and was not an edge that already existed. The graph is represented as an array edges of length n where edges[i] = [a_i, b_i] indicates that there is an edge between nodes a_i and b_i in the graph.

Return an edge that can be removed so that the resulting graph is a tree of n nodes. If there are multiple answers, return the answer that occurs last in the input.

Example 1:

Input: edges = [[1,2],[1,3],[2,3]]

Output: [2,3]

Example 2:

Input: edges = [[1,2],[2,3],[3,4],[1,4],[1,5]]

Output: [1,4]

Constraints:
- n == edges.length
- 3 <= n <= 1000
- edges[i].length == 2
- 1 <= a_i < b_i <= edges.length
- a_i != b_i
- There are no repeated edges.
- The given graph is connected.

- Constructor Summary
  
  Constructors
  Constructor Description
  
  Solution()
- Method Summary
  
  All Methods Instance Methods Concrete Methods
  Modifier and Type Method Description
  
  int[] findRedundantConnection(int[][] edges)
  - Methods inherited from class java.lang.Object
    clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail
- Solution
```
public Solution()
```

Method Detail

findRedundantConnection

public int[] findRedundantConnection(int[][] edges)