# Total number of Spanning trees in a Cycle Graph

• Difficulty Level : Basic
• Last Updated : 14 Apr, 2021

Given the number of vertices in a Cycle graph. The task is to find the Total number of Spanning trees possible.
Note: A cycle/circular graph is a graph that contains only one cycle. A spanning tree is a shortest/minimum path in a graph that covers all the vertices of a graph.

Examples:

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```Input: Vertices = 3
Output: Total Spanning tree = 3

Input: Vertices = 4
Output: Total Spanning tree = 4```

Example 1:
For Cycle Graph with vertices = 3

Spanning Tree possible is 3

Example 2:
For Cycle Graph with vertices = 4

Spanning Tree possible is 4

So, the number of spanning treess will always be equal to the number of vertices in a cycle graph.

Below is the required implementation:

## C++

 `// C++ program to find number of``// spanning trees``#include ``using` `namespace` `std;` `// function that calculates the``// total Spanning tree``int` `Spanning(``int` `vertices)``{``    ``result = 0;` `    ``result = vertices;``    ``return` `result;``}` `// Driver code``int` `main()``{``    ``int` `vertices = 4;` `    ``cout << ``"Spanning tree = "` `<< Spanning(vertices);``    ``return` `0;``}`

## Java

 `// Java program to find number of``// spanning trees` `import` `java.io.*;` `class` `GFG {` `// function that calculates the``// total Spanning tree``static` `int` `Spanning(``int` `vertices)``{``    ``int` `result = ``0``;` `    ``result = vertices;``    ``return` `result;``}` `// Driver code``    ``public` `static` `void` `main (String[] args) {``    ``int` `vertices = ``4``;` `    ``System.out.println(``"Spanning tree = "` `+ Spanning(vertices));``    ``}``}``// This code is contributed ``// by chandan_jnu..`

## Python3

 `# Python program to find number of``# spanning trees` `# function that calculates the``# total Spanning tree``def` `Spanning( vertices):``        ``result ``=` `0` `    ``result ``=` `vertices``    ``return` `result` `# Driver code``vertices ``=` `4``print``(``"Spanning tree = "``,``       ``Spanning(vertices))` `# This code is contributed``# by Sanjit_Prasad`

## C#

 `// C# program to find number``// of spanning trees``using` `System;` `// function that calculates``// the total Spanning tree``class` `GFG``{``public` `int` `Spanning(``int` `vertices)``{``    ``int` `result = 0;` `    ``result = vertices;``    ``return` `result;``}` `// Driver code``public` `static` `void` `Main()``{``    ``GFG g = ``new` `GFG();``    ``int` `vertices = 4;` `    ``Console.WriteLine(``"Spanning tree = {0}"``,  ``                      ``g.Spanning(vertices));``}``}` `// This code is contributed``// by Soumik`

## PHP

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## Javascript

 ``
Output:
`Spanning tree = 4`

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