找到将赢得硬币游戏的玩家

给定N 个硬币，任务是找到谁赢得硬币游戏。
硬币游戏是一种游戏，其中每个玩家从给定的N 个硬币中挑选硬币，这样他可以在一个回合中选择 1 到 5 个硬币的硬币，并且游戏对两个玩家都继续。选择最后一枚硬币的玩家输掉游戏。
例子：

Input: N = 4
Output: First Player
Explanation:
Player 1 pick 3 coins and 
Player 2 pick last coin

Input: N = 7
Output: Second Player

方法：

由于玩家可以拿走 1 到 5 个硬币，如果玩家输了就意味着他只有 1 个硬币，否则他可能拿走的硬币比可用硬币少 1 个，并迫使另一个玩家输掉。所以现在我们将考虑第二个玩家要赢的情况，这意味着第一个玩家只有一个硬币。
当N = 1时，第二个玩家将获胜，当N = 2到6时，第一个玩家可以选择比N少1个硬币，并迫使第二个玩家输掉所以丢弃它们，当N = 7时，第一个玩家可以选择硬币1到5，那会留下6到2的硬币，然后第二个玩家可以选择1到5，赢得第二个玩家会聪明地选择少1个硬币迫使先松，所以基本上从1开始，所有数字在 6 的差距上(无论第一个玩家选择什么，第二个玩家将选择等于 6 的硬币和第一个玩家选择的硬币)将是第二个玩家的胜利。
最后，我们只需要检查 n 是否为 6*c+1 形式，如果它是第二个玩家将获胜，否则，第一个玩家将获胜。

下面是上述方法的实现：

C++

// C++ program to find the player
// who wins the game
 
#include 
using namespace std;
 
// Function to check the
// wining player
void findWinner(int n)
{
    // As discussed in the
    // above approach
    if ((n - 1) % 6 == 0) {
        cout << "Second Player wins the game";
    }
    else {
        cout << "First Player wins the game";
    }
}
 
// Driver function
int main()
{
 
    int n = 7;
    findWinner(n);
}

Java

// Java program to find the player
// who wins the game
class GFG
{
 
// Function to check the
// wining player
static void findWinner(int n)
{
    // As discussed in the
    // above approach
    if ((n - 1) % 6 == 0)
    {
        System.out.println("Second Player wins the game");
    }
    else
    {
        System.out.println("First Player wins the game");
    }
}
 
// Driver Code
public static void main(String[] args)
{
    int n = 7;
    findWinner(n);
}
}
 
// This code is contributed by Rajput-Ji

Python3

# Python3 program to find the player
# who wins the game
 
# Function to check the
# wining player
def findWinner(n):
     
    # As discussed in the
    # above approach
    if ((n - 1) % 6 == 0):
        print("Second Player wins the game");
    else:
        print("First Player wins the game");
     
# Driver Code
if __name__ == '__main__':
    n = 7;
    findWinner(n);
 
# This code is contributed by 29AjayKumar

C#

// C# program to find the player
// who wins the game
 
using System;
 
class GFG
{
     
    // Function to check the
    // wining player
    static void findWinner(int n)
    {
        // As discussed in the
        // above approach
        if ((n - 1) % 6 == 0)
        {
            Console.WriteLine("Second Player wins the game");
        }
        else
        {
            Console.WriteLine("First Player wins the game");
        }
    }
     
    // Driver Code
    public static void Main()
    {
        int n = 7;
        findWinner(n);
    }
}
 
// This code is contributed by AnkitRai01

Javascript

输出：

Second Player wins the game

时间复杂度：

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