构造一个由前N个自然数组成的数组，以使每个相邻对都是互素的

给定一个正整数N ，任务是构造一个由前N个自然数组成的数组，以使该数组中的每对相邻元素都是互质数。如果存在多个解决方案，则打印其中任何一种。

例子：

Input: N = 4 
Output: 4 1 3 2 
Explanation: 
All possible adjacent pairs of the array are { (4, 1), (1, 3), (3, 2) } 
Since all adjacent pairs of the array are co-prime, the required output is 4 1 3 2.

Input: N = 7 
Output: 3 4 5 7 6 1 2

方法：我们的想法是迭代范围[1，N]使用变量i和打印i的值。以下是观察结果：

GCD(i, i + 1) = 1 
Therefore, for all possible value of i the pair (i, i + 1) are coprime numbers. 
 

下面是上述方法的实现：

C++

// C++ program to implement
// the above approach
 
#include 
using namespace std;
 
// Function to construct an arrary with
// adjacent elements as co-prime numbers
void ConstArrayAdjacentCoprime(int N)
{
    // Iterate over the range [1, N]
    for (int i = 1; i <= N; i++) {
 
        // Print i
        cout << i << " ";
    }
}
 
// Driver Code
int main()
{
    int N = 6;
 
    ConstArrayAdjacentCoprime(N);
    return 0;
}

Java

// Java program to implement
// the above approach
class GFG
{
 
    // Function to construct an arrary with
    // adjacent elements as co-prime numbers
    static void ConstArrayAdjacentCoprime(int N)
    {
        // Iterate over the range [1, N]
        for (int i = 1; i <= N; i++)
        {
     
            // Print i
            System.out.print(i + " ");
        }
    }
 
    // Driver Code
    public static void main (String[] args)
    {
      int N = 6;
      ConstArrayAdjacentCoprime(N);
    }
}
 
// This code is contributed by AnkitRai01

Python3

# Python3 program to implement
# the above approach
 
# Function to construct an arrary with
# adjacent elements as co-prime numbers
def ConstArrayAdjacentCoprime(N):
 
    # Iterate over the range [1, N]
    for i in range(1, N + 1):
       
        # Print i
        print(i, end = " ")
 
# Driver Code
if __name__ == "__main__" :
 
    N = 6
 
    ConstArrayAdjacentCoprime(N)
 
# This code is contributed by AnkitRai01

C#

// C# program to implement
// the above approach 
using System;
 
class GFG{
  
// Function to construct an arrary with
// adjacent elements as co-prime numbers
static void ConstArrayAdjacentCoprime(int N)
{
     
    // Iterate over the range [1, N]
    for(int i = 1; i <= N; i++)
    {
         
        // Print i
        Console.Write(i + " ");
    }
}
 
// Driver Code
public static void Main ()
{
    int N = 6;
     
    ConstArrayAdjacentCoprime(N);
}
}
 
// This code is contributed by susmitakundugoaldanga

输出：

1 2 3 4 5 6

时间复杂度： O(N)
辅助空间： O(1)