程序打印Collatz序列

以任何正整数N开头，将对应于n的Collatz序列定义为以下操作形成的数字：

1. 如果n为偶数，则n = n / 2。
2. 如果n为奇数，则n = 3 * n + 1。
3. 重复上述步骤，直到变为1。

例子 ：

Input : 3
Output : 3, 10, 5, 16, 8, 4, 2, 1       

Input : 6
Output : 6, 3, 10, 5, 16, 8, 4, 2, 1

下面是实现：

C++

// CPP program to print Collatz sequence
#include 
using namespace std;
 
void printCollatz(int n)
{
    // We simply follow steps
    // while we do not reach 1
    while (n != 1)
    {
        cout << n << " ";
 
        // If n is odd
        if (n & 1)
            n = 3*n + 1;
 
        // If even
        else
            n = n/2;
    }
 
    // Print 1 at the end
    cout << n;
}
 
// Driver code
int main()
{
    printCollatz(6);
    return 0;
}

Java

// Java program to print
// Collatz sequence
import java.io.*;
 
class GFG
{
    static void printCollatz(int n)
    {
        // We simply follow steps
        // while we do not reach 1
        while (n != 1)
        {
            System.out.print(n + " ");
     
            // If n is odd
            if ((n & 1) == 1)
                n = 3 * n + 1;
     
            // If even
            else
                n = n / 2;
        }
     
        // Print 1 at the end
        System.out.print(n);
    }
     
    // Driver code
    public static void main (String[] args)
    {
        printCollatz(6);
    }
}
 
// This code is contributed
// by akt_mit

Python3

# Python 3 program to print
# Collatz sequence
 
def printCollatz(n):
     
    # We simply follow steps
    # while we do not reach 1
    while n != 1:
        print(n, end = ' ')
 
        # If n is odd
        if n & 1:
            n = 3 * n + 1
 
        # If even
        else:
            n = n // 2
 
    # Print 1 at the end
    print(n)
 
# Driver code
printCollatz(6)
 
# This code is contributed
# by vaibhav29498

C#

// C# program to print Collatz sequence
using System;
 
class GFG {
     
    static void printCollatz(int n)
    {
        // We simply follow steps
        // while we do not reach 1
        while (n != 1)
        {
            Console.Write (n + " ");
     
            // If n is odd
            if ((n & 1) == 1)
                n = 3 * n + 1;
     
            // If even
            else
                n = n / 2;
        }
     
        // Print 1 at the end
        Console.Write (n);
    }
     
    // Driver code
    static void Main()
    {
        printCollatz(6);
    }
}
 
// This code is contributed by
// Manish Shaw (manishshaw1)

Javascript

 
    // Javascript program to print Collatz sequence
     
    function printCollatz(n)
    {
        // We simply follow steps
        // while we do not reach 1
        while (n != 1)
        {
            document.write(n + " ");
 
            // If n is odd
            if ((n & 1) != 0)
                n = 3*n + 1;
 
            // If even
            else
                n = parseInt(n/2, 10);
        }
 
        // Print 1 at the end
        document.write(n);
    }
 
    printCollatz(6);
 
 

输出

6 3 10 5 16 8 4 2 1