# Program to print Collatz Sequence

Starting with any positive integer N, Collatz sequence is defined corresponding to n as the numbers formed by the following operations :

1. If n is even, then n = n / 2.
2. If n is odd, then n = 3*n + 1.
3. Repeat above steps, until it becomes 1.

Examples :

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

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

## Recommended: Please try your approach on {IDE} first, before moving on to the solution.

Below is the implementation :

## 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) `

## PHP

 ` `

Output

```6 3 10 5 16 8 4 2 1
```

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