Related Articles
Sort 3 numbers
• Difficulty Level : Hard
• Last Updated : 02 Jul, 2020

Given three numbers, how to sort them?

Examples:

```Input  : arr[] = {3, 2, 1}
Output : arr[] = {1, 2, 3}

Input : arr[] = {6, 5, 0}
Output :arr[] = {0, 5, 6}
```

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

One simple solution is to use sort function.

## C++

 `// C++ program to sort an array of size 3``#include ``#include ``using` `namespace` `std;`` ` `int` `main()``{ ``    ``int` `a[] = {10, 12, 5};`` ` `    ``sort(a, a + 3);`` ` `    ``for` `(``int` `i = 0; i < 3; i++) ``        ``cout << a[i] << ``" "``;`` ` `    ``return` `0;``}`

## Java

 `// Java program to sort``// an array of size 3``import` `java.io.*;``import` `java .util.*;`` ` `class` `GFG ``{``    ``public` `static` `void` `main (String[] args)``    ``{``        ``int` `a[] = {``10``, ``12``, ``5``};`` ` `        ``Arrays.sort(a);`` ` `        ``for` `(``int` `i = ``0``; i < ``3``; i++) ``            ``System.out.print( a[i] + ``" "``);``    ``}``}`` ` `// This code is contributed``// by inder_verma.`

## Python3

 `# Python3 program to sort``# an array of size 3``a ``=` `[``10``, ``12``, ``5``]``a.sort()``for` `i ``in` `range``(``len``(a)):``    ``print``(a[i], end ``=` `' '``)`` ` `# This code is contributed``# by Samyukta S Hegde`

## C#

 `// C# program to sort``// an array of size 3``using` `System;``class` `GFG ``{``    ``public` `static` `void` `Main ()``    ``{``        ``int` `[]a = {10, 12, 5};`` ` `        ``Array.Sort(a);`` ` `        ``for` `(``int` `i = 0; i < 3; i++) ``         ``Console.Write( a[i] + ``" "``);``    ``}``}`` ` `// This code is contributed ``// by chandan_jnu.`

## PHP

 ``
Output:
```5 10 12
```

How to write our own sort function that does minimum comparison and does not use extra variables?

The idea is to use insertion sort as insertion sort works best for small arrays.

## C++

 `// C++ program to sort an array of size 3``#include ``#include ``using` `namespace` `std;`` ` `int` `sort3(``int` `arr[])``{``    ``// Insert arr[1]``    ``if` `(arr[1] < arr[0])``       ``swap(arr[0], arr[1]);`` ` `    ``// Insert arr[2]``    ``if` `(arr[2] < arr[1])``    ``{``       ``swap(arr[1], arr[2]);``       ``if` `(arr[1] < arr[0])``          ``swap(arr[1], arr[0]);``    ``}``}`` ` `int` `main()``{ ``    ``int` `a[] = {10, 12, 5};``     ` `    ``sort3(a);`` ` `    ``for` `(``int` `i = 0; i < 3; i++) ``        ``cout << a[i] << ``" "``;`` ` `    ``return` `0;``}`

## Java

 `// Java program to sort ``// an array of size 3``import` `java.io.*;``import` `java.util.*;`` ` `class` `GFG``{``static` `void` `sort3(``int` `arr[],``                  ``int` `temp[])``{``    ``// Insert arr[1]``    ``if` `(arr[``1``] < arr[``0``])``        ``{``            ``temp[``0``] = arr[``0``];``            ``arr[``0``] = arr[``1``];``            ``arr[``1``] = temp[``0``];``        ``}`` ` `    ``// Insert arr[2]``    ``if` `(arr[``2``] < arr[``1``])``    ``{``            ``temp[``0``] = arr[``1``];``            ``arr[``1``] = arr[``2``];``            ``arr[``2``] = temp[``0``];``             ` `    ``if` `(arr[``1``] < arr[``0``])``        ``{``            ``temp[``0``] = arr[``0``];``            ``arr[``0``] = arr[``1``];``            ``arr[``1``] = temp[``0``];``        ``}``    ``}``}`` ` `// Driver Code``public` `static` `void` `main(String args[])``{ ``    ``int` `a[] = ``new` `int``[]{``10``, ``12``, ``5``};``    ``int` `temp1[] = ``new` `int``[``10``];``    ``sort3(a, temp1);`` ` `    ``for` `(``int` `i = ``0``; i < ``3``; i++) ``        ``System.out.print( a[i] + ``" "``);``}``}`` ` `// This code is contributed``// by Akanksha Rai(Abby_akku)`

## Python3

 `# Python3 program to sort an array of size 3``def` `sort3(arr):``     ` `    ``# Insert arr[1]``    ``if` `(arr[``1``] < arr[``0``]):``        ``arr[``0``], arr[``1``] ``=` `arr[``1``], arr[``0``]``         ` `    ``# Insert arr[2]``    ``if` `(arr[``2``] < arr[``1``]):``        ``arr[``1``], arr[``2``] ``=` `arr[``2``], arr[``1``]``        ``if` `(arr[``1``] < arr[``0``]):``            ``arr[``1``], arr[``0``] ``=` `arr[``0``], arr[``1``]``     ` `# Driver code``a ``=` `[``10``, ``12``, ``5``]`` ` `sort3(a)`` ` `for` `i ``in` `range``(``3``):``    ``print``(a[i],end``=``" "``)``     ` `# This code is contributed by shubhamsingh10`

## C#

 `// C# program to sort ``// an array of size 3``using` `System;`` ` `class` `GFG {``     ` `static` `void` `sort3(``int` `[]arr, ``int` `[]temp)``{``     ` `    ``// Insert arr[1]``    ``if` `(arr[1] < arr[0])``        ``{``            ``temp[0] = arr[0];``            ``arr[0] = arr[1];``            ``arr[1] = temp[0];``        ``}`` ` `    ``// Insert arr[2]``    ``if` `(arr[2] < arr[1])``    ``{``        ``temp[0] = arr[1];``        ``arr[1] = arr[2];``        ``arr[2] = temp[0];``             ` `        ``if` `(arr[1] < arr[0])``        ``{``            ``temp[0] = arr[0];``            ``arr[0] = arr[1];``            ``arr[1] = temp[0];``        ``}``    ``}``}`` ` `    ``// Driver Code``    ``public` `static` `void` `Main(String []args)``    ``{ ``        ``int` `[]a= ``new` `int``[]{10, 12, 5};``        ``int` `[]temp1 = ``new` `int``[10];``        ``sort3(a, temp1);``     ` `        ``for` `(``int` `i = 0; i < 3; i++) ``            ``Console.Write( a[i] + ``" "``);``    ``}``}`` ` `// This code is contributed``// by Akanksha Rai(Abby_akku)`

## PHP

 ``
Output:
```5 10 12
```

Attention reader! Don’t stop learning now. Get hold of all the important DSA concepts with the DSA Self Paced Course at a student-friendly price and become industry ready.

My Personal Notes arrow_drop_up