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Represent a number as sum of minimum possible psuedobinary numbers
• Difficulty Level : Medium
• Last Updated : 07 Aug, 2018

Given a number, you have to represent this number as sum of minimum number of possible psuedobinary numbers. A number is said to be psuedobinary number if its decimal number consists of only two digits (0 and 1). Example: 11,10,101 are all psuedobinary numbers.

Examples :-

```Input : 44
Output : 11 11 11 11

Explanation : 44 can be represented as sum of
minimum 4 psuedobinary numbers as 11+11+11+11

Input : 31
Output : 11 10 10

Explanation : 31 can be represented as sum of
minimum 3 psuedobinary numbers as 11+10+10
```

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

The idea to do this is to first observe carefully that we need to calculate minimum number of possible psuedobinary numbers. To do this we find a new number m such that if for a place in given number n, the digit is non-zero then the digit in that place in m is 1 otherwise zero. For example if n = 5102, then m will be 1101. Then we will print this number m and subtract m from n. We will keep repeating these steps until n is greater than zero.

## C++

 `// C++ program to represent a given ``// number as sum of minimum possible``// psuedobinary numbers``#include``using` `namespace` `std;`` ` `// function to represent a given ``// number as sum of minimum possible``// psuedobinary numbers``void` `psuedoBinary(``int` `n)``{``    ``// Repeat below steps until n > 0``    ``while` `(n > 0)``    ``{                 ``        ``// calculate m (A number that has same``        ``// number of digits as n, but has 1 in``        ``// place of non-zero digits 0 in place``        ``// of 0 digits)``        ``int` `temp = n, m = 0, p = 1;``        ``while` `(temp)``        ``{``            ``int` `rem = temp % 10;``            ``temp = temp / 10;`` ` `            ``if` `(rem != 0)``                ``m += p;``             ` `            ``p *= 10;``        ``}``         ` `        ``cout << m << ``" "``;`` ` `        ``// subtract m from n``        ``n = n - m;``    ``}``}`` ` `// Driver code``int` `main()``{``    ``int` `n = 31;`` ` `    ``psuedoBinary(n);`` ` `    ``return` `0;``}`

## Java

 `// Java program to represent a given``// number as sum of minimum possible``// psuedobinary numbers`` ` `import` `java.util.*;``import` `java.lang.*;`` ` `class` `GFG``{``    ``public` `static` `void` `psuedoBinary(``int` `n)``    ``{``        ``// Repeat below steps until n > 0``        ``while` `(n != ``0``)``        ``{``            ``// calculate m (A number that has same``            ``// number of digits as n, but has 1 in``            ``// place of non-zero digits 0 in place``            ``// of 0 digits)``            ``int` `temp = n, m = ``0``, p = ``1``;``            ``while``(temp != ``0``)``            ``{``                ``int` `rem = temp % ``10``;``                ``temp = temp / ``10``;`` ` `                ``if` `(rem != ``0``)``                    ``m += p;`` ` `                ``p *= ``10``;``            ``}`` ` `            ``System.out.print(m + ``" "``);``             ` `            ``// subtract m from n``            ``n = n - m;``        ``}``        ``System.out.println(``" "``);``    ``}`` ` `// Driver code``public` `static` `void` `main(String[] args)``    ``{``        ``int` `n = ``31``;``        ``psuedoBinary(n);``    ``}``}`` ` `// This code is contributed by Mohit Gupta_OMG`

## Python3

 `# Python3 program to represent ``# a given number as sum of ``# minimum possible psuedobinary ``# numbers`` ` `# function to represent a ``# given number as sum of``# minimum possible``# psuedobinary numbers``def` `psuedoBinary(n):``     ` `    ``# Repeat below steps``    ``# until n > 0``    ``while` `(n > ``0``):``         ` `        ``# calculate m (A number ``        ``# that has same number ``        ``# of digits as n, but ``        ``# has 1 in place of non-zero ``        ``# digits 0 in place of 0 digits)``        ``temp ``=` `n;``        ``m ``=` `0``;``        ``p ``=` `1``;``        ``while` `(temp):``            ``rem ``=` `temp ``%` `10``;``            ``temp ``=` `int``(temp ``/` `10``);``             ` `            ``if` `(rem !``=` `0``):``                ``m ``+``=` `p;``            ``p ``*``=` `10``;``         ` `        ``print``(m,end``=``" "``);``         ` `        ``# subtract m from n``        ``n ``=` `n ``-` `m;`` ` `# Driver code``n ``=` `31``;``psuedoBinary(n);`` ` `# This code is contributed``# by mits.`

## C#

 `// C# program to represent a given``// number as sum of minimum possible``// psuedobinary numbers`` ` `using` `System;`` ` `class` `GFG``{``    ``public` `static` `void` `psuedoBinary(``int` `n)``    ``{``        ``// Repeat below steps until n > 0``        ``while` `(n != 0)``        ``{``            ``// calculate m (A number that has same``            ``// number of digits as n, but has 1 in``            ``// place of non-zero digits 0 in place``            ``// of 0 digits)``            ``int` `temp = n, m = 0, p = 1;``            ``while``(temp != 0)``            ``{``                ``int` `rem = temp % 10;``                ``temp = temp / 10;`` ` `                ``if` `(rem != 0)``                    ``m += p;`` ` `                ``p *= 10;``            ``}`` ` `            ``Console.Write(m + ``" "``);``             ` `            ``// subtract m from n``            ``n = n - m;``        ``}``        ``Console.Write(``" "``);``    ``}`` ` `// Driver code``public` `static` `void` `Main()``    ``{``        ``int` `n = 31;``        ``psuedoBinary(n);``    ``}``}`` ` `// This code is contributed by nitin mittal`

## PHP

 ` 0``    ``while` `(``\$n` `> 0)``    ``{                 ``        ``// calculate m (A number ``        ``// that has same number of ``        ``// digits as n, but has 1 ``        ``// in place of non-zero ``        ``// digits 0 in place of 0 ``        ``// digits)``        ``\$temp` `= ``\$n``; ``\$m` `= 0; ``\$p` `= 1;``        ``while` `(``\$temp``)``        ``{``            ``\$rem` `= ``\$temp` `% 10;``            ``\$temp` `= ``\$temp` `/ 10;`` ` `            ``if` `(``\$rem` `!= 0)``                ``\$m` `+= ``\$p``;``             ` `            ``\$p` `*= 10;``        ``}``         ` `        ``echo` `\$m` `, ``" "``;`` ` `        ``// subtract m from n``        ``\$n` `= ``\$n` `- ``\$m``;``    ``}``}`` ` `// Driver code``\$n` `= 31;``psuedoBinary(``\$n``);`` ` `// This code is contributed``// by nitin mittal.``?>`

Output :

```11 10 10
```

Time Complexity : O( log n )
Auxiliary Space : O(1)

This article is contributed by Harsh Agarwal. If you like GeeksforGeeks and would like to contribute, you can also write an article using contribute.geeksforgeeks.org or mail your article to contribute@geeksforgeeks.org. See your article appearing on the GeeksforGeeks main page and help other Geeks.

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