[Challenge] numbers manipulation

Question

The challenge is to create a function which will take one INTEGER parameter (greater than 0).

It will return the integer with its figures sorted.

Example : 2017 -> 127
1996 -> 1699

The more optimized, the better :)

Answer 1

https://code.sololearn.com/c5ftD2L8Yz6U/?ref=app

Rather easy in python. Haha 😅

Answer 2

https://code.sololearn.com/W87Feb0YCo3f/?ref=app

Answer 3

@yuri he wants answer without collections like arrays, sets etc.

Answer 4

@Baptiste : Slightly modified it.

Answer 5

//without array or built in functions or collections

import java.util.Scanner;
public class Program
{
public static void main(String[] args) throws Exception {
Scanner sc = new Scanner(System.in);
int number = sc.nextInt();
for(int i=1;i<10;i++){
int counter=0, num=number;
while(num>0){
if(num % 10 == i)
counter++;
num/=10;
}
while(counter>0){
System.out.print(i);
counter--;
}
}

}
}

Answer 6

It is a great start for a Kaprekar number procedure, my first project here on Sololearn:

https://code.sololearn.com/cRqDeh0LFCLy/?ref=app

Answer 7

Actually Baptiste algorithm works and number you choose has datatype long for java so please check the algo only and yes this algo is not language dependent except datatype range (this algo will work same for C ++, java, C# or JavaScript)

Answer 8

Yeah. I just wanted to post it before anyone else 😂
Wrote what first came to find

Answer 9

Added another method. Could be faster than the first one since inbuilt sort function takes up more time.

Answer 10

#Ruby
def smallest(num)
num.to_s.chars.sort.join.to_i
end
puts smallest(2017) #Output: 127
puts smallest(1996) #Output: 1699

Answer 11

Nice @Krishina but ... come on ... You can do more optimized than that, I am sure of it ! :) Same for you Pixie ;)

Answer 12

It's actually easy

Answer 13

https://code.sololearn.com/cuQHrC6GjCN9/?ref=app

Just made a more optimised solution in Ruby 😄

Answer 14

@Pixie easy but not optimized at all :p

Answer 15

I can understand, my first solution was the same 😂

Answer 16

I marked the quickest one as Best as nobody had a solution without containers. Congratulations to all who found an answer to this problem ! :)

My answer was :
https://code.sololearn.com/coTvuhU2EXZU/?ref=app

Answer 17

Here you go. Checks for valid input.
https://code.sololearn.com/cDNc81dlY1S5/?ref=app

Answer 18

You can do it only with number manipulation, not array :)
But still, I think you both have the shortest solutions in your languages ^^

Answer 19

@$Vengat, then show it to us :p

Answer 20

Hi, for very long numbers the below should be faster.
https://code.sololearn.com/cKKmT395hhef/?ref=app