Breaking a Number into 1000s, 100, 50, 10, 5,1

Hello Everyone. I am trying to figure out a way to automatically break a given number into sums of 1000, 500, 100, 50, 10, 5 and 1. For example given 1994, I want to break it into 1000 + 500 + 100 + 100 + 100 + 100 +50+ 10 + 10 + 10 +10 + 4. Or given 75 it would be 50 + 10 + 10 + 5. I would appreciate any insight on how to do this. I am trying to use this to create a function that converts a given value into Roman numerals.

[DGM]

There are a number of user-submitted tools on the File Exchange that can do conversion between various number systems. You could look at a few and see what approaches the various authors use.

https://www.mathworks.com/matlabcentral/fileexchange?q=roman+numerals

[Ntandoyakhe Tshuma]

Thank you I will have a look at them.

Answer 1

[Ntandoyakhe Tshuma]

**I figured it out, my solution was big in size but it worked.

Answer 2

[Jan]

This sounds like a homework question. So please show us, what you have tried so far and ask a specific question concerning Matlab.

n    = 1994;
pool = [1000, 500, 100, 50, 10, 5, 1];
v    = zeros(size(pool));
for k = 1:numel(pool)
   v(k) = ?  % How many multiples of pool(k) are matching into n?
   n    = ?  % Reduce n by number of found multiples
end

[Ntandoyakhe Tshuma]

I am working on a matlab cody problem. I have linked it here below. I am trying to create a function that converts a given number into roman numerals. I first created a function that converts roman numerals to digit form (see sample of my code below) . What l am working on is the reverse of that. It is not a homework problem l am just trying to advance my matlab skill by practicising.

https://www.mathworks.com/matlabcentral/cody/groups/2/problems/63

I=1;
V=5;
X=10;
L=50;
C=100;
D=500;
M=1000;
 
%% make an array rnum 
N=4;
rnum=zeros(1,N);
 
 
%% Initialize sumations 
sum1=0;
sum2=0;
%% Ask the user to input their roman numeral
 
for ix=1:N
    rnum(ix)=input(['Enter value ',num2str(ix),' of your roman numeral: '],'s');
    if rnum(ix)=='I'
        rnum(ix)=1;
    elseif rnum(ix)=='V'
        rnum(ix)=5;
    elseif rnum(ix)=='X'
        rnum(ix)=10;
    elseif rnum(ix)=='L'
        rnum(ix)=50;
    elseif rnum(ix)=='C'
        rnum(ix)=100;
    elseif rnum(ix)=='D'
        rnum(ix)=500;
    elseif rnum(ix)=='M'
        rnum(ix)=1000;
    else
        disp('Please Follow The Guide')
        break
    end   
    
end
 
disp(num2str(rnum))
 
%% Compute the morden numerical value 
 
if rnum(1)>rnum(2)
    sum1=rnum(1)+rnum(2);
elseif rnum(1)==rnum(2)
     sum1=rnum(1)+rnum(2);
elseif rnum(1)<rnum(2)
    sum1=rnum(2)-rnum(1);
end
    
if rnum(3)>rnum(4)
    sum2=rnum(3)+rnum(4);
elseif rnum(3)==rnum(4)
     sum1=rnum(1)+rnum(2);
elseif rnum(3)<rnum(4)
    sum2=rnum(4)-rnum(3);
    
end
 
disp(['Your value in morden numbers is',num2str(sum1+sum2)])