# collect and extract numbers to/from number

4 views (last 30 days)
Majid Al-Sirafi on 9 Jan 2015
Commented: Majid Al-Sirafi on 13 Jan 2015
Hi everyone how to collect some numbers (ex: 10,23,14,17 ) to be one number for example be 200 (according to ciphering method)and how to extract these four numbers from 200 number (according to deciphering method)
regards
Geoff Hayes on 10 Jan 2015
Majid - please describe why are attempting this. Do you have algorithm already that will somehow map four (or more or less) numbers to a single number, which you will then decode back to the original four? Are your numbers always two digits, or can they be 1 or 5 or 342? What is the range of your input numbers - is it from 0 to 256?

Image Analyst on 10 Jan 2015
Try using inputdlg to get the 4 numbers. Call them a, b, c, and d. Then just do your algorithm, for example
a=10;
b=23;
c=14;
d=7;
% Encode by stitching together.
string = sprintf('%2.2d%2.2d%2.2d%2.2d', a,b,c,d)
number = str2double(string)
% Decode
aRecovered = int32(number/1e6)
bRecovered = mod(int32(number/1e4), 100)
cRecovered = mod(int32(number/1e2), 100)
dRecovered = mod(int32(number), 100)
In the command window:
string =
10231407
number =
10231407
aRecovered =
10
bRecovered =
23
cRecovered =
14
dRecovered =
7
Majid Al-Sirafi on 13 Jan 2015
Thanks dear image analyst till now, It is useful for me
best regards;
Majid

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