How can i solve this array question?

write a program that asks the user to enter integer numbers and store the numbers in a two dimensional array, then replace any 9 digit by 0 digit. After that Change the numbers that are in odd row positions by the even row positions.

[Thomas Nguyen]

This is very unclear + no example of any sort => can't help unless you be more specific

Answer 1

[Walter Roberson]

The easiest way to replace 9 digits with 0 digits is to int2str() the number, store the result, use logical indexing to find the '9' characters, store '0' characters instead, then str2double() the string after replacement.

Example:

t = sprintf('%d', A_Number);
t(t == '7') = '8';
str2double(t)

[Emma Swaggy]

Thanks for your reply but I still don't know how to solve it because I don't have any background about it . So if you know how to do it , i will appreciate .

[Walter Roberson]

I just showed you how to do it with the example of replacing 7 with 8. You can make the obvious changes.

[Walter Roberson]

temp = arrayfun(@(x) sprintf('%d', x), YourArray, 'uniform', 0);

now you can proceed through the entries in the cell array temp making the substitutions, producing a new cell array. Then you can str2double() the new cell array to get back to a numeric array.