I would like to create an array to store a password, website combo.

I would like to write a function to enter strings of passwords and websites with each new entrie going to the next line of the array. However I am finding that the script I have now is overwriting the previous entries.

function passwordArray = addPasswordWithWebsite(passwordArray, password, website)
% Check if the passwordArray variable exists

% Add the website and password pair to the array
passwordArray{1, end+1} = website;
passwordArray{2, end+1} = password;
end

This is the code I have thus far. Also do I have to index the array in the main script each time, as when I try to run it after closing Matlab it says passwordArray variable is undefined.

[Voss]

Notice that the code as shown adds two columns to passwordArray:

website = 'google.com';
password = 'PasSwOrD';

% let's say initially passwordArray has 0 columns:
passwordArray = cell(2,0);

% this adds a new column:
passwordArray{1, end+1} = website;

% and this adds another new column:
passwordArray{2, end+1} = password;

% so now there are two columns, one with the website and one with the
% corresponding password:
passwordArray

passwordArray = 2×2 cell array
    {'google.com'}    {0×0 double}
    {0×0 double  }    {'PasSwOrD'}

You can change the second end+1 to end:

% let's say initially passwordArray has 0 columns:
passwordArray = cell(2,0);

% this adds a new column containing the website:
passwordArray{1, end+1} = website;

% and this fills in the 2nd row in the last column with the password:
passwordArray{2, end} = password;

% so now there is one column:
passwordArray

passwordArray = 2×1 cell array
    {'google.com'}
    {'PasSwOrD'  }

Or add both the website and the password to the array at the same time:

% let's say initially passwordArray has 0 columns:
passwordArray = cell(2,0);

% this adds a new column containing both website and password:
passwordArray(:, end+1) = {website; password};

% so now there is one column:
passwordArray

passwordArray = 2×1 cell array
    {'google.com'}
    {'PasSwOrD'  }

Answer 1

[Chunru]

Use string array instead of cell array for efficiency. You can also considre to use table.

pa = ["abc", "def"]

pa = 1×2 string array
    "abc"    "def"

pa = addPasswordWithWebsite(pa, "123", "456")

pa = 2×2 string array
    "abc"    "def"
    "123"    "456"

function passwordArray = addPasswordWithWebsite(passwordArray, website, password)
% Check if the passwordArray variable exists
% Add the website and password pair to the array
passwordArray(end+1, :) = [website,  password];
end