Elements into a String

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Dan Lynn
Dan Lynn 2015-10-12
评论： Stephen23 2015-10-12
I have a two cell arrays, one consisting of food items to eat and another of what not to eat.
For example: C = {'ham', 'cheese', 'bread'} <--- food to eat and D = {'milk', 'apples', 'cherry'}
I need to put the items from both cell arrays into a string that is formatted like this:
'I can eat ham, cheese and/or bread, but do not eat milk, apples or cherry'
The number of elements in the cell arrays will not always be three; it is not consistent.
I am having trouble separating elements with commas and the last two items with an 'and/or' and 'or.'
There should not be a comma before the 'and/or' or the 'or.'
Also if there are only two items in a cell array then the output string should look lik this: 'I can eat ham and/or cheese, but do not eat milk or apples'
where there are no commas.

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采纳的回答

Walter Roberson
Walter Roberson 2015-10-12
['I can eat ', strjoin(C(1:end-1), {', '}), ' and/or ', C{end}, ' but do not eat' .....]
You will need to modify this, however, for the case where there is only one item in the cell array.
  1 个评论
Stephen23
Stephen23 2015-10-12
This code is only a partial solution. See my answer for a complete working solution.

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更多回答（1 个）

Stephen23
Stephen23 2015-10-12
编辑：Stephen23 2015-10-12
C = {'ham', 'cheese', 'bread'};
D = {'milk', 'apples', 'cherries'};
X(2,:) = C;
Y(2,:) = D;
X(1,:) = {', '};
Y(1,:) = {', '};
X{1,end} = ' and/or ';
Y{1,end} = ' or ';
fmt = 'I can eat %s, but do not eat %s.';
out = sprintf(fmt,[X{2:end}],[Y{2:end}])
displays this in the command window:
out = I can eat ham, cheese and/or bread, but do not eat milk, apples or cherries.
And we can change the input arguments to check that it deals with the 'and/or' correctly:
D = {'cherries'};
... run the code again to produce this:
out = I can eat ham, cheese and/or bread, but do not eat cherries.
C = {'ham', 'cheese'};
... run the code again to produce this:
out = I can eat ham and/or cheese, but do not eat cherries.
C = {'ham'};
... run the code again to produce this:
out = I can eat ham, but do not eat cherries.
And it also expands nicely for longer lists too:
C = {'ham', 'cheese', 'bread', 'antelope', 'tofu', 'kimchi'};
D = {'apples'};
... run the code again to produce this:
out = I can eat ham, cheese, bread, antelope, tofu and/or kimchi, but do not eat apples.
  2 个评论
Stephen23
Stephen23 2015-10-12
My pleasure. You can also vote for answers that are useful for you.

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