Find cells that start with text and combine it with next cell

I have a cell array like:

{'Test1'}

{'10v'}

{'20va'}

{'30v'}

{'50v'}

{'65v'}

{'Test2'}

{'80v}

{100v}

I want to find cells that start with text and combine that with next cell and store in same variable. Output should be something like:

{'Test1 10v'}

{'20va'}

{'30v'}

{'50v'}

{'65v'}

{'Test2 80v'}

{100v}

Answer 1

[Stephen23]

>> C = {'Test1';'10v';'20va';'30v';'50v';'65v';'Test2';'80v';'100v'}
C = 
    'Test1'
    '10v'
    '20va'
    '30v'
    '50v'
    '65v'
    'Test2'
    '80v'
    '100v'
>> X = cellfun('isempty',regexp(C(:),'^\D','once'));
>> Y = cumsum([1;X(1:end-1)]);
>> F = @(x){sprintf(' %s',C{x})};
>> Z = strtrim(accumarray(Y,(1:numel(C)).',[],F))
Z = 
    'Test1 10v'
    '20va'
    '30v'
    '50v'
    '65v'
    'Test2 80v'
    '100v'

[David Hill]

Very nice!

[Stephen23]

@David Hill: thank you! It can be simplified with strjoin:

>> Z = accumarray(Y,(1:numel(C)).',[],@(x){strjoin(C(x))})
Z = 
    'Test1 10v'
    '20va'
    '30v'
    '50v'
    '65v'
    'Test2 80v'
    '100v'

Answer 2

[David Hill]

Cell array (C), combined cell array (c).

i=1;
j=1;
while i<=size(C,2)
    a=cell2mat(C{i})-57;
    if a(1)>0
        c{j}=[cell2mat(C{i}),' ',cell2mat(C{i+1})];
        i=i+2;
    else
        c{j}=C{i};
        i=i+1;
    end 
    j=j+1;
end