How do I increment a 4-digit number in a character array?

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Brad
Brad 2017-2-22
回答： Walter Roberson 2017-2-23
I've got a 1x4 character array containing a 4-digit number.
IRN = '0050';
I'm looking for a way to increment this number in a for loop. For example, with 3 iterations the output of the for loop would be as follows;
MRN =
0051
0052
0053
Can MATLAB increment numbers, within a character array, in a for loop?

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采纳的回答

Star Strider
Star Strider 2017-2-22
I’m not quite sure what you want.
One approach:
IRN = '0050';
IRN0 = IRN;
for k1 = 1:3
IRN = sprintf('%04d', str2num(IRN0)+k1)
end
  2 个评论
Stephen23
Stephen23 2017-2-22
编辑：Stephen23 2017-2-22
str2double would be faster and more robust then str2num. sscanf would be best:
IRN = '0098'
for k = 1:5
IRN = sprintf('%04d',1+sscanf(IRN,'%d'))
end

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更多回答（1 个）

Walter Roberson
Walter Roberson 2017-2-23
IRN = '0098';
L = length(IRN);
for k = 1 : 5
for J = L : -1 : 1;
if IRN(J) == '9'
IRN(J) = '0';
else
IRN(J) = IRN(J)+1;
break;
end
end
disp(IRN)
end

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