enter a string of characters and numbers, add and return the sum of the numbers in matlab, for example: 'there are two blue birds and 4 red birds on the branch'--> return 6

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Phung Khai
Phung Khai 2021-9-3
评论： Walter Roberson 2021-9-3
please help me solve this problem: enter a string of characters and numbers, add and return the sum of the numbers in matlab, for example: 'there are two blue birds and 4 red birds on the branch'--> return 6
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Walter Roberson
Walter Roberson 2021-9-3
Which names of numbers need to be handled? For example does it need to be able to handle,
there are seventeen thousand million three hundred and sixty two thousand five hundred and nine red birds
Phung Khai
Phung Khai 2021-9-3
I'm sorry to have entered the wrong topic, the correct topic is: " 2 blue birds and 4 red birds " --> output = 6. need to handle numeric types, like the above example :2 and 4

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Konrad
Konrad 2021-9-3
Hi
if you only need to handle numeric type, I'd recommend regular expressions:
strng = ' 2 blue birds and 4 red birds';
res_str = regexp(strng,'\d+(\.\d+)?','match');
res_num = str2double(res_str);
res_sum = sum(res_num);
If you also want to handle written numbers as in your initial example
'there are two blue birds and 4 red birds on the branch'
this FEX might by of great help.
Best, Konrad
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