finding indices in a string

Question

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how can i find the indices of the leading zeros in this string: '123 0009 90'

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Answer 1

KSSV 2016-12-16

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str = '123 0009 90' ;
idx = findstr(str,'0')

may gor 2016-12-16

i need only the indices of '000' before the '9'(not the zero after the 9 in '90')

KSSV 2016-12-16

It gives all the indices.....you can pick the first three, that's what you wanted..

Answer 2

Adam 2016-12-16

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idx = strfind( str, ' 0' );

will find you the start of each leading 0. Then you can count the zeros after each of those before a 'proper' number.

strsplit( str, ' ' );

will divide up your string into each component also, but getting the indices from that would be a tedious process so probably not too helpful.