finding indices in a string

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

Answer 1

[KSSV]

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

[may gor]

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

[KSSV]

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

Answer 2

[Adam]

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.