How to find Index positions with a vector STL?

Hello,

vector <int>my_array

my_array is 32 in size.

The contents of my_array is:
11110000011111110000011111….111


I want to know the 4 index positions of '0'.


How do I do it?


Thanks,
codeguy

Quote:

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I want to know the 4 index positions of '0'.

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What do you mean by the "4 index positions of '0'"?

I meant the four in color:

11110000011111110000011111….111


-codeguy

Iterate through the vector. When the number changes from 1 to 0 or from 0 to 1, make a note.

I guess you'll have to loop over the entire vector, keep a count of (consequtive?) 0-s and then decide whether a particular 0 is the one that you are interested in.

There's also the std::find() function in the <algorithm> header, but then you'll have to convert the iterator it returns to an index (try the std::distance() function in <iterator>).

Quote:

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Originally Posted by codeguy

I meant the four in color:

11110000011111110000011111….111

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Er okay, cause there's no way we could have guessed that from the previous post!

Do you mean that each integer in the vector holds a single 1 or 0, or do you mean to treat this as some kind of bitset where each int holds 32 1's or 0's?