aarthi28@gmail.com wrote:
Quote:
Hi,
I am trying to compare 2 vectors of different sizes, and if the same
element exists in both, I want to replace them by the text "aa". I
thought this would work, but it replaces the entire array with just
"aa". I'm not sure how else to do what I want to do
>
>
for (unsigned int i=0; i<a_word_list.size(); i++)
{
for (unsigned int j=0; j<n_word_list.size();j++)
{
if (a_word_list[i].compare( n_word_list[j]))
{
a_word_list.assign(1,"aa");
>
n_word_list.assign(1,"aa");
>
}
}
}
>
That's what assign does, it assigns the whole array. Also you are using
compare wrongly, compare returns 0 (i.e. false) if two items compare
equal. But you don't need compare, just use ==.
This looks more like it
for (unsigned int i=0; i<a_word_list.size(); i++)
{
bool replaced = false;
for (unsigned int j=0; j<n_word_list.size();j++)
{
if (a_word_list[i] == n_word_list[j])
{
n_word_list[j] = "aa";
replaced = true;
}
}
if (replaced)
n_word_list[i] = "aa";
}
I guess the trick is using the 'replaced' variable to track of if you've
made any changes to n_word_list, so at the end of the loop you know
whether to make the same change to a_word_list.
john
