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Phone_Directory
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Phone_Directory
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vector<vector<string>> displayContacts(int n, string contact[], string s)
{
vector<vector<string> > vec;
set<string> st;
string search_str;
search_str = s.substr(0,1);
for(int j=0; j<n; ++j)
{
if(contact[j].substr(0,1) == search_str)
{
st.insert(contact[j]);
}
}
vector<string> temp;
if(!st.empty())
{
for(auto it: st)
{
temp.push_back(it);
}
vec.push_back(temp);
}
else
{
temp.push_back("0");
for(int d = 0; d<s.size(); ++d)
{
vec.push_back(temp);
}
return vec;
}
for(int i=1; i<s.size(); ++i)
{
temp.clear();
search_str = s.substr(0, i+1);
for(int j = 0; j<vec[i-1].size(); ++j)
{
if(vec[i-1][j].substr(0,i+1) == search_str)
{
temp.push_back(vec[i-1][j]);
}
}
if(temp.size() == 0)
{
temp.push_back("0");
while(i<s.size())
{
vec.push_back(temp);
i++;
}
return vec;
}
else
vec.push_back(temp);
}
return vec;
}