[华为机试题]最大连续递增子串

芳华9172

#include <iostream>
#include <string>
#include <vector>
using namespace std;
int main()
{
string s;
string::size_type  length(0);
cin>>s;
string::size_type num = s.size();
vector<char> ss, ss1;
ss.clear();
ss1.clear();

for (string::size_type i = 0; i != num-1; i++)
{
if (s.at(i+1) > s.at(i))
{
if (i == num - 2)
{
cout<<s;
return 0;
}
}
else
break;
}
/*for (string::size_type i = 0; i != num - 1; i++)
{
if (s.at(0) == s.at(i))
{
if (i == num -2)
{
cout<<(s.at(0));
return 0;
}
}
else
break;
}*/

for (string::size_type i = 0; i != num-1; i++)
{   
if (s.at(i+1) > s.at(i))
{
if (ss.empty())
{
ss.push_back(s.at(i));
}
ss.push_back(s.at(i+1));
}
else
{
if (ss.size() > length)
{
length = ss.size();
ss1 = ss;
}
else if (ss.size() == length)
{
if (ss > ss1)
{
ss1 = ss;
}
}
ss.clear();
}
if (i == num -2)
{
if (ss.size() > length)
{
length = ss.size();
ss1 = ss;
}
else if (ss.size() == length)
{
if (ss > ss1)
{
ss1 = ss;
}
}
}

}
for (vector<char>::iterator iter =ss1.begin() ; iter != ss1.end(); iter++)
{
cout<<(*iter);
}
return 0;
}