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List<string> list = new List<string>();
list.Add("192.168.2.0");
list.Add("192.168.2.0");
list.Add("192.168.2.0");
string s = list[0];
int index = s.Length;
for (int i = 1; i < list.Count; i++)
{
for (int j = 0; j < s.Length; j++)
{
if (list[i][j] != s[j] && j < index)
index = j;
}
}
if (index == s.Length)
index = -1;
Console.WriteLine(index);
Console.ReadKey(); List<string> list = new List<string>();
list.Add("192.168.2.0");
list.Add("192.168.20.1");
list.Add("192.168.2.0");
string s = list[0];
int index = s.Length - 1;
for (int i = 1; i < list.Count; i++)
{
for (int j = 0; j < s.Length; j++)
{
if (list[i][j] != s[j] && j < index)
index = j;
}
}
Console.WriteLine(index);
Console.ReadKey();