LastIndexOf谁能告诉我怎么用?
string s = "0013456719";
string p = "0123456789";
//string q = "9876543210";
Response.Write(s + "<br>");
Response.Write(p + "<br>");
//Response.Write(q + "<br>");
for (int i = 0; i < s.Length; i++)
{
Response.Write(i.ToString()+":"+s.LastIndexOf("1", i)+"<br>");
}
结果是
0013456719
0123456789
0:-1
1:-1
2:2
3:2
4:2
5:2
6:2
7:2
8:8
9:8
没看明白,谁能解释一下