public class dddd{
public static void main(String args[]) {
String str = "sjjjssjjsjs";
int number = 0;
char arr[] = str.toCharArray();
for (int i = 0; i < arr.length; i++) {
if (arr[i] == 's') {
number++;
}
if (number == 5) {
System.out.print("第五次出现s的位置是:" + (i+1));
}
}
}
}