import org.junit.Test;
public class solution {
@Test
public void testFunc(){
String string="AA";
int res = transbase10(string);
System.out.println("res: "+res);
}
// 把26进制的字母转成10进制
public int transbase10(String string){
char[] charArr = string.toCharArray();
int res=0;
int exp=0;
for(int i=charArr.length-1;i>=0;i--){
int num = charArr[i]-'A'+1;
res=(int) (res+num*Math.pow(26, exp));
exp++;
}
return res;
}
}