ZZULIOJ 1134: 字符串转换，Java

1134: 字符串转换

import java.util.Scanner;
public class Main {
    public static void main(String[] args) {
    Scanner cin = new Scanner(System.in);String str=cin.nextLine();int ans=0;for(int i=0;i<str.length();i++)if(str.charAt(i)>='0'&&str.charAt(i)<='9')ans=ans*10+str.charAt(i)-'0';System.out.println(ans*2);}
}