题解 | #截取字符串#
截取字符串
http://www.nowcoder.com/practice/a30bbc1a0aca4c27b86dd88868de4a4a
public class Main {
public static void main(String[] args) {
Scanner scan = new Scanner(System.in);
if(scan.hasNext()){
String str=scan.nextLine(); //相当于开辟了两段空间
int num = scan.nextInt(); //nextInt() 将输入的信息的下一个标记扫面为int
System.out.print(str.substring(0,num));
}
scan.close();
}
}
