C语言程序设计教程（第三版）课后习题10.7 （Java代码）

import java.util.Scanner;

public class Main {

public static void main(String[] args) {

Scanner sc = new Scanner(System.in);

         int n = sc.nextInt();

         String str = sc.next();

         int m = sc.nextInt();

         int m1 = n - m + 1; //数组的大小

         char[] Char = new char[m1];

         for (int i = m; i <= n; i++) 

             Char[i - m] = str.charAt(i - 1); //一个一个放进数组里面去

         for (int i = 0; i < Char.length; i++)

              System.out.print(Char[i]);

    }

}