package com.dairui.chars;

import java.io.UnsupportedEncodingException;
import java.util.Scanner;

public class CutChar {
	public static void main(String[] args) throws UnsupportedEncodingException {
		Scanner scanner = new Scanner(System.in);
		System.out.println("请输入：");
		String string = scanner.nextLine();
		System.out.println("请输入截取长度：");
		int i = scanner.nextInt();
		byte[] ch = string.getBytes("GBK");
		System.out.println(timchar(ch, i));

	}

	static String timchar(byte[] ch, int n) {
		int count = 0;
		for (int i = 0; i < n; i++) {
			if (ch[0] < 1) {
				count++;

			}
		}
		if (count % 2 == 0) {
			return new String(ch, 0, n);

		} else {
			return new String(ch, 0, --n);
		}

	}

}