华为2018机试题附自己的答案

package huawei.jishi; import java.util.Scanner; public class DivideString { public static void main(String[] args) throws Exception { // TODO Auto-generated method stub Scanner scanner = new Scanner(System.in); while (scanner.hasNext()) { String str = scanner.next(); int num = scanner.nextInt(); StringBuilder sb = new StringBuilder(); for (int i = 0; i < str.length(); i++) { if (str.charAt(i) >= 48 && str.charAt(i) <= 57) { } else { // 去掉数字,题目傻逼就傻逼在这，我是截取之后才去除数字的，结果通过60% sb.append(str.charAt(i)); } } // 去掉数字用正则 // String string2 = str.replaceAll("\\d",""); String string = divideStringByByte(sb.toString(), num); System.out.println(string); } } private static String divideStringByByte(String str, int num) throws Exception { // TODO Auto-generated method stub // 无效输入 if (str == null || str.length() < 1 || num < 1) { return ""; } // 按照GBK编码 int count = 0;// 中文的个数 byte[] bs = str.getBytes("GBK"); int len = bs.length; if (num < len) { for (int i = 0; i < num; i++) { if (bs[i] < 0) { count++; } } if (count % 2 == 0) { return new String(bs, 0, num, "GBK"); } else { return new String(bs, 0, num - 1, "GBK"); } } else { return str; } } }