2016蓝桥杯假期任务之《猜字母》

标题：猜字母

    把abcd...s共19个字母组成的序列重复拼接106次，得到长度为2014的串。

    接下来删除第1个字母（即开头的字母a），以及第3个，第5个等所有奇数位置的字母。

    得到的新串再进行删除奇数位置字母的动作。如此下去，最后只剩下一个字母，请写出该字母。

答案是一个小写字母，请通过浏览器提交答案。不要填写任何多余的内容。

代码：

import java.util.Scanner;

public class Main {

	public static void main(String[] args) {

		StringBuffer str = new StringBuffer("abcdefghijklmnopqrs");
		StringBuffer str1 = new StringBuffer("");

		for (int i = 0; i <106; i++) {
			str1.append(str);
		}

		while (str1.length() != 1) {

			for (int i = 0; i 				str1.setCharAt(i, '\0');

			}
			for (int i = 0; i 				
				if (str1.charAt(i) == '\0') {
				
					str1.deleteCharAt(i);

				}				
			}
			
			System.out.println("剩余字符串长度："+str1.length());
			System.out.println("剩余字符串为："+str1);
		}	
	}

}

运行结果：

剩余字符串长度：1007
剩余字符串为：bdfhjlnpracegikmoqsbdfhjlnpracegikmoqsbdfhjlnpracegikmoqsbdfhjlnpracegikmoqsbdfhjlnpracegikmoqsbdfhjlnpracegikmoqsbdfhjlnpracegikmoqsbdfhjlnpracegikmoqsbdfhjlnpracegikmoqsbdfhjlnpracegikmoqsbdfhjlnpracegikmoqsbdfhjlnpracegikmoqsbdfhjlnpracegikmoqsbdfhjlnpracegikmoqsbdfhjlnpracegikmoqsbdfhjlnpracegikmoqsbdfhjlnpracegikmoqsbdfhjlnpracegikmoqsbdfhjlnpracegikmoqsbdfhjlnpracegikmoqsbdfhjlnpracegikmoqsbdfhjlnpracegikmoqsbdfhjlnpracegikmoqsbdfhjlnpracegikmoqsbdfhjlnpracegikmoqsbdfhjlnpracegikmoqsbdfhjlnpracegikmoqsbdfhjlnpracegikmoqsbdfhjlnpracegikmoqsbdfhjlnpracegikmoqsbdfhjlnpracegikmoqsbdfhjlnpracegikmoqsbdfhjlnpracegikmoqsbdfhjlnpracegikmoqsbdfhjlnpracegikmoqsbdfhjlnpracegikmoqsbdfhjlnpracegikmoqsbdfhjlnpracegikmoqsbdfhjlnpracegikmoqsbdfhjlnpracegikmoqsbdfhjlnpracegikmoqsbdfhjlnpracegikmoqsbdfhjlnpracegikmoqsbdfhjlnpracegikmoqsbdfhjlnpracegikmoqsbdfhjlnpracegikmoqsbdfhjlnpracegikmoqsbdfhjlnpracegikmoqsbdfhjlnpracegikmoqsbdfhjlnpracegikmoqsbdfhjlnpracegikmoqsbdfhjlnpracegikmoqsbdfhjlnpracegikmoqs
剩余字符串长度：503
剩余字符串为：dhlpaeimqbfjnrcgkosdhlpaeimqbfjnrcgkosdhlpaeimqbfjnrcgkosdhlpaeimqbfjnrcgkosdhlpaeimqbfjnrcgkosdhlpaeimqbfjnrcgkosdhlpaeimqbfjnrcgkosdhlpaeimqbfjnrcgkosdhlpaeimqbfjnrcgkosdhlpaeimqbfjnrcgkosdhlpaeimqbfjnrcgkosdhlpaeimqbfjnrcgkosdhlpaeimqbfjnrcgkosdhlpaeimqbfjnrcgkosdhlpaeimqbfjnrcgkosdhlpaeimqbfjnrcgkosdhlpaeimqbfjnrcgkosdhlpaeimqbfjnrcgkosdhlpaeimqbfjnrcgkosdhlpaeimqbfjnrcgkosdhlpaeimqbfjnrcgkosdhlpaeimqbfjnrcgkosdhlpaeimqbfjnrcgkosdhlpaeimqbfjnrcgkosdhlpaeimqbfjnrcgkosdhlpaeimqbfjnrcgkosdhlpaeimq
剩余字符串长度：251
剩余字符串为：hpembjrgodlaiqfnckshpembjrgodlaiqfnckshpembjrgodlaiqfnckshpembjrgodlaiqfnckshpembjrgodlaiqfnckshpembjrgodlaiqfnckshpembjrgodlaiqfnckshpembjrgodlaiqfnckshpembjrgodlaiqfnckshpembjrgodlaiqfnckshpembjrgodlaiqfnckshpembjrgodlaiqfnckshpembjrgodlaiqfnckshpem
剩余字符串长度：125
剩余字符串为：pmjgdaqnkhebrolifcspmjgdaqnkhebrolifcspmjgdaqnkhebrolifcspmjgdaqnkhebrolifcspmjgdaqnkhebrolifcspmjgdaqnkhebrolifcspmjgdaqnkhe
剩余字符串长度：62
剩余字符串为：mganhboicpjdqkerlfsmganhboicpjdqkerlfsmganhboicpjdqkerlfsmganh
剩余字符串长度：31
剩余字符串为：gnbipdkrfmahocjqelsgnbipdkrfmah
剩余字符串长度：15
剩余字符串为：nidrmhcqlgbpkfa
剩余字符串长度：7
剩余字符串为：irhqgpf
剩余字符串长度：3
剩余字符串为：rqp
剩余字符串长度：1
剩余字符串为：q