华为机试题---将字符转换为小写并将其对应的ASCII值加5

一、问题描述

 程序实现目标： 输入一个字符，将字符转换为小写，将其对应的ASCII值加5后，输出结果。

程序要求：若其值加5后的字符值大于'z',将其转换成从a开始的字符。
输入：‘A’

输出：‘f’

二、算法

	/**
	 *Changes the input char to the char whose ascii value
	 * is combination of  ASCII of original char and five. 
	 * @param input
	 * @return
	 */
	public char change(char input) {
		String low = String.valueOf(input).toLowerCase();
		char lowchar = low.toCharArray()[0];
		if (lowchar + 5 > 'z') {
			lowchar = (char) (lowchar + 5 - 'z' + 'a');
		} else {
			lowchar = (char)(lowchar + 5);
		}
		return lowchar;
	}

三、测试

package com.albertshao.csi.interview;

/**
 * @author albertshao
 *
 */
public class Main21 {

	public static void main(String[] args) {
		Main21 m = new Main21();
		System.out.println(m.change('A'));
	}
	
	/**
	 *Changes the input char to the char whose ascii value
	 * is combination of  ASCII of original char and five. 
	 * @param input
	 * @return
	 */
	public char change(char input) {
		String low = String.valueOf(input).toLowerCase();
		char lowchar = low.toCharArray()[0];
		if (lowchar + 5 > 'z') {
			lowchar = (char) (lowchar + 5 - 'z' + 'a');
		} else {
			lowchar = (char)(lowchar + 5);
		}
		return lowchar;
	}
}

运行结果：

f