package com.yeshi.buwan.util;

import javax.persistence.Entity;

/**
 * 将数字转为字母，将字母转为数字
 * 
 * @author Administrator
 * 
 */

@Entity
public class StringNumberUtil {
	private static String[] zms = { "a", "b", "c", "d", "e", "f", "g", "h", "i", "j", "k", "l", "m", "n", "o", "p", "q",
			"r", "s", "t", "u", "v", "w", "x", "y", "z" };

	/**
	 * 将字母转为数字
	 * 
	 * @param st
	 * @return
	 */
	public static String convertChar2Int(String st) {
		String number = "";
		for (int i = 0; i < st.length(); i++)
			for (int j = 0; j < zms.length; j++) {
				if ((st.charAt(i) + "").trim().equals(zms[j])) {
					number += ((10 + j) + "");
					break;
				}
			}
		return number;
	}

	/**
	 * 将数字转为字母
	 * 
	 * @param st
	 * @return
	 */
	public static String convertInt2Char(String st) {
		if (st.length() % 2 != 0)
			return "";
		String ch = "";
		for (int i = 0; i < st.length(); i += 2) {
			String number = ((st.charAt(i) + "").trim() + (st.charAt(i + 1) + "").trim());
			ch += zms[Integer.parseInt(number) - 10];
		}
		return ch;
	}
}