格式转换工具

package com.yunxiao;
public class M2N {
public static String MValue = "10";
public static String Shang = null;
public static int M = 10;
public static int N = 2;


public static void main(String[] args) {
String nValue = "";
Shang = MValue;
while (Shang.length() > 0) {
nValue = qiuyu(Shang) + nValue;
}
System.out.println(nValue);
}


/**
* 
* @param MTempValue
* @param m
* @param n
* @return
*/
public static String qiuyu(String MTempValue) {
Shang = "";
int temp = 0;
while (MTempValue.length() > 0) {
int t = getIntFromStr(MTempValue.substring(0, 1));
MTempValue = MTempValue.substring(1);
temp = temp * M + t;
Shang += getStrFromInt(temp / N);
temp = temp % N;
}
while (Shang.length() > 0 && Shang.charAt(0) == '0') {
Shang = Shang.substring(1);
}
return getStrFromInt(temp);
}


/**
* @param str
* @return
*/
public static int getIntFromStr(String str) {
return str.charAt(0) <= '9' && str.charAt(0) >= '0' ? str.charAt(0) - '0'
: str.charAt(0) - 'a' + 10;
}


/**
* @param value
* @return
*/
public static String getStrFromInt(int value) {
String result = null;
if (value >= 0 && value <= 9)
result = String.valueOf((char) ('0' + value));
else if (value > 9 && value < 36) {
result = String.valueOf((char) ('a' + value - 10));
} else {
result = "-1";
}
return result;
}


}