一道java笔试题，以为很简单，结果半天都没写对！请大虾给出个正确解答

lamlamlam · 发表于 2020-7-19 22:00:01

public class test {
public static void main(String[] arg) throws IOException {
String d="拾佰仟万拾佰仟亿拾佰仟万";
String s="零壹贰叁肆伍陆柒捌玖";
boolean zero=false;
int value=1101111001, count=0;
String Cvalue="";
while(value>0) {
int b=value-value/10*10;
if(!zero || b!=0) {
String t="";
if(b!=0) {
t=s.substring(b,b+1);
if(count>0) t+=d.substring(count-1,count);
zero=false;
}
else {
t="零";
zero=true;
}
Cvalue=t+Cvalue;
}
count++;
value/=10;
}

System.out.println(Cvalue);
}
}

lamlamlam · 发表于 2020-7-20 00:00:01

还有些问题，修正一下：
public class test {
public static void main(String[] arg) throws IOException {
String d="拾佰仟万拾佰仟亿拾佰仟万";
String s="零壹贰叁肆伍陆柒捌玖";
boolean zero=false;
int value=2021000789, count=0;
String Cvalue="";
while(value>0) {
int b=value-value/10*10;
if(!zero || b!=0) {
String t="";
if(b!=0) {
t=s.substring(b,b+1);
if(count>0) t+=d.substring(count-1,count);
zero=false;
}
else if(count!=4 && count!=8){
t="零";
zero=true;
}
Cvalue=t+Cvalue;
}
if(count==4 && !Cvalue.contains("万")) Cvalue="万"+Cvalue;
if(count==8 && !Cvalue.contains("亿")) Cvalue="亿"+Cvalue;
count++;
value/=10;
}
System.out.println(Cvalue);
}
}

super541 · 发表于 2020-7-20 15:15:01

搞了一下，
试验下,效果不错的.
----------------------------------------------
package com;

import java.io.*;

/**
* @author cct
*/
public class a
{
public static void main(String[] args)
{
String s = new String();
BufferedReader br = new BufferedReader(new InputStreamReader(System.in));

while (true)
{
try
{
System.out.println("请输入数字：并回车");
s = br.readLine();

Convert c = new Convert(s.toCharArray());
System.out.println(c);
}
catch (Exception e)
{
}
}
}
}

/**
* @author cct
*/
class Convert
{
final String[] str1 = { "", "拾", "百", "千" };

final String[] str2 = { "亿", "萬" };

final String[] number = { "", "壹", "贰", "叁", "肆", "伍", "陆", "柒", "捌", "玖" };

char[] num_char;

StringBuffer sb = new StringBuffer();

int last;

public Convert(char[] num)
{
num_char = num;
}

public String toString()
{
last = num_char.length % 4;
int pos = 0;
add(sb, new String(num_char, 0, last));
pos += last;
for (int i = (int) (num_char.length / 4); i > 0; i--)
{
if (i % 2 == 0)
sb.append(str2[0]);
else
sb.append(str2[1]);
add(sb, new String(num_char, pos, 4));
pos += 4;
}
if (last == 0)
sb.deleteCharAt(0);
return sb.toString();
}

/**
   * @param sb
   * @param temp
   */
private void add(StringBuffer sb, String temp)
{
char[] temp2 = temp.toCharArray();
int length = temp.length();
for (int i = 0; i < length; i++)
{
if (temp2[i] == '0')
if (sb.lastIndexOf("零") != sb.length() - 1 && last != 0)
sb.append("零");
else
;
else
{
sb.append(number[temp2[i] - '0']);
sb.append(str1[length - i - 1]);
}
}
try
{
if (sb.lastIndexOf("零") == sb.length() - 1)
sb.deleteCharAt(sb.lastIndexOf("零"));
}
catch (Exception e)
{
}
}
}

1213ct · 发表于 2020-7-20 16:30:01

中午没事做了一下,这样应该没有什么问题了吧,如果有请提出,大家共勉
import java.io.*;
import java.util.*;
/**
将输入的数字用中文表示出来
*/

public class NumberTest
{
private char ch;
private String[] charOfNum = {"零","壹","贰","叁","肆","伍","陆","柒","捌","玖"};
private String[] shibq = {"","拾","佰","仟"};
private String[] wany = {"个","萬","亿","萬","亿","萬","亿"};

String inputStringNum()
//从键盘输入有效数字
{
      BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));
      String string = null;
      try
      {
         string = reader.readLine();
      }catch(IOException ex)
      {
        System.err.println(ex.getMessage());
      }
      return stringReverse(disinfectZero(string));
}

private String disinfectZero(String string)
//将输入数字有效位前面的零清除
{
int length = string.length();
int i = 0;
String stringReturn = string;
if(Long.parseLong(string) == 0L)
{
stringReturn = "0";
}
else
{
while(string.charAt(i++) == '0')
{
stringReturn = string.substring(i,length);
}
}
return stringReturn;
}

private String stringReverse(String string)
//将输入的数字倒序排列
{
int length = string.length();
String stringReturn = "";
for(int i = 0;i<length;i++)
{
      ch = string.charAt(i);
      stringReturn = ch+stringReturn;
}

return stringReturn;
}

public String change()
{
   String string = inputStringNum();//获取输入数据
   String resultStr;
   String resultString = "";//保存结果

   if(Long.parseLong(string) == 0L)
   {
      resultString = "零";
   }
   else
   {

   //将数据分为四个一组
   int length = string.length();
   int intoffour = length/4;
         if((length%4) != 0)
   {
   intoffour+=1;
   }

   //将数据分组存放到字符串数组中，再分别转化
   String stringnum[] = new String[intoffour];
   for(int i = 0;i<intoffour-1;i++)
   {
   stringnum[i] = string.substring(i*4,(i+1)*4);
   }
   stringnum[intoffour-1] = string.substring((intoffour-1)*4,length);

   //获得完整的表达
   for(int i = 0;i<intoffour;i++)
   {
   resultStr = "";
   for(int j = 0;j<stringnum[i].length();j++)
   {
   ch = stringnum[i].charAt(j);
   String str = ""+ch;
   int charAt = Integer.parseInt(str);
   //if(charAt != 0)
   //{
      resultStr = charOfNum[charAt]+shibq[j]+resultStr;
   //}
   }
   if(Integer.parseInt(stringnum[i]) != 0)
   {
      resultString = resultStr+wany[i]+resultString;
   }
   else
   {
      resultString = "零"+resultString;
   }
   }
   }
   resultString = resultString.replaceAll("零拾", "零");
   resultString = resultString.replaceAll("零佰", "零");
   resultString = resultString.replaceAll("零仟", "零");
   resultString = resultString.replaceAll("[零]+", "零");
   resultString = resultString.replaceAll("零个","");
   resultString = resultString.replaceAll("零萬", "萬");
   resultString = resultString.replaceAll("零亿", "亿");
   return resultString;
}

public static void main(String[] args) throws Exception
{
NumberTest test = new NumberTest();
      System.out.println(test.change());
}
}

1213ct · 发表于 2020-7-20 18:00:02

super541 楼上两层
你输入0000002 看一下结果是什么?

1213ct · 发表于 2020-7-20 19:15:01

这下更好了
import java.io.*;
import java.util.*;
/**
将输入的数字用中文表示出来
*/

public class NumberTest
{
private char ch;
private String[] charOfNum = {"零","壹","贰","叁","肆","伍","陆","柒","捌","玖"};
private String[] shibq = {"","拾","佰","仟"};
private String[] wany = {"个","萬","亿","萬","亿","萬","亿"};
public String exit = null;

String inputStringNum()
//从键盘输入有效数字
{
      BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));
      String string = null;
      try
      {
         string = reader.readLine();
      }catch(IOException ex)
      {
        System.err.println(ex.getMessage());
      }
      if(string.equals("exit"))
      {
        System.exit(0);
      }
      return stringReverse(disinfectZero(string));
}

private String disinfectZero(String string)
//将输入数字有效位前面的零清除
{
int length = string.length();
int i = 0;
String stringReturn = string;
if(Long.parseLong(string) == 0L)
{
stringReturn = "0";
}
else
{
while(string.charAt(i++) == '0')
{
stringReturn = string.substring(i,length);
}
}
return stringReturn;
}

private String stringReverse(String string)
//将输入的数字倒序排列
{
int length = string.length();
String stringReturn = "";
for(int i = 0;i<length;i++)
{
      ch = string.charAt(i);
      stringReturn = ch+stringReturn;
}

return stringReturn;
}

public String change()
//将数字转化为文字表达
{
   String string = inputStringNum();//获取输入数据
   String resultStr;
   String resultString = "";//保存结果

   if(Long.parseLong(string) == 0L)
   {
      resultString = "零";
   }
   else
   {

   //将数据分为四个一组
   int length = string.length();
   int intoffour = length/4;
         if((length%4) != 0)
   {
   intoffour+=1;
   }

   //将数据分组存放到字符串数组中，再分别转化
   String stringnum[] = new String[intoffour];
   for(int i = 0;i<intoffour-1;i++)
   {
   stringnum[i] = string.substring(i*4,(i+1)*4);
   }
   stringnum[intoffour-1] = string.substring((intoffour-1)*4,length);

   //获得完整的表达
   for(int i = 0;i<intoffour;i++)
   {
   resultStr = "";
   for(int j = 0;j<stringnum[i].length();j++)
   {
   ch = stringnum[i].charAt(j);
   String str = ""+ch;
   int charAt = Integer.parseInt(str);
   resultStr = charOfNum[charAt]+shibq[j]+resultStr;
   }
   if(Integer.parseInt(stringnum[i]) != 0)
   {
      resultString = resultStr+wany[i]+resultString;
   }
   else
   {
      resultString = "零"+resultString;
   }
   }
   }
   resultString = resultString.replaceAll("零拾", "零");
   resultString = resultString.replaceAll("零佰", "零");
   resultString = resultString.replaceAll("零仟", "零");
   resultString = resultString.replaceAll("[零]+", "零");
   resultString = resultString.replaceAll("零个","");
   resultString = resultString.replaceAll("个","");
   resultString = resultString.replaceAll("零萬", "萬");
   resultString = resultString.replaceAll("零亿", "亿");
   return resultString;
}

public static void main(String[] args) throws Exception
{
NumberTest test = new NumberTest();
System.out.println("请输入数字并回车，若要退出请输入exit");
while(true)
{
System.out.println(test.change());
}

}
}

没有童话时 · 发表于 2020-7-20 21:30:01

利用自动机理论来做。将数分成4位的节(Section).
public class RMBConvert
{
public RMBConvert()
{

}

private static string[] faceVal = new String[] { "零", "壹", "贰", "叁", "肆",
"伍", "陆", "柒", "捌", "玖" };

private static string []unit = new string[]{"仟","佰","拾",""};

private static string[] level = new String[] { "圆", "拾", "佰", "仟", "萬", "亿" };

public string Convert(string rmb)
{
int len = 0;
string ret = "";
string tmpY = "";
string tmpW = "";
string tmpG = "";
bool bFlag = false;

if(rmb.Length > 8)
rmb = rmb.PadLeft(12, '0');
else if(rmb.Length > 4)
rmb = rmb.PadLeft(8, '0');
else rmb = rmb.PadLeft(4, '0');

if(rmb.Length > 8)
{
tmpY = ConvertSection(rmb, 0, 4, false);
if(tmpY != "零")
{
ret += tmpY + "亿";
bFlag = true;
}
tmpW = ConvertSection(rmb, 4, 4, bFlag);
if(tmpW != "零")
{
ret += tmpW + "万";
bFlag = true;
}
tmpG = ConvertSection(rmb, 8, 4, bFlag);
if(tmpG != "零")
ret += tmpG;
else{
if(tmpY == "零" && tmpW == "零" && tmpG == "零")
ret = "零";
}
}
else if(rmb.Length > 4)
{
tmpW = ConvertSection(rmb, 0, 4, false);
if(tmpW != "零")
{
ret += tmpW + "万";
bFlag = true;
}
tmpG = ConvertSection(rmb, 4, 4, bFlag);
if(tmpG != "零")
{
ret += tmpG;
}
else
{
if(tmpW == "零")
ret = "零";
}
}
else{
ret = ConvertSection(rmb, 0, 4, false);
}
return ret;
}

public string ConvertSection(string value, int start, int len, bool headerZero)
{
return ConvertSection(value.Substring(start, len), headerZero);
}

public string ConvertSection(string value)
{
return ConvertSection(value, false);
}
/// <summary>
/// 主要看这个了
/// </summary>
/// <param name="value"></param>
/// <param name="headerZero"></param>
/// <returns></returns>
public string ConvertSection(string value, bool headerZero)
{
string regVal = value.PadLeft(4, '0');
string strOutput = "";

int state = 0;
for(int i=0; i<4;i++)
{
int crr = regVal[i] - 0x30;
switch(state)
{
case 0:
if( crr == 0 )
{
state = 1;
}
else{
state = 2;
strOutput += faceVal[crr] + unit[i];
}
break;
case 1:
if( crr == 0 )
{
state = 3;
}
else
{
state = 5;
if( headerZero )
strOutput += "零";
strOutput += faceVal[crr] + unit[i];
}
break;
case 2:
if( crr == 0 )
{
state = 4;
}
else
{
state = 5;
strOutput += faceVal[crr] + unit[i];
}
break;
case 3:
if( crr == 0 )
{
state = 11;
}
else
{
state = 6;
if( headerZero )
strOutput += "零";
strOutput += faceVal[crr] + unit[i];
}
break;
case 4:
if( crr == 0 )
{
state = 7;
}
else
{
state = 6;
strOutput += "零" + faceVal[crr] + unit[i];
}
break;
case 5:
if( crr == 0 )
{
state = 7;
}
else
{
state = 6;
strOutput += faceVal[crr] + unit[i];
}
break;
case 6:
if( crr == 0 )
{
state = 8;
}
else
{
state = 9;
strOutput += faceVal[crr] + unit[i];
}
break;
case 7:
if( crr == 0 )
{
state = 10;
}
else
{
state = 9;
strOutput += "零" + faceVal[crr] + unit[i];
}
break;
case 11:
if( crr == 0 )
{
state = 12;
strOutput = "零";
}
else
{
state = 13;
if( headerZero )
strOutput += "零";
strOutput += faceVal[crr] + unit[i];
}
break;
case 8:break;
case 9:break;
case 10:break;
case 12:break;
case 13:break;
} // end of switch
} // end of for
return strOutput;
}
}

lixiang718 · 发表于 2020-7-20 22:30:01

第一次见贴了这么多代码，不想看，为什么不说说解题思路？用什么方法？我觉得这样比看各种版本的代码好得多

lixiang718 · 发表于 2020-7-20 23:00:01

我们看到一串数字是怎么读的呢？是什么规则呢？
1。忽略前导零
2。从非零最高位读起，数字加上称谓，遇零忽略
如5变成“伍”，再根据位置如第3位则对应“佰”，加一起就是“伍佰”

没考虑太多，不对的地方楼下修改

dazhuguale · 发表于 2020-7-21 12:00:01

package test;

public class Money {
private static String[] UNIT = { "圆", "拾", "佰", "仟", "万", "拾", "佰", "仟",
"亿", "拾", "佰", "仟" };

private static String[] CHINESE_NUMBER = { "零", "壹", "贰", "叁", "肆", "伍",
"陆", "柒", "捌", "玖" };

private static String NUMBER = "0123456789";

public static void main(String[] args) {
long amount = 100000006543L;
String result = formatMoney(amount);
System.out.print(result);
}

public static String formatMoney(long amount) {
String money = Long.toString(amount);
String result = "";
char letter;
boolean hasZero = false;
final int count = money.length();
for (int i = 0; i < count; i++) {
letter = money.charAt(i);
if (letter == '0') {
hasZero = true;
if (count - 1 - i == 0) {
result += "圆";
}
if (count - 1 - i == 4 && !result.endsWith("亿")) {
result += "万";
hasZero = false;
}
if (count - 1 - i == 8) {
result += "亿";
hasZero = false;
}
} else {
if (hasZero) {
result += "零" + CHINESE_NUMBER[NUMBER.indexOf(letter)]
+ UNIT[count - 1 - i];
} else {
result += CHINESE_NUMBER[NUMBER.indexOf(letter)]
+ UNIT[count - 1 - i];
}
hasZero = false;
}
}
return result;
}
}

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