java实现阿拉伯数字转汉字

满足主函数中的测试用例。

实现最基本的基础上通过，string replaceAll方法替换一些特殊用例

replace和replaceAll的区别

replaceAll使用的参数可以是正则表达式

package practiceCode;

public class HanziTransfer {

    
    public static String transform(int num){
        String[] jinzhistr={"","十","百","千","万","十","百","千","亿"};
        String[] alaboNum={"零", "壹", "贰", "叁", "肆", "伍", "陆", "柒", "捌", "玖"}; 
        StringBuffer str =new StringBuffer();
        int[] result=new int[String.valueOf(num).length()];
        while(num!=0){
            int length=String.valueOf(num).length();
            int calResult=num/(int) Math.pow(10,length-1);
            int remainder =num-calResult*(int) Math.pow(10,length-1);
            result[length-1]=calResult;
            num=remainder;
        }
        
        for(int i=result.length-1;i>=0;i--){
            str.append(alaboNum[result[i]]);
            str.append(jinzhistr[i]);
        }
        String realStr = str.toString();
        
        realStr=realStr.replaceAll("零[十百千]", "元");
        realStr=realStr.replaceAll("零{2,}", "零");
        realStr=realStr.replaceAll("零([元万亿])", "$1");
        realStr=realStr.replaceAll("亿万", "亿");
        
        return realStr;
    }
    
    public static void main(String[] args) {
//        25364
//        466932300
//        12350006
//        100000
//        66699553001   
        int num=466932300;
        String str=transform(num);
        System.out.println(str);
    }

}