（每日一练C++）CC208 数字发音

约定不等于承诺〃 2023-10-04 18:07 15阅读 0赞

### 描述 ###

给定一个非负整数**x**，请编写一个算法返回一个string，代表该整数的英文描述。

测试样例：

1234

返回："One Thousand,Two Hundred Thirty Four"

/*
     * 输入数字输出相应字符串
     * 
     */
    
    public class NumToStringx {
    	String[] baseNum = { "zero", "one", "two", "three", "four", "five", "six",
    			"seven", "eight", "nine", "ten", "eleven", "twelve", " thirteen",
    			" fourteen", " fifteen", " sixteen", "seventeen", "eighteen",
    			"nineteen", };
    	String[] tyNum = { "twenty", "thirty", "forty", "fifty", "sixty",
    			"seventy", "eighty", "ninety" };
    	String[] bigNum = { "", "shousand", "million", "billion" };
    
    	public void numToString(int n) {
    		StringBuffer result = null;
    		int temp;
    		int num = n;
    		int j = 0;
    		if (num == 0) {
    			System.out.println(baseNum[0]);
    			return;
    		}
    		while (num != 0) {
    			temp = num % 1000;// 三位数字分为一段
    			if (j == 0) {// j表示thousand、million、billion
    				result = tempToString(temp).append(" " + bigNum[j]);
    			} else {
    				result = tempToString(temp).append(" " + bigNum[j])
    						.append(" , ").append(result);
    			}
    			j++;
    			num = num / 1000;
    		}
    		System.out.println(result);
    	}
    
    	// 将三位数转换为string
    	public StringBuffer tempToString(int temp) {//
    		StringBuffer num = new StringBuffer();
    		int i = temp / 100;
    		if (i != 0)
    			num = num.append(baseNum[i] + " hundred ");
    		i = temp % 100;
    		if (0 < i && i < 19) {
    			num = num.append(baseNum[i]);
    		} else {
    			num = num.append(tyNum[i / 10 - 1]);
    			if (i / 10 != 0)// 排除尾数为0
    				num.append("-" + baseNum[i / 10]);
    		}
    
    		return num;
    	}
    
    	public static void main(String[] ede) {
    		NumToStringx numToStringx = new NumToStringx();
    		numToStringx.numToString(0);
    		numToStringx.numToString(46);
    		numToStringx.numToString(546);
    		numToStringx.numToString(6546);
    		numToStringx.numToString(1354565460);
    	}
    
    }