网易公司刁难的面试题,留下你的见解
今天去网易面试了
其中有这么一道题很郁闷
没答出来
原题是这样的
要求用户从键盘上输入一个数字,数字范围是(9位数以内)
要求输出正确的英文单词来
如：
用户输入：
1,返回:one
看了很多大家的评论
我想大家还没看清人家出这道题的真正用意
我在解释一下
用户任意从键盘上输入一个数字，要求你用代码实现该数字的汉译英
大家提到了switch,可是你想想数字范围是9位数以内，用户输入的数字是不定的，你怎么取舍，总不能写n个switch吧
还有人说了类似将阿拉伯数字用万千等表示的，这也太easy了吧，网易会考这么低能的题吗
大家不要扯跟这道题目无关的东西好吗 package name.zrl; public class ListTest { static String[] to_19 = { "zero", "one", "two", "three", "four", "five", "six", "seven", "eight", "nine", "ten", "eleven", "twelve", "thirteen", "fourteen", "fifteen", "sixteen", "seventeen", "eighteen", "nineteen" }; static String[] tens = { "twenty", "thirty", "forty", "fifty", "sixty", "seventy", "eighty", "ninety" }; static String[] denom = { "", "thousand ", "million", "billion", "trillion", "quadrillion", "quintillion", "sextillion", "septillion", "octillion", "nonillion", "decillion", "undecillion", "duodecillion", "tredecillion", "quattuordecillion", "sexdecillion", "septendecillion", "octodecillion", "novemdecillion", "vigintillion" }; public static void main(String[] argv) throws Exception { long tstValue = 1234567890987654321L; ListTest itoe = new ListTest(); System.out.println(itoe.english_number(tstValue)); } private String convert_nn(int val) { if (val < 20) return to_19[val]; int flag = val / 10 - 2; if (val % 10 != 0) return tens[flag] + "-" + to_19[val % 10]; else return tens[flag]; } private String convert_nnn(int val) { String word = ""; int rem = val / 100; int mod = val % 100; if (rem > 0) { word = to_19[rem] + " hundred "; } if (mod > 0) { word = word + convert_nn(mod); } return word; } public String english_number(long val) { if (val < 100) { System.out.println((int) val); return convert_nn((int) val); } if (val < 1000) { return convert_nnn((int) val); } for (int v = 0; v < denom.length; v++) { int didx = v - 1; long dval = new Double(Math.pow(1000, v)).longValue(); if (dval > val) { long mod = new Double(Math.pow(1000, didx)).longValue(); int l = (int) (val / mod); long r = (long) (val - (l * mod)); String ret = convert_nnn(l) + " " + denom[didx]; if (r > 0) { ret = ret + ", " + english_number(r); } return ret; } } return null; } }
blue兄，那么晚还回帖真敬业啊。
这个版本有些问题，缺少and，没考虑101这种情况吧。
