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| var numberToWords = function(num) {
const map = ['Zero','One','Two','Three','Four','Five','Six','Seven','Eight','Nine','Ten',
'Eleven','Twelve',"Thirteen", "Fourteen", "Fifteen","Sixteen", "Seventeen", "Eighteen", "Nineteen"];
const multiplesOfTen = {
20: 'Twenty',
30: 'Thirty',
40: 'Forty',
50: 'Fifty',
60: 'Sixty',
70: 'Seventy',
80: 'Eighty',
90: 'Ninety',
100: 'Hundred'};
const sanweishu = ['Hundred','Thousand','Million','Billion'];
if(num === 0) return map[0];
let i = 0,ans = '';
while(num){
let temp = getSanWeishu(num);
if(temp) ans = readSanWeishu(temp) + (i ? " " + sanweishu[i] + (ans ? " " : '') : '') + ans;
num -= temp;
num /= 1000;
i++;
}
return ans;
function readSanWeishu(num){
if(num < 20) {
return map[num];
}else if(num >= 20 && num < 100){
if(num % 10 === 0) return multiplesOfTen[num];
else {
let gewei = num % 10,shiwei = (num - gewei);
return multiplesOfTen[shiwei] + ' ' + map[gewei];
}
}else{
let baiwei = Math.floor(num / 100);
let ans = map[baiwei] + ' ' + sanweishu[0];
if(num % 100 !== 0) ans += ' ' + readSanWeishu(num - baiwei * 100);
return ans;
}
}
function getSanWeishu(num){
let temp = 0,k = 3,jinzhi = 1;
while(k && num){
let yushu = num % 10;
temp += yushu * jinzhi;
num -= yushu;
num /= 10;
jinzhi *= 10;
k--;
}
return temp;
}
};
|
