题解 | #人民币转换#

const rl = require("readline").createInterface({ input: process.stdin });
var iter = rl[Symbol.asyncIterator]();
const readline = async () => (await iter.next()).value;

void (async function () {
    // Write your code here
    const words = ["零", "壹", "贰", "叁", "肆", "伍", "陆", "柒", "捌", "玖"];

    const eachWan = (num) => {
        let str = "";
        let key = 0;
        while (num > 0) {
            if (key === 0) {
                if (num % 10 > 0) str = words[num % 10];
            } else if (key === 1) {
                if (num % 10 === 1) str = "拾".concat(str);
                else if (num % 10 > 0) str = words[num % 10].concat("拾", str);
                else str = "零".concat(str);
            } else if (key === 2) {
                if (num % 10 > 0) str = words[num % 10].concat("佰", str);
                else if (str[0] !== "零") str = "零".concat(str);
            } else if (key === 3) {
                if (num % 10 > 0) str = words[num % 10].concat("仟", str);
                else if (str[0] !== "零") str = "零".concat(str);
            }
            num = parseInt(num / 10);
            key++;
        }
        return str;
    };

    while ((line = await readline())) {
        let tokens = line.split(".").map(Number);
        let str = "";
        if (tokens.length === 1) str = str.concat("整");
        else {
            let str1 = "";
            let str2 = "";
            if (parseInt(tokens[1]) === 0) {
                str2 = "整";
            } else if (parseInt(tokens[1] / 10) > 0) {
                str1 = words[parseInt(tokens[1] / 10)].concat("角");
                if (tokens[1] % 10 !== 0)
                    str2 = words[tokens[1] % 10].concat("分");
            } else str2 = words[tokens[1]].concat("分");

            str = str1.concat(str2, str);
        }
        let intNumber = tokens[0];
        let key = 0;
        let qianStr = "";
        while (intNumber > 0) {
            if (key === 0) {
                qianStr = eachWan(intNumber % 10000).concat("元");
                key++;
            } else if (key === 1) {
                qianStr = eachWan(intNumber % 10000).concat("万", qianStr);
                key = 2;
            } else if (key === 2) {
                qianStr = eachWan(intNumber % 10000).concat("亿", qianStr);
                key = 1;
            }
            intNumber = parseInt(intNumber / 10000);
        }
        console.log("人民币".concat(qianStr, str));
    }
})();