题解 | 进制转换

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
    let result = 0;
    while(line = await readline()){
        let tokens = line.split(' ');
        const num = tokens[0].replace('0x', '');
        let index = num.length;
        if (tokens[0].startsWith('0x')) {
           for (let i of num) {
               result += Number(`0x${i}`) * (16**(index - 1));
               index--;
           }
        }
        console.log(result)
    }
}()