题解 | #合并表记录#

const rl = require("readline").createInterface({ input: process.stdin });
var iter = rl[Symbol.asyncIterator]();
const readline = async () => (await iter.next()).value;
let record = {};
let isNumber = false
void async function () {
    // Write your code here
    while(line = await readline()){
        if(isNumber){
            let tempR = line.split(' ');
            if(record[tempR[0]]){
                record[tempR[0]] = record[tempR[0]] + Number(tempR[1])
            }else{
                record[tempR[0]] =  Number(tempR[1])
            }
        }
        isNumber = true;
    }
   
    for(key of Object.keys(record)){
        console.log(key, record[key])
    }
}()

Object.keys(value) 会对key进行排序，

而map.keys 没有排序作用