题解 | #合并表记录#
合并表记录
https://www.nowcoder.com/practice/de044e89123f4a7482bd2b214a685201
const readline = require("readline"); const rl = readline.createInterface({ input: process.stdin, output: process.stdout, }); let arr = []; rl.on("line", (line) => { arr.push(line); }); rl.on("close", () => { const n = arr.shift(); const nums = arr; let obj={} nums.forEach(item=>{ let index=Number(item.split(" ")[0]) let num=Number(item.split(" ")[1]) if(obj[index]){ obj[index]+=num }else{ obj[index]=num } }) for(let i in obj){ console.log(`${i} ${obj[i]}`) } });