题解 | #合并表记录#
合并表记录
https://www.nowcoder.com/practice/de044e89123f4a7482bd2b214a685201
let num =readline();
let obj = {};
for(var i = 0;i < num;i++){
let arr = readline().split(' ');
if(!obj[arr[0]]){
obj[arr[0]] = arr[1];
}else{
obj[arr[0]] =Number(obj[arr[0]]) + Number(arr[1]);
}
}
for(let a in obj){
console.log(a + ' ' +obj[a]);
}