题解 | 排序

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

//本排序题就不要想着直接sort解决问题比较好吧……

void async function () {
    // Write your code here
    let n = await readline()
    n = parseInt(n)
    //console.log(n)
    let b = await readline()
    let arr = b.split(" ").map(a=>parseInt(a))
    let choose = await readline()
    choose = parseInt(choose)

    if(choose === 1){
        console.log(arr.sort((a,b)=>b-a).join(' '))
    }else if(choose === 0){
        console.log(arr.sort((a,b)=>a-b).join(' '))
    }
    
}()

/**
 * //升序
const upperSort = (arr)=>{

}

//降序
const downSort = (arr)=>{

}
 */

懒得自己写排序了……今天就先这样，下次一定……