题解 | #删除字符串中出现次数最少的字符#

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

void async function () {
    const line = await readline();
    const map = new Map();
    let minCnt = Infinity;
    for(const c of line){
        map.set(c,(map.get(c)||0)+1);
    }
    for(const value of map.values()){
        minCnt = Math.min(minCnt,value);
    }
    let res = "";
    for(const c of line){
        if(map.get(c) !== minCnt) res+=c;
    }
    console.log(res);

}()