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 () {
    // Write your code here
    while ((line = await readline())) {
        const obj = {};
        let list = line.split("");
        let min = line.length;
        list.forEach((item) => {
            if (obj[item]) {
                obj[item]++;
            } else {
                obj[item] = 1;
            }
        });

        for (const key in obj) {
            min = Math.min(min, obj[key]);
        }

        let result = "";
        list.forEach((item) => {
            if (obj[item] !== min) {
                result += item;
            }
        });
        console.log(result);
    }
})();