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())) {
        // let tokens = line.split(' ');
        let map = new Map();
        let count;
        for (let i of line) {
            if (map.has(i)) {
                count = map.get(i);
                map.set(i, count + 1);
            } else {
                map.set(i, 1);
            }
        }
        let maxValue = map.get(line[0]);
        let maxKey = line[0];
        for (let [key, value] of map) {
            if (value < maxValue) {
                maxValue = value;
                maxKey = key;
            }
        }

        let deStr = "";
        for (let [key, value] of map) {
            if (value === maxValue) {
                deStr += key;
            }
        }
        // console.log("deStr", deStr, line);
        let resStr = deStr.split("");
        let resLine = line.split("");
        let res = resLine.filter((item) => {
            return !resStr.includes(item);
        });

        console.log(res.join(""));
    }
})();