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
    const line = await readline()
    const hashMap = new Map()
    for(const char of line){
        if(hashMap.has(char)) hashMap.set(char,hashMap.get(char)+1)
        else hashMap.set(char, 1)
    }
    const values = Array.from(hashMap.values())
    const min_value = Math.min(...values)
    const str = []
    for(const char of line){
        if(hashMap.get(char) > min_value) str.push(char)
    }
    console.log(str.join(''))

}()