HJ36 字符串加密

https://www.nowcoder.com/practice/e4af1fe682b54459b2a211df91a91cf3
js实现

const rl = require("readline").createInterface({ input: process.stdin });
let input_data = [];
rl.on("line", function (input) {
    input_data.push(input)
    if (input_data.length === 2) {
        let [kwords,words]=input_data
        let origin_words='abcdefghijklmnopqrstuvwxyz'
        kwords=kwords.toLowerCase()+origin_words
        let key_arr=[...new Set(kwords.split(''))]
        let map=new Map()
        for(let i=0;i<origin_words.length;i++){
            map.set(origin_words[i],key_arr[i])
        }
        console.log(Array.from(words.split(''),(x)=>{
            if(x.toLowerCase()===x){
                return map.get(x)
            }else{
                return map.get(x.toLowerCase()).toUpperCase()
            }
            
        }).join(''))
    }
});