题解 | #字符串加解密#

const readline = require('readline');
const rl = readline.createInterface({
    input: process.stdin,
    output: process.stdout
});
let arr = [];
rl.on('line',function(line){
    let str = line.trim().split('');
    arr.push(str);
    if(arr.length == 2){
        for(let i = 0; i < arr[0].length; i ++){
            if(arr[0][i] >= '0' && arr[0][i] <= '9'){
                arr[0][i] ++;
                if(arr[0][i] == 10){
                    arr[0][i] = 0;
                }
            } else if(arr[0][i] >= 'a' && arr[0][i] <= 'z'){
                if(arr[0][i] == 'z'){
                    arr[0][i] = 'A';
                } else {
                    let n = arr[0][i].charCodeAt() + 1;
                    arr[0][i] = String.fromCharCode(n).toUpperCase();
                }
            } else if(arr[0][i] >= 'A' && arr[0][i] <= 'Z'){
                if(arr[0][i] == 'Z'){
                    arr[0][i] = 'a';
                } else {
                    let n = arr[0][i].charCodeAt() + 1;
                    arr[0][i] = String.fromCharCode(n).toLowerCase();
                }
            }
        }
        console.log(arr[0].join(''));

        for(let i = 0; i < arr[1].length; i ++){
            if(arr[1][i] >= 0 && arr[1][i] <= 9){
                arr[1][i] --;
                if(arr[1][i] == -1){
                    arr[1][i] = 9;
                }
            } else if(arr[1][i] >= 'a' && arr[1][i] <= 'z'){
                if(arr[1][i] == 'a'){
                    arr[1][i] = 'Z';
                } else {
                    let n = arr[1][i].charCodeAt() - 1;
                    arr[1][i] = String.fromCharCode(n).toUpperCase();
                }
            } else if(arr[1][i] >= 'A' && arr[1][i] <= 'Z'){
                if(arr[1][i] == 'A'){
                    arr[1][i] = 'z';
                } else {
                    let n = arr[1][i].charCodeAt() - 1;
                    arr[1][i] = String.fromCharCode(n).toLowerCase();
                }
            }
        }
        console.log(arr[1].join(''));
    }
    
});