题解 | #写一段程序判断IP字符串是否属于内网IP#

const rl = require("readline").createInterface({ input: process.stdin });
var iter = rl[Symbol.asyncIterator]();
const readline = async () => (await iter.next()).value;

const VerifyIp = (ip) => {
    let ipArr = ip.split('.')
    let flag = 0
    if (ip === '127.0.0.1') {
        flag = 1
    }
    else if (ipArr[0] === '10') {
        flag = 1
    }
    else if (ipArr[0] === '172' && (Number(ipArr[1]) >= 16 && Number(ipArr[1]) <= 31)) {
        flag = 1
    }
    else if (ipArr[0] === '192' && ipArr[1] === '168') {
        flag = 1
    }
    return flag
}

void async function () {
    // Write your code here
    // 10.x.x.x
    // 172.16.x.x-172.31.x.x
    // 192.168.x.x
    // 127.0.0.1
    let inputArr = []
    while (line = await readline()) {
        inputArr.push(line)
    }
    console.log(VerifyIp(inputArr[0]))
}()