week1_알고리즘(백준)

1000.js

const readline = require("readline");

const rl = readline.createInterface({
    input: process.stdin,
    output: process.stdout,
});

let input = [];

rl.on("line", function (line) {
    input = line.split(' ').map((el) => parseInt(el));
    console.log(input[0] + input[1]);
    rl.close();
}).on("close", function () {
    process.exit();
});

1009.js

const readline = require('readline');
const rl = readline.createInterface({
    input: process.stdin,
    output: process.stdout
});

let round = 0;
let arr = [];
rl.on("line", function (line) {
    if (round === 0) {
        round = +line;
    } else {
        arr.push(line.split(' '))
    }

    if (arr.length === round) {
        let answer = 0;

        for (let i = 0; i < arr.length; i++) {
            let a = +arr[i][0]
            let b = +arr[i][1]
            let answer = 1;
            for (let i = 0; i < b; i++) {
                answer = (answer * a) % 10
                if (answer === 0) {
                    answer = 10
                }
            }
            console.log(answer)
        }
        rl.close();
    }

}).on("close", function () {
    process.exit();
});

1052.js

const fs = require('fs');
const input = fs.readFileSync('/dev/stdin').toString().split(' ');
const n = input[0];
const k = input[1];
let answer = n;



function plusedBottle(n) {
    let count = 0;
    //count_물병을 합친 뒤 물병의 개수 (더 이상 합칠 수 없는 상태)
    while (n > 0) {
        if (n % 2 === 1) count++;
        n = parseInt(n / 2);
    }
    return count;
}

while (true) {
    if (plusedBottle(answer) <= k) {
        break;
    } else {
        answer++;
        //물병을 한개 더 사옴 (최종물병갯수)
    }
}
console.log(answer - n)
//최종물병갯수-초기갯수

1076.js

const readline = require("readline");

const rl = readline.createInterface({
    input: process.stdin,
    output: process.stdout,
});

let input = [];

rl.on("line", function (line) {
    input.push(line)
    if (input.length === 3) {
        let arr = [];
        let r1 = input[0];
        let r2 = input[1];
        let r3 = input[2];
        const color = ["black", "brown", "red", "orange", "yellow", "green", "blue", "violet", "grey", "white"];

        if (color.includes(r1)) {
            r1 = color.indexOf(r1)
        }
        if (color.includes(r2)) {
            r2 = color.indexOf(r2)
        }
        if (color.includes(r3)) {
            r3 = 10 ** color.indexOf(r3)
        }

        console.log(('' + r1 + r2) * r3)
        rl.close();
    }

}).on("close", function () {
    process.exit();
});

1076 console.log (간결화)