7/7[문제풀이] 백준 단계 3 / for문

[2739번] 구구단

const readline = require('readline');
 
const rl = readline.createInterface({
  input: process.stdin,
});
 
rl.on('line', (num) => {
  for (let x = 1; x <= 9; x++) {
    console.log(`${num} * ${x} = ${num * x}`);
  }
  rl.close();
}).on('close', () => {
  process.exit();
});

[10950번] A+B-3

let input = require('fs').readFileSync('/dev/stdin').toString().split('\n');
 
for (let x = 1; x <= input[0]; x++) {
    let numbers = input[x].split(' ');
    
    console.log(Number(numbers[0]) + Number(numbers[1]));
}

[8393번] 합

const input=require('fs').readFileSync('/dev/stdin').toString().split('\n')
 
const num = Number(input[0])
 
let sum = 0;
for(let x=1; x<=num; sum+=x++) {
    
}
    console.log(sum)

[15552번] 빠른 A+B

let input = require('fs').readFileSync('/dev/stdin').toString().split('\n');
 
let max = Number(input[0]);
let answer = '';
 
for (let x = 1; x <= max; x++) {
    let num = input[x].split(' ');
    answer += Number(num[0]) + Number(num[1]) + "\n";
}
 
console.log(answer);

[2741번] N 찍기

let input = Number(require('fs').readFileSync('/dev/stdin').toString());
 
let answer = '';
 
for (let x = 1; x <= input; x++) {
    answer += x + "\n";
}
 
console.log(answer);

[2742번] 기찍 N

let input = Number(require('fs').readFileSync('/dev/stdin').toString());
let answer = '';
for (let x = input; x >= 1; x--) {
    answer += x + "\n";
}
console.log(answer);

[11021번] A+B-7

let input = require('fs').readFileSync('/dev/stdin').toString().split('\n');
 
for (let x = 1; x <= input[0]; x++) {
    let numbers = input[x].split(' ');
    
    console.log(`Case #${x}: ${Number(numbers[0]) + Number(numbers[1])}`);
}

[11022번] A+B-8

let input = require('fs').readFileSync('/dev/stdin').toString().split('\n');
 
for (let x = 1; x <= input[0]; x++) {
    let numbers = input[x].split(' ');
    
    let num1 = Number(numbers[0]);
    let num2 = Number(numbers[1]);
    
    console.log(`Case #${x}: ${num1} + ${num2} = ${num1 + num2}`);
}

[2438번] 별 찍기 -1

let input = require('fs').readFileSync('/dev/stdin').toString();
 
let stars = "";
 
for (let x = 0; x < input; x++) {
  stars += "*"
  console.log(stars); 
}

[2439번] 별 찍기 -2

let input = require('fs').readFileSync('/dev/stdin').toString();
 
let num = Number(input);
 
for (let x = 0; x < num; x++) {
  let stars = '';
    
  for (let y = num - 1; y >= 0; y--) {
    stars += y <= x ? '*' : ' ';
  }
  
  console.log(stars);
}

[10871번] x보다 작은 수

let input = require('fs').readFileSync('/dev/stdin').toString().split('\n');
 
let totalNum = input[0].split(' ').map(x => Number(x));
let arr = input[1].split(' ').map(x => Number(x));
let result = [];
 
for (let x = 0; x <= totalNum[0]; x++) {
    if (totalNum[1] > arr[x]) {
        result.push(arr[x]);
    } 
}
 
console.log(result.join(' '));

출처 :  https://www.acmicpc.net/