30. 2439(별 찍기-2)

/* Simple Hello World in Node.js */
let input = require('fs').readFileSync(0).toString().
split();

let answer = '';

for(let i = 1; i <= input[0]; i++){
    for(let j = 0; j < input[0] - i; j++){
        answer += " ";
    }
    for(let k = 0; k < i; k++){
        answer += "*";
    }
    answer += '\n';
}

console.log(answer);