题解 | #X形图案#

let line;
while ((line = readline())) {
  let n = Number(line);
  for (let i = 0; i < n; i++) {
      let out = '';
    for (let j = 0; j < n; j++) {
      if (i == j || i + j == n - 1) {
          out += '*';
      } else {
          out += ' ';
      }
    }
    console.info(out);
  }
}