Exercise 10 - Christmas Tree

function printTree(maxWidth) {
  printTop(maxWidth);
  printTrunk(maxWidth);
}
 
function printTop(maxWidth) {
  const height = maxWidth / 2;
  let width = 1;
  for (let i = 0; i < height; i++) {
    let line = "";
    let side = (maxWidth - width) / 2;
    for (let j = 0; j < side; j++) {
      line += " ";
    }
    for (let j = 0; j < width; j++) {
      if (Math.random() > 0.9) {
        line += "@";
      } else {
        line += "*";
      }
    }
    console.log(line);
    width += 2;
  }
}
 
function printTrunk(maxWidth) {
  let line = "";
  for (let i = 0; i < (maxWidth - 1) / 2; i++) {
    line += " ";
  }
  line += "*";
 
  console.log(line);
  console.log(line);
}
 
const maxWidth = 21;
printTree(maxWidth);