Advent of PBT 2021 - Day 20

/**
 * Draw a tree with:
 * - a trunc made of '^',
 * - leaves on the left made of '('
 * - and the ones on the right made of ')'
 *
 * @param size - Size of the tree >=1
 */
declare function drawTree(size: number): string;

it("should be able to draw a tree of size 1", () => {
  // prettier-ignore
  expect(drawTree(1)).toEqual(
    "^\n" +
    "^\n" +
    "^"
  );
});

it("should be able to draw a tree of size 2", () => {
  // prettier-ignore
  expect(drawTree(2)).toEqual(
    " ^\n" +
    "(^)\n" +
    " ^\n" +
    " ^"
  );
});

it("should be able to draw a tree of size 5", () => {
  // prettier-ignore
  expect(drawTree(5)).toEqual(
    "    ^\n" +
    "   (^)\n" +
    "  ((^))\n" +
    " (((^)))\n" +
    "((((^))))\n" +
    "    ^\n" +
    "    ^"
  );
});