/**
 *
 * Ashish Patel
 * e: ashishsushilPatel@gmail.com
 * w: https://ashish.me
 *
 */

function TreeNode(val) {
  this.val = val
  this.left = this.right = null
}

const increasingOrderSearchTree = t1 => {
  let newTree = new TreeNode(0)
  let current = newTree
  const inOrder = t1 => {
    if (t1 == null) {
      return
    }
    inOrder(t1.left)
    if (current) {
      current.right = new TreeNode(t1.val)
      current = current.right
    }
    inOrder(t1.right)
  }
  inOrder(t1)
  return newTree.right
}

test('increasingOrderSearchTree', () => {
  const t1 = new TreeNode(5)
  t1.right = new TreeNode(6)
  t1.left = new TreeNode(3)
  t1.left.left = new TreeNode(2)

  const t2 = new TreeNode(2)
  t2.right = new TreeNode(3)
  t2.right.right = new TreeNode(5)
  t2.right.right.right = new TreeNode(6)

  expect(increasingOrderSearchTree(t1)).toEqual(t2)
})