text: var BST  = require('../../lib/BST');
  
  function execute () {
      let tree = new BST();
      tree.insert(20);
      tree.insert(10);
      tree.insert(30);
  
      tree.insert(6);
      tree.insert(14);
      tree.insert(8);
  
      tree.insert(3);
      tree.insert(24);
      tree.insert(26);
  
      tree.print('PRE_ORDER');
  }
  
  module.exports.execute = execute ;
  