Conbinary tree
let root = newNode ( ' ' ) ; root . left = newNode ( ' ' ) ; root . left . left = newNode ( ' ' ) ; root . left . right = newNode ( ' ' ) ; root . right = newNode ( ' ' ) ; root . right . left = newNode ( ' ' ) ; root . right . right = newNode ( ' ' ) ; root . right . left . right = newNode ( ' ' ) ; getPalindromePath ( root ) ;