treeHeight=$=_=>!_?0:Math.max($(_.left),$(_.right))+1
function treeHeight(node){if (node == null)return 0;else{/* compute the height of each subtree */var lheight = treeHeight(node.left);var rheight = treeHeight(node.right);/* use the larger one */if (lheight > rheight){return(lheight + 1);}else {return(rheight + 1);}}}- treeHeight=$=_=>!_?0:Math.max($(_.left),$(_.right))+1