void leftTurn(nodeT* curr){
	nodeT* parent = curr->parent;
	nodeT* left = curr->left;
	nodeT* grandParent = parent->parent;
	if(grandParent != NULL){
		if(grandParent->left == parent)
			grandParent->left = curr;
		else grandParent->right = curr;
	} else root = curr;
	curr->parent = grandParent;
	curr->left = parent;
	parent->parent = curr;
	parent->right = left;
	if(left != NULL)
		left->parent = parent;
	reBalance(parent);
}