Hi all, Another path to a similar result :
(];parens;depthOf) ,. input ┌─┬──┬─┐ │(│ 1│1│ │(│ 1│2│ │a│ 0│2│ │^│ 0│2│ │2│ 0│2│ │)│_1│1│ │+│ 0│1│ │(│ 1│2│ │(│ 1│3│ │b│ 0│3│ │)│_1│2│ │^│ 0│2│ │2│ 0│2│ │)│_1│1│ │)│_1│0│ │=│ 0│0│ │(│ 1│1│ │c│ 0│1│ │^│ 0│1│ │2│ 0│1│ │)│_1│0│ └─┴──┴─┘ ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
