Arithmetic expressions without redundant parentheses. Knuth's TAOCP has Dudeney's Digital Century puzzle 7.2.1.6 problem 122 and it includes a description of expression grammar that generates expressions without redundant parentheses.
Arithmetic expressions without redundant parentheses. Knuth's TAOCP has Dudeney's Digital Century puzzle 7.2.1.6 problem 122 and it includes a description of expression grammar that generates expressions without redundant parentheses.