Question

what is parentheses checker?why it is needed?​

Answer 1

Answer:

This is a slightly modified version of the problem which involves checking the validity of an expression based on operators and operands. ... This problem can be easily solved using stack in linear time O(N).

Reasons to Use Parentheses. The first function of parentheses is to offer extra information. Parentheses communicate to readers that the material inside the parentheses is not necessary to understand the main sentence, nor is it part of the grammar of the main sentence, but is pertinent enough to be included.