Answer 1

Hi! Maybe you dont check the stack to be empty

"...Also, after checking all the parentheses, we need to check the stack to be empty -- if it's not empty, then the parentheses are not balanced."

Answer 2

Hi! does your program fail the last seventh test?

Answer 3

and you have fulfilled the condition of the problem, where it is necessary to check whether the stack is cleared after the last checking bracket?