After the execution of the following program for an input value string str $=\{\text{'}[\text{'},\text{'}[\text{'},$

$\text{'}]\text{'},\text{'})\text{'}\},$ the values of the char, top, and stack respectively are followings

IsBalanced$($str$)$

Stack stack

for char in str:

if char in $[\text{'}(\text{'},\text{'}[]$:

stack.Push$($char$)$

else:

if stack.Empty$()$: return False

top $\backslash$leftarrowstack$.$Pop$()$

if $($top $=\{[\text{'}$and char $!=\text{'}\text{'})$ or

$($top $=\text{'}(\text{'}$ and char $!=\text{'}\text{'})$:

return False

return stack.Empty$()$

char: $),$ pop: $[,$ stack: $)$

char: $[,$ pop: $[,$ stack: empty

char: $[,$ pop: $),$ stack: empty

char: $),$ pop: $[,$ stack: empty