Here is the code for pop method in stack to print a string in reverse order. But there is some missing word. Answer the questions that follow to execute the code successfully.
def popstack (stack)__ #Line 1
if isempty (stack): #Line 2
______ #Line 3
______ : #Line 4
top = len(stack) __ #Line 5
for a in range (top, –1, –1):
print stack__, #Line 7
return
Question 1 (i)
Which symbol is used to terminate the function popstack()?
(A) ; (B) : (C) , (D) !
Answer:
In python, a colon (:) is used to mark the beginning of a function.
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Checking all the options, we note that all give errors except one
So, the correct answer is (B)
Question 1(ii)
Fill the blank in line 3
(A) return (B) True (C) False (D) 0
Answer:
Question 1(iii)
Which variable or keyword will be best suited in fill the blank in line 4?
(A) elif (B) for (C) while (D) else
Answer:
Question 1(iv)
Fill the blank in line 5
(A) 0 (B) 1 (C) 2 (D) –1
Answer:
Question 1(v)
Which value will be used in line 7?
(A) (A) (B) [a] (C) <a> (D) {a}
Answer:
