GATE DA 2025 Set 1 — Question 47
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Programming, Data Structures & Algorithms → Data Types & Control Statements → Loops (for, while)
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Question
Consider the following Python code snippet.When the above program is executed, at the end, which of the following sets contains
A={"this","that"}
B={"that","other"}
C={"other","this"}
while "other" in C:
if "this" in A:
A,B,C=A-B,B-C,C-A
if "that" in B:
A,B,C=C|A,A|B,B|C
"this"?Correct answer
(B) Only B
Solution
Let's trace the execution:Initialization:
Iteration 1:
Condition
Update using set difference:
Current state:
Update using set union (using current values):
Current state: Iteration 2:
Condition
Update using set difference:
Current state:
No update.Iteration 3:
Condition
Loop terminates.Final State:
The string
Iteration 1:
Condition
"other" in C is True.if "this" in A: True.Update using set difference:
Current state:
if "that" in B: True.Update using set union (using current values):
Current state: Iteration 2:
Condition
"other" in C is True.if "this" in A: True.Update using set difference:
Current state:
if "that" in B: False (B is ).No update.Iteration 3:
Condition
"other" in C is False (C is ).Loop terminates.Final State:
The string
"this" is only in set B.Continue learning with Success Tracker
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