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Study Stuff for MCA Examinations - NIMCET
Study Stuff for MCA Examinations - NIMCET
Previous Year Question (PYQs)
The statements of pseudocode for searching the first element with key k in the linked list L are given below.
Arrange
them in the correct order.
(A) while (x!=NIL and x.key != k)
(B) x=L.head
(C) x=x.next
(D) return x
Choose the correct answer from the options given below:
Solution
Given statements:(A) \(\; \text{while }(x \neq NIL \;\wedge\; x.key \neq k)\)
(B) \(\; x = L.head\)
(C) \(\; x = x.next\)
(D) \(\; \text{return } x\)
Correct order:
1. Initialize pointer: \((B)\) → \(x = L.head\)
2. Loop until end or key found: \((A)\) → \(\text{while}(x \neq NIL \;\wedge\; x.key \neq k)\)
3. Move to next node: \((C)\) → \(x = x.next\)
4. Return result: \((D)\) → \(\text{return }x\)
✅ Therefore, the correct sequence is: \[ (B), (A), (C), (D) \]
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