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Programming and Data Structures · Linear Structures, Trees and Heaps
Official IIT answer key · IIT Delhi · Audited Aug 2026
GATE CSE 2020 Q16 · MCQ · 1 mark
Key concept
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Topic notes
Across the provided GATE CS papers, this topic evaluates foundational data structures with an emphasis on implementation mechanics, boundary conditions, and asymptotic time complexities of core and advanced operations. Earlier questions focus directly on array-based circular queue pointer conditions and basic operation bounds (O(1) enqueue/dequeue). Recent questions test deep algorithmic understanding of multi-step operations like melding across disparate data structures such as doubly linked lists, binary heaps, and binary search trees.
Full Linear Structures, Trees and Heaps guide →What is the worst case time complexity of inserting n elements into an empty linked list, if the linked list needs to be maintained in sorted order?
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