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SingaporeComputer ScienceQuick questions
Data Structures
Quick questions on Arrays and records explained: H2 Computing
4short Q&A pairs drawn directly from our worked dot-point answer. For full context and worked exam questions, read the parent dot-point page.
What are two-dimensional arrays?Show answer
A 2D array (a grid or matrix) is indexed by row and column, grid[r][c], and is typically stored row by row in memory (row-major order). The address arithmetic extends naturally, so element access is still .
What are records?Show answer
A record (or struct) groups several fields, which may be of different types, under one name:
What is q2?Show answer
Why is inserting an element at the front of an array ? [1 mark]
What is q3?Show answer
Give one advantage of an array of records over several parallel arrays. [1 mark]
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