Question
In a data analysis scenario involving a fixed-size
dataset where elements need to be accessed frequently by their position, which data structure is generally most efficient for direct element access?Solution
Arrays provide O(1) (constant time) access to elements using their index because elements are stored in contiguous memory locations. This is highly efficient for frequent positional access in fixed-size datasets.
(225 + 125) ÷ 7 + 250 = ? + 20% of 800
32 × 3 (54 – 15) + 186 ÷ 3 ÷ 2 – (21)² = ?
193. 69 + 200.09 – 512.96 + 312.09 =?
I. x² + 3x – 154 = 0
II. y² + 5y – 126 = 0
33 + ? = 40% of 1420
[4(1/2) + 4(1/3)] × 12 – 42 = ?2
What value should come in the place of (?) in the following questions?
222 + 322 – 508 = ? * 5
181/8 + 51/4 – 63/8 = ? + 9/2
(106 + 14)/15 = ?/5
3.55 + 1.05 + 2.5 × 13 – 12% of 12.5 = ?