Western Governors University (WGU) ICSC2211 D684 Introduction to Computer Science Practice Test

Question: 1 / 400

What is meant by "space complexity" in algorithms?

The total number of variables used

The total execution time of an algorithm

The memory used relative to input size

Space complexity refers to the amount of memory an algorithm uses in relation to the size of the input data. This metric takes into consideration both the temporary space allocated by the algorithm during its execution and the space required to store the input itself. By examining how the space utilized by an algorithm increases as the input size grows, developers can assess the efficiency of their algorithms in terms of memory usage.

When evaluating algorithms, understanding space complexity helps in determining how different algorithms scale with larger datasets and informs decisions about which algorithm to implement based on the available resources. This is crucial for applications where memory is limited or where performance is essential, such as in embedded systems or mobile devices.

In contrast to the other options, which either focus on different aspects of algorithm performance or specifics that do not encompass the broader concept of memory usage relative to input size, space complexity specifically addresses how the memory requirements change as input size varies. This nuanced understanding is vital for optimizing algorithms and ensuring effective resource management in programming.

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The amount of storage required for data structures

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