What determines the efficiency of an algorithm in terms of computational resources?

The efficiency of an algorithm in terms of computational resources is determined by the following factors:

• Time complexity — how long the algorithm takes to execute depending on the size of the input data.
• Space complexity — how much memory the algorithm requires to execute.

Additionally, the following are important:

• Use of processor time (CPU/GPU)
• Number of input/output operations
• Parallelization and code optimization

For example, an algorithm with a time complexity of O(n) will run faster than one with O(n²) on large data sets. Code optimization and the choice of efficient data structures also affect resource usage.