Which of the following algorithms will run in constant time?(1 point)

Responses

traversing an array
traversing an array

binary search on a sorted array
binary search on a sorted array

accessing an element of an array
accessing an element of an array

sorting an array

1 answer

Among the options listed, the algorithm that runs in constant time is:

accessing an element of an array

This operation has a time complexity of O(1) because it retrieves an element at a specific index directly without needing to iterate through the array.

The other operations have different time complexities:

  • Traversing an array has a time complexity of O(n), where n is the number of elements in the array, as it requires accessing each element.
  • Binary search on a sorted array has a time complexity of O(log n), since it repeatedly divides the search interval in half.
  • Sorting an array typically has a time complexity of O(n log n) or worse, depending on the sorting algorithm used.

So, the only constant time operation is accessing an element of an array.

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