Which of the following is a valid implementation of binary search in Python?

Practice Questions

Q1
Which of the following is a valid implementation of binary search in Python?
  1. def binary_search(arr, target): ...
  2. def binary_search(arr, target): for i in arr: if i == target: return i
  3. def binary_search(arr, target): while arr: ...
  4. def binary_search(arr, target): return arr.index(target)

Questions & Step-by-Step Solutions

Which of the following is a valid implementation of binary search in Python?
  • Step 1: Understand what binary search is. It is a method to find a target value in a sorted array by repeatedly dividing the search interval in half.
  • Step 2: Identify the components of a binary search function. It should take two inputs: a sorted array and a target value.
  • Step 3: Check if the function correctly initializes variables for the start and end of the search range.
  • Step 4: Ensure the function uses a loop to repeatedly check the middle element of the current search range.
  • Step 5: Verify that the function compares the middle element with the target value and adjusts the search range accordingly.
  • Step 6: Confirm that the function returns the index of the target value if found, or a value indicating it was not found.
No concepts available.
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