If the array is [1, 2, 3, 4, 5] and the target is 3, what will be the mid index

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Question: If the array is [1, 2, 3, 4, 5] and the target is 3, what will be the mid index during the first iteration of binary search?

Options:

Correct Answer: 2

Solution:

In the first iteration, mid is calculated as (0 + 4) // 2 = 2, which corresponds to the value 3.

If the array is [1, 2, 3, 4, 5] and the target is 3, what will be the mid index during the first iteration of binary search?

If the array is [1, 2, 3, 4, 5] and the target is 3, what will be the mid index during the first iteration of binary search?

Step 1: Identify the array and the target value. The array is [1, 2, 3, 4, 5] and the target is 3.
Step 2: Determine the starting and ending indices of the array. The starting index is 0 (first element) and the ending index is 4 (last element).
Step 3: Calculate the mid index using the formula (start + end) // 2. Here, start is 0 and end is 4.
Step 4: Plug in the values into the formula: (0 + 4) // 2 = 4 // 2 = 2.
Step 5: The mid index is 2, which corresponds to the value 3 in the array.

Binary Search – A search algorithm that finds the position of a target value within a sorted array by repeatedly dividing the search interval in half.
Index Calculation – Understanding how to calculate the mid index using the formula (low + high) // 2.