Which of the following algorithms can be used to find the first occurrence of a

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Question: Which of the following algorithms can be used to find the first occurrence of a target in a sorted array?

Options:

Correct Answer: Binary Search

Solution:

Binary search can be modified to find the first occurrence of a target in a sorted array.

Which of the following algorithms can be used to find the first occurrence of a target in a sorted array?

Which of the following algorithms can be used to find the first occurrence of a target in a sorted array?

Step 1: Understand that a sorted array means the elements are in order, either ascending or descending.
Step 2: Know that binary search is a method to find an element in a sorted array quickly.
Step 3: Modify the binary search algorithm to keep looking for the target even after finding it, to ensure you find the first occurrence.
Step 4: When you find the target, check if there is another occurrence of it to the left (lower index) in the array.
Step 5: Continue searching to the left until you can no longer find the target, which will give you the first occurrence.

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