Linear Search

Linear search is a fundamental searching algorithm that is used to find the occurrence of a target value in a given list or array. It is also known as sequential search, and it is a simple approach that involves iterating over all the elements of the list until the target value is found. Linear search is easy to implement and works well for small lists. However, it can be time-consuming for large datasets, and more efficient algorithms like binary search are preferred.

linear search

The linear search algorithm works as follows:

  1. Start from the first element of the list and compare it with the target value.
  2. If the element matches the target, return its index.
  3. If the element does not match, move to the next element and repeat the above step.
  4. If the end of the list is reached, the target is not present, and the algorithm returns -1.

Here is an example of a linear search algorithm in Python:

def linear_search(arr, target):
    for i in range(len(arr)):
        if arr[i] == target:
            return i
    return -1

In this example, the function linear_search takes two arguments: arr, which is the list to be searched, and target, which is the value to be found. The function iterates over each element in the list, comparing it with the target value. If a match is found, the index of the element is returned. If no match is found, the function returns -1.

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