Python | Linear search on list or tuples

Let us see a basic linear search operation on Python lists and tuples. A simple approach is to do a linear search, that is 

• Start from the leftmost element of the list and one by one compare x with each element of the list.
• If x matches with an element, return True.
• If x doesn’t match with any of the elements, return False.

Example #1: Linear Search on Lists 

Python

# Search function with parameter list name
# and the value to be searched


def search(List, n):

    for i in range(len(List)):
        if List[i] == n:
            return True
    return False


# list which contains both string and numbers.
List = [1, 2, 'sachin', 4, 'Geeks', 6]

# Driver Code
n = 'Geeks'

if search(List, n):
    print("Found")
else:
    print("Not Found")

Output:

Found

Note: that lists are mutable but tuples are not. 

Example #2: Linear Search in Tuple 

Python

# Search function with parameter list name
# and the value to be searched


def search(Tuple, n):

    for i in range(len(Tuple)):
        if Tuple[i] == n:
            return True
    return False


# list which contains both string and numbers.
Tuple = (1, 2, 'sachin', 4, 'Geeks', 6)


# Driver Code
n = 'Geeks'

if search(Tuple, n):
    print("Found")
else:
    print("Not Found")

Output:

Found