🚀 Day 51/150 – Linear Search in Python

Linear Search is one of the simplest searching techniques. It checks each element in the list one by one until the target value is found.

 Best for small or unsorted data
 Easy to understand and implement

Let’s explore different methods 👇

🔹 Method 1 – Using for Loop

numbers = [10, 20, 30, 40, 50]
target = 30

found = False

for num in numbers:
    if num == target:
        found = True
        break

print("Found" if found else "Not Found")

✅ Simple and clean approach

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🔹 Method 2 – Using while Loop

numbers = [10, 20, 30, 40, 50]
target = 25

i = 0
found = False

while i < len(numbers):
    if numbers[i] == target:
        found = True
        break
    i += 1

print("Found" if found else "Not Found")

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🔹 Method 3 – Using Loop with else

numbers = [10, 20, 30, 40, 50]
target = 20

for num in numbers:
    if num == target:
        print("Found")
        break
else:
    






print("Not Found")

✅ else runs only if loop completes without break

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🔹 Method 4 – Using Function

def linear_search(arr, target):
    for i, value in enumerate(arr):
        if value == target:
            return i
    return -1

result = linear_search([10, 20, 30, 40], 30)

if result != -1:
    print("Found at index:", result)
else:
    print("Not Found")