DATA STRUCTURE:
Array DS, String in DS, Set, Dictionary, Recursion, Linked List DS, Stack DS, Queue DS, hash in DS, Tree DS, Heap in DS, Graph DS, Trie DS

ALGORITHMS: Searching Algorithms, Sorting Algorithms, Tree Traversal, Graph Algorithms,

PROBLEM SOLVING TECHNIQUES: Two Pointers, Sliding Window, Recursion, Dynamic Programming(DP), Greedy

input: arr[] = [1,2,3,4], x = 3 output: 2 Explanation: For array [1, 2, 3, 4], the element to be searched is 3. Since 3 is present at index 2, the output is 2. Input: arr[] = [10, 8, 30], x = 6
Output: -1
Explanation: The element to be searched is 6 and it is not present, so we return -1.

class Solution:
def search(self, arr, x):
# Code with the logical error fixed
for n in range(len(arr)):
if arr[n] == x:
return n # Return the index if found

# Only return -1 after the entire loop has completed,
# meaning the element was not found in the entire list.
return -1

arr = [1, 2, 3, 4]
x = 3
# Create an instance of the class to call the instance method
sol_instance = Solution()
print(sol_instance.search(arr, x))

Unsorted Lists:

When we have an unsorted array or list, linear search is most commonly used to find any element in the collection.
Small Data Sets: Linear Search is preferred over binary search when we have small data sets with
Searching Linked Lists: In linked list implementations, linear search is commonly used to find elements within the list. Each node is checked sequentially until the desired element is found.
Simple Implementation: Linear Search is much easier to understand and implement as compared to Binary Search or Ternary Search.

👆🏻Understanding this process is important in binary search. So try to think about it how we can search for 7 after you understand this you'll gain different between binary & linear search. In addition you can say which is more efficient and not😁 Don't be hesitate this course it's truly interesting👌

2️⃣POINTER TECHNIQUE Still now on studying...🧑‍💻

after then chatgpt gives me this👇 First: Forget the Name “Two Pointer”
Don’t think “two pointer technique”.
Think only this:
“How can I look at two places in the array at the same time and move intelligently?”
That’s it.