Array - 15: Search a value in Unsorted & Sorted Array

Solution:
For Unsorted Array:
- Start from 0th index & keep on checking the target value.
- Whenever you find the value, return the index, else return -1 at last

For Sorted Array:
- We'll apply binary search here.
- get middle index & check target value
- If value matches, return index.
- If target value greater than middle indexed value, it means, our target value lies in later half of array, so start = mid + 1
- If target value less than middle indexed value, it means, our target value lies in first half of array, so end = mid - 1

Please check video for more info:

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Please make a video on dynamic programming and recursion