Mastering Binary Search

Binary search is one of the most fundamental algorithms in computer science.

Basic Binary Search

pythondef binary_search(arr, target):
    left, right = 0, len(arr) - 1
    while left <= right:
        mid = (left + right) // 2
        if arr[mid] == target:
            return mid
        elif arr[mid] < target:
            left = mid + 1
        else:
            right = mid - 1
    return -1

Common Patterns

Finding First Occurrence ### Finding Last Occurrence ### Finding Peak Element

Practice Problems

1. Search in Rotated Sorted Array
2. Find Minimum in Rotated Sorted Array
3. Search a 2D Matrix