Binary Search Topics

Master essential binary search problems and patterns frequently asked in interviews.

•   01 Basic Binary Search Search for a target in a sorted array
•   02 First & Last Position of Element Find the starting and ending index using modified binary search
•   03 Search Insert Position Find the position to insert element in sorted array
•   04 Peak Element Find a peak element where neighbors are smaller
•   05 Binary Search on Answer Apply binary search on solution space, e.g., sqrt, capacity, etc.

WONDERING, HOW DOES IT COVER PATTERNS?
These problems cover the most important binary search patterns for interviews:

Basic Binary Search → Standard binary search template for sorted arrays.
First & Last Position of Element → Modified binary search for boundary indices.
Search Insert Position → Binary search to find insert position / lower bound.
Peak Element → Binary search in unsorted arrays to find local maxima.
Binary Search on Answer → Decision-space search pattern for optimization problems.

Together, they ensure you understand classic binary search, boundary search, insert position, peak finding, and searching on answer space techniques.