Binary Search in C

K&R C Exercise 3-1: Binary Search with One Comparison Per Loop

Posted on by Sandeepa Nadahalli

Exercise 3-1. Our binary search makes two tests inside the loop, when one would suffice (at the cost of more tests outside). Write a version with only one test inside the loop and measure the difference in run-time. The standard K&R binsearch performs two comparisons per iteration — it checks x < v[mid], then x …

Binary Search in C – Iterative and Recursive with Example

Posted on by Sandeepa Nadahalli

Binary search in C finds a target value in a sorted array by repeatedly halving the search space. At each step it compares the target against the middle element: if they match, the search is done; if the target is smaller, discard the right half; if larger, discard the left half. This gives O(log n) …