Binary Search using Recursion in Java

Write a program to implement Binary search using recursion in java. In this tutorial, we are going to implement binary search algorithm using recursion in Java. In my previous tutorial, i have explained how to implement binary search in java using iterative approach.

Difference between recursion and iteration

Binary Search using Recursion in Java

Binary Search using Recursion in Java

 

How Binary Search Algorithm Works?

i) Binary search algorithm works only for sorted array.

ii) Binary search start by comparing middle element of the array with the search value. If it’s found, then the index of the middle element is returned. If the search value is less than or greater than the middle element, the search continues in the lower or upper half of the array.

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iii) Binary search time complexity.

a) Best case time complexity of binary search: O(1) (when element in found at mid index)

b) Worst case time complexity of binary search: O(logn)

In this example, i have explained how binary search works.

Binary Search algorithm explained with example

Binary Search algorithm explained with example

Binary Search using Recursion in Java

Let’s write a code to implement binary search using recursive algorithm in java.

 

Binary Search using Recursion Video Tutorial

 

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