Binary Search Algorithm In Java | FREE DSA Course in JAVA | Lecture 48

We are learning about the searching algorithms in arrays. We have covered linear search algorithms in the last class and now we are going to learn about a very common and more effective search algorithm ie. Binary search.


Before moving to binary search, let's take a more practical example of search from our day to day lives.


How do you search for a number in a dictionary. Say you have to search success in a dictionary.


The linear search algorithm approach will be that you will start from will work starting with a and go in a sequential manner but surely it will take a lot of time and no one will do that.


We know that success start with s and hence we'll randomly attempt to open the dictionary and many we get c. Surely s is ahead of c and hence you will now search ahead of c.


The next time you may get t and hence you'll limit your search before t obviously.


What you are actually doing is shortening up the scope of search until you arrive at s and ultimately will find the word success.


This is what we need to do in a binary search. We need to shorten our scope of research with every attempt in a binary search algorithm.


Let's see how we can actually write a program to cover this binary search algorithm approach to search an element in an array in Java.


Watch the complete lecture to understand the binary search algorithm.


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