what is the difference b/w linear search and binary search?
(how can these search)
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Answer Posted / asit kumsr tripathy
Linear search is ver easy and always search in sequential
way.
It starts searching from the first element upto the last
element until the search finds the number .
Let us take an example.
Let there are a list of numbers.
1,3,8,6,5,8,2,9
We have to search if 5 is there in the list or not.
So, we start from the first element from 1.
then we see 3,8,6 and then find 5.
As soon as we find the search element 5 in the list we stop
searching,otherwise we continue the search upto the last
element.
Binary search
In binary search we always start from the middle elment and
compare the middle element to the search element.
If the search element is less than the middle element then
we go to the lower half otherwise we go to the upper half.
In binary search the nos should be sorted in ascending
order at first.
Let us took an example of binary search.
Assume that we are reading a book.
The book has a huge volume.
let we have to find the page no 120 in this book.
The book has 200 pages approx.
Then we do not start looking for the page from the first
page, rather we look at the middle.
If the arbitrary page is 101 then we think that 120 paghe
is more than the 101 page so we go to the half which
contains more pages. So by using this method again and
again we can finally find out the page .
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