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what is a binary search ? and how it is useful in a sorted
internal table?
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Answer Posted / saplead.sai
The solution provided by Siddhart is though correct, I
would like to project the solution in a much detailed with
example.
Binary Search Basic rule - Sort the data in Ascending order.
Suppose we have random numbers ranging from 1 to 10000 and
we are searching for 4219. If the data is unorganized and
random....a sequential search would be time consuming.
Hence once the data is sorted in Ascending order. Binary
search would reduce the LOOKUP time.
In the FIRST PASS BINARY search would split the range of 1 -
10000 in to two halfs (i.e 1 - 4999 & 5000 - 10000) and
compares the 4219 which happens to fall in the first half.
In the next pass again two halfs are made and compared.
This way BINARY SEARCH works by dividing either data into
two halfs.
For internal table......or for anything else....this is it
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