Find out the index of number in the String array using binary search

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actually i know how to find indexof ({1,3,5,7,9},3) that is int array but i am little bit confused about how to find indexof ({"1","3","5","7","9"},"3") that is string array
i want to do this by using binary search i need guidelines thank you.

Posted 17-Nov-14 6:35am

shashanknautiyal

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Afzaal Ahmad Zeeshan · Answer 1 · 2014-11-17T07:32:00

Solution 1

They are both a like. Just their data types are different. One turn around would be, to conver the string values to integer values on the run time. Like this

C#

Convert.ToInt16(element);

.. and then run the same process on it.

Posted 17-Nov-14 7:32am

Afzaal Ahmad Zeeshan

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Sergey Alexandrovich Kryukov 17-Nov-14 16:17pm

The first part of the answer is correct, and the whole answer may work, depending on what's needed. But this is a very specialized solution. It won't work, for example, in the simple case when the string "032" and "32" are considered as different elements. Moreover, "binary search" (I hope, OP means the search based on dichotomy by that) only makes sense if the list is ordered. The really comprehensive answer would be using Java generics; the method should accept an element type as a generic parameter, and a comparison function using this type as one of the method arguments.
—SA