Inclusion of Binary Search Algorithm

[Joywin2412]

I will write the binary search algorithm with well defined comments. Also I will include how to find the element that is just smaller than the element you wish to find and an element which is just greater than the element which is prequisite for many problems. Please assign me this issue @theutpal01.

[pritam1309]

i can write a binary search algorithm in a well defined manner that is easy to understand @theutpal01