Category Archives: Array

Monk and Welcome Problem

Another Problem:


String and Hackerearth

String Upper:

String Lower:

Lower Upper Both:

Hackerearth Problem:: Toggle String

Another Approach:

Another Approach:


Helpful Link:

A good Array Example

Hackerrank problem:


Find Maximum and Minimum and Summation value from array

Did this problem from subeen vai’s book.

For maximum value:

For minimum value:



Will give here



Reverse Array


Used Subeen vai’s book for the example