Problem 1: rotate array by n elements g4g
Solution 1a: https://github.com/padmaja2305/Data_structures_practice/blob/main/arr_rotation.cpp
Solution 1b: https://github.com/padmaja2305/Data_structures_practice/blob/main/arr_rotation_b.cpp
Solution 1c: https://github.com/padmaja2305/Data_structures_practice/blob/main/arr_rotation_c.cpp