SDE - 1

You have been given an integer array/list 'ARR' of size 'N'. Your task is to return the total number of those subsequences of the array in which all the elements are equal.

A subsequence of a given array is an array generated by deleting some elements of the given array with the order of elements in the subsequence remaining the same as the order of elements in the array.

Note :

As this value might be large, print it modulo 10^9 + 7

Kevin has recently learned the concept of “STACK”. During his practice, he got stuck in a problem where he has to reverse a string ‘S’ using a stack. So, he appoints you to help him in reversing the string ‘S’. All you have to do is to find the reversed string.

Please reverse the string using a stack so that Kevin gets to know where he is getting wrong after seeing your solution. It is guaranteed that strings will only be composed of English alphabets.

Introduce yourself.

What are your hobbies.

Family background.

Why this job?