Definition: In this task, you are given inputs i,j, and A, where i and j are integers and A is a list. You need to concatenate all elements of A from the ith element to the jth element, and print the resultant string. i and j will be non-negative, and will always have a value less than the length of A. i will always be less than j.
Input: 18, 21, ['7239', '519', 'r', 'i', '7235', '1237', '8725', '5423', 's', '9455', '9641', '9525', '7489', '9897', 'V', 'L', '9011', 'E', 'p', '4861', '1255', 'Y', 'v', 'W']

Ep48611255