TASK DEFINITION: In this task, you are given inputs 'i', 'j', and A, where 'i' and 'j' are integers and A is a list. A list is shown by two brackets and comma-separated numbers and characters inside, like ['1', '12', 'l']. You need to concatenate all elements of A from the ith element to the jth element, and then reverse the resulting 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'. Perform the operations in order, i.e., do not reverse first and then concatenate.
PROBLEM: 3, 3, ['H', '7843', '2823', '529']

SOLUTION: 3282

PROBLEM: 2, 2, ['6099', 'r']

SOLUTION: r

PROBLEM: 1, 8, ['855', '9127', '5873', 'f', 'K', 'N', 'G', 'C', 'Z', 'l']

SOLUTION:
CGNKf37857219558