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 find all elements of A from the ith element to the jth element, reverse the order in which they occur, and then concatenate them to output 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. Perform the operations in order, i.e., do not concatenate the elements and then reverse the string.
Input: 1, 18, ['d', '2979', 'J', 'v', 'g', 'J', '9279', 'G', 'm', '9997', 'Q', '7849', '8115', 'j', 'V', 'd', '7549', '79', 'C', '2585', '5357', 's', 'y', '7239', 'r']

797549dVj81157849Q9997mG9279JgvJ2979d