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: 3, 18, ['6681', 'Z', '2319', 'I', '5257', 'J', '1491', '5579', 'A', 'z', '2743', 'E', '7599', 'j', '7257', 'd', '4817', '4815', 'H', '2785']

48154817d7257j7599E2743zA55791491J5257I2319