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: 15, 25, ['m', '6659', '1999', 'M', 'h', '3201', '9889', 's', 'a', 'd', 'M', 'l', 'H', 'D', 's', 'L', 'x', '8665', '5241', 'G', '813', 'w', '5637', 'f', '5907', 'Y', '5129', '1743']

5907f5637w813G52418665xLs