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: 21, 24, ['r', 'G', 'n', '5055', 'z', 'k', '7719', 'Z', 'E', 'J', 'L', '647', '5777', 'W', 'M', '8099', 'F', 'I', 'Z', 't', 'Q', 'A', '1329', 'J', '2673']

J1329AQ