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, 19, ['o', '6967', '2087', 'F', '8501', '4423', '4607', '765', 'w', 'e', '7283', 'Q', 'O', 'p', 't', '2987', '2131', 't', 'l', '1567', 'u', 'y', 'T', 'B', '8445', '9271', 'a', 'K', '4575']

lt21312987t