TASK 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.
PROBLEM: 2, 22, ['4169', '3509', '9747', '7311', 'F', '9721', 'i', '8583', 'w', '7277', '2343', 'v', '9485', '6471', '8293', '2923', 'R', '9953', '3221', 'W', '265', 'o', '8391', '473']

SOLUTION: o265W32219953R2923829364719485v23437277w8583i9721F731197473509

PROBLEM: 3, 4, ['6025', 'W', '4529', 'D', '9719', '6937', '1967', 'U']

SOLUTION: D4529

PROBLEM: 1, 5, ['c', 'u', '3427', '9237', '2407']

SOLUTION:
240792373427uc