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.
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Question: 18, 22, ['2445', 'L', 'x', 'i', '9929', '3105', 'v', '445', 'O', '353', 'j', '9877', 'D', 'U', '885', '9485', 'V', '8219', '2963', '685', '1659', 'U']

Answer: U165968529638219


Question: 5, 6, ['2691', '9729', 'r', '4175', 'g', '5483']

Answer: 5483g


Question: 3, 20, ['x', 'o', 'b', 'L', '1895', 'Z', 'W', 'I', 'D', '4831', '8907', '5567', '6135', '241', 'M', 'i', '871', 'J', 'Q', '7255', 'L', '3165', '6471']

Answer:
7255QJ871iM2416135556789074831DIWZ1895Lb