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: 15, 17, ['K', 'z', 'u', '6105', 'I', '1915', 'c', '4143', 'S', 'z', 'D', 'K', 'e', 'M', '6925', '7189', '3323', '7977', '7825', 'a', 'd', '9407', '8541', '7869', 'T', '5441', 'W', '3325', 'w']

SOLUTION: 332371896925

PROBLEM: 7, 7, ['5203', 'C', '929', 'r', '6435', 'p', '303']

SOLUTION: 303

PROBLEM: 4, 10, ['W', '9137', '663', 'C', 'c', 'l', '2605', 'q', 'O', '1249', '7473', '7535', 'F', 'W', '4613', '9055', '7109']

SOLUTION:
1249Oq2605lcC