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 concatenate all elements of A from the ith element to the jth element, and print 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.
PROBLEM: 7, 8, ['2399', '1209', 'B', 'r', 'c', 'o', 'E', 'k', 'H', '7301', 'C', '7109', 'w', '1491', '1071', '7125', '4445', 'X', 'Q', 'c', '4565']

SOLUTION: Ek

PROBLEM: 5, 13, ['9669', '7783', 'M', 'Q', 'U', '3521', '9305', 'X', 'd', '7401', '4845', '9237', 'P', 'o', 'O']

SOLUTION: U35219305Xd740148459237P

PROBLEM: 8, 17, ['2971', 'M', '6369', 'c', '6201', 'U', '7515', 's', 'A', '8589', '5767', '6731', '4699', '8081', '2025', '3985', '145', '721', 'a', 'k']

SOLUTION:
sA8589576767314699808120253985145