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: 4, 10, ['C', '7103', '3123', '9575', 'y', '3583', 'm', '3311', '2453', '411', '5113', '6185', '7035', 'c', '2139', '6101', '8455', '4421']

SOLUTION: 9575y3583m33112453411

PROBLEM: 16, 16, ['j', '5995', '1981', 'v', '9505', 'o', '9255', 'A', 'S', '5543', 'U', 'f', '3517', 'T', 't', 'h', '9569', 'i', 'N', '8617']

SOLUTION: h

PROBLEM: 13, 18, ['2991', '1115', 'S', '3695', 'v', '3883', '5913', 'i', '4739', '4231', '1411', '2469', '2821', 'u', 'T', '4599', '245', '4369', 'A', '8287', 'N', 'O']

SOLUTION:
2821uT45992454369