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: 8, 19, ['K', 'X', '7907', 'q', '9587', '3037', '6277', 'D', 'H', '6185', '6775', '2505', '5841', 'z', 'u', '2285', '9575', '8269', 'm', 'z', '513', '6769', '1037', 'j', '2193']

SOLUTION: DH6185677525055841zu228595758269m

PROBLEM: 1, 4, ['s', '3965', 'K', '8535', 'c']

SOLUTION: s3965K8535

PROBLEM: 3, 18, ['s', 'L', '9243', '9087', 'F', 'r', 'J', 'Z', '6141', '6951', 'l', '2253', 'X', '6729', '2547', 'w', '5985', '3117']

SOLUTION:
92439087FrJZ61416951l2253X67292547w59853117