$1)$ Write a Haskell function using pattern matching that duplicates each element in the

given list and concatenates them together twice. Only use Patterns, built$-$in functions and

Guards are not allowed.

For example, for the function duplicateList,

duplicateList $[6,3,7],$ the output should be $[6,6,3,3,7,7]$

$2)$ Write a Haskell function using only Patterns and Guards that generates a list of all

integers between the two given numbers inclusively. No built$-$in functions are allowed.

For example, for the function listNumbers,

listNumbers $35----$ the output should be $[3,4,5]$

listNumbers $63----$ the output should be $[6,5,4,3]$