99 Problems

Scala !!!

Lists

• P01 (*) Find the last element of a list
• P02 (*) Find the last but one element of a list.
• P03 (*) Find the Kth element of a list.
• P04 (*) Find the number of elements of a list.
• P05 (*) Reverse a list.
• P06 (*) Find out whether a list is a palindrome.
• P07 (*) Flatten a nested list structure.
• P08 (*) Eliminate consecutive duplicates of list elements.
• P09 (*) Pack consecutive duplicates of list elements into sublists.
• P10 (*) Run-length encoding of a list.
• P11 (*) Modified run-length encoding.
• P12 (*) Decode a run-length encoded list.
• P13 (*) Run-length encoding of a list (direct solution).
• P14 (*) Duplicate the elements of a list.
• P15 (*) Duplicate the elements of a list a given number of times.
• P16 (*) Drop every Nth element from a list.
• P17 (*) Split a list into two parts.
• P18 (*) Extract a slice from a list.
• P19 (*) Rotate a list N places to the left.
• P20 (*) Remove the Kth element from a list.
• P21 (*) Insert an element at a given position into a list.
• P22 (*) Create a list containing all integers within a given range.
• P23 (*) Extract a given number of randomly selected elements from a list.
• P24 (*) Lotto: Draw N different random numbers from the set 1..M.
• P25 (*) Generate a random permutation of the elements of a list.
• P26 (*) Generate the combinations of K distinct objects chosen from the N elements of a list.