Kata

Given a string of integers, count how many times that integer repeats itself, then return a string showing the count and the integer.

Example: countMe('1123') (count_me in Ruby)

• Here 1 comes twice so <count><integer> will be "21"
• then 2 comes once so <count><integer> will be "12"
• then 3 comes once so <count><integer> will be "13"

hence output string will be "211213".

Similarly countMe('211213') will return '1221121113' (1 time 2, 2 times 1, 1 time 2, 1 time 1, 1 time 3)

Return "" for empty, nil or non numeric strings