In a factory a printer prints labels for boxes. The printer uses colors which, for the sake of simplicity, are named with letters from a to z (except letters u, w, x or z that are for errors).
The colors used by the printer are recorded in a control string. For example a control string would be aaabbbbhaijjjm meaning that the printer used three times color a, four times color b, one time color h then one time color a... and so on.
Sometimes there are problems: lack of colors, technical malfunction and a control string is produced e.g. uuaaaxbbbbyyhwawiwjjjwwxym where errors are reported with letters u, w, x or z.
You have to write a function hist which given a string will output the errors as a string representing a histogram of the encountered errors.
Format of the output string:
letter (error letters are sorted in alphabetical order) in a field of 2 characters, a white space, number of error for that letter in a field of 6, as many "*" as the number of errors for that letter and "\r".
The string has a length greater or equal to one and contains only letters from a to z.
s="uuaaaxbbbbyyhwawiwjjjwwxym"
hist(s) => "u 2 **\rw 5 *****\rx 2 **"
or with dots to see white spaces:
hist(s) => "u..2.....**\rw..5.....*****\rx..2.....**"
s="uuaaaxbbbbyyhwawiwjjjwwxymzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzz"
hist(s) => "u..2.....**\rw..5.....*****\rx..2.....**\rz..31....*******************************"
or printed:
u 2 **
w 5 *****
x 2 **
z 31 *******************************
- Unfortunately most often Codewars compresses all white spaces into one.
- You can see another examples in the "Sample tests".
- Translators are welcome for all languages.