Capitalization Families

Write a function that groups words by the number of capital letters and returns a dictionary of object entries whose keys are the number of capital letters and the values are the groups.

Examples

grouping(["HaPPy", "mOOdy", "yummy", "mayBE"]) ➞ {
  0: ["yummy"],
  2: ["mayBE", "mOOdy"],
  3: ["HaPPy"]
}

grouping(["eeny", "meeny", "miny", "moe"]) ➞ {
  0: ["eeny", "meeny", "miny", "moe"]
}

grouping(["FORe", "MoR", "bOR", "tOR", "sOr", "lor"]) ➞ {
  0: ["lor"],
  1: ["sOr"],
  2: ["MoR", "bOR", "tOR"],
  3: ["FORe"]
}

Notes

• The object entries have to be sorted by the number of capital letters.
• The groups will be arrays of all words sharing the same number of capital letters.
• The groups have to be sorted alphabetically (ignoring case).
• Words will be unique.