input: Write a python function to convert a list of strings to camel case.
  assert convertToCamelCase(["hello", "world"]) == "HelloWorld"
  assert convertToCamelCase(["convert", "to", "camel", "case"]) == "ConvertToCamelCase"
  assert convertToCamelCase(["a", "b", "c", "d"]) == "ABCD"
output: def convertToCamelCase(words):
      return ''.join(word.capitalize() for word in words)