count the number occurrence of a character in a string

gistfile1.txt

## Q-1 Can write a method which will count the number occurrence of a character in a string?

## str = 'element'
def occurance(str)
	str_arr = str.split('')
  str_arr.inject({}) do |counter, i|
  	if counter.key?(i)
    	counter[i] +=1 
    else
    	counter[i] = 1
    end
    counter
  end
end