input: Write a function to compute the sum of square numbers in a given range, including the start and end numbers. If the range is empty return 0.
  def sumOfRanges(start, end):
   sum = 0
   
   for i in range(start, end+1):
   sum += i*i
   
   return sum
  
  assert sumOfRanges(10,20)==673
  assert sumOfRanges(1,3)==14
  assert sumOfRanges(0,0)==0
  assert sumOfRanges(-3,-1)==14
  assert sumOfRanges(5,4)==0
output: def sumOfRanges(start, end):
      sum = 0
      if start > end:
          return sum
      for i in range(start, end + 1):
          sum += i * i
      return sum