input: Write a function to compute the sum of the squares of numbers in a given range, including the start and end numbers. If the input range is empty (start > end), return 0.
  
  def sumOfRanges(start, end):
   if start > end:
          return 0
   sum = 0
   for i in range(start, end+1):
          sum += i*i
   return sum
  
  assert sumOfRanges(10,20) == 673
  assert sumOfRanges(1,5) == 55
  assert sumOfRanges(0,0) == 0
  assert sumOfRanges(5,5) == 25
  assert sumOfRanges(20, 10) == 0
output: def sumOfRanges(start, end):
      if start > end:
          return 0
      sum = 0
      for i in range(start, end+1):
          sum += i*i
      return sum