input: Write a python function to check if two strings are anagrams.
  assert isAnagram('apple', 'lepap') == True
  assert isAnagram('hello', 'billion') == False
  assert isAnagram('Dirty Room', 'Dormitory') == True
  assert isAnagram('Astronomer', 'Moon starer') == True
  assert isAnagram('The eyes', 'They see') == True
output: def isAnagram(s1, s2):
      s1 = ''.join(sorted(s1.replace(' ', '').lower()))
      s2 = ''.join(sorted(s2.replace(' ', '').lower()))
      return s1 == s2