comefrom: <garvit244>1047_1.py
code: def removeDuplicates( S):
      stack = []
      if not S:
          return ""
      for char in S:
          if not stack:
              stack.append(char)
          else:
              first = stack[-1]
              if first == char:
                  stack.pop()
              else:
                  stack.append(char)
      if not stack:
          return ""
      return ''.join(stack)
masked: def sample_funcname ( var_0 ) :
      var_1 = [ ]
      if not var_0 :
          return ""
      for var_3 in var_0 :
          if not var_1 :
              var_1.append ( var_3 )
          else :
              var_6 = var_1 [ - 1 ]
              if var_6 == var_3 :
                  var_1.pop ( )
              else :
                  var_1.append ( var_3 )
      if not var_1 :
          return ""
      return ''.join ( var_1 )
  