comefrom: <qiyuangong>069_Sqrt(x)_1.py
code: def mySqrt( x):
      if x == 0:
          return 0
      low = 0
      high = x
      last = x
      while high >= low:
          mid = (low + high) / 2
          temp = mid * mid
          if temp == x:
              return mid
          elif temp < x:
              low = mid + 1
              last = mid
          else:
              high = mid - 1
      return last
masked: def sample_funcname ( var_0 ) :
      if var_0 == 0 :
          return 0
      var_2 = 0
      var_3 = var_0
      var_4 = var_0
      while var_3 >= var_2 :
          var_6 = ( var_2 + var_3 ) / 2
          var_7 = var_6 * var_6
          if var_7 == var_0 :
              return var_6
          elif var_7 < var_0 :
              var_2 = var_6 + 1
              var_4 = var_6
          else :
              var_3 = var_6 - 1
      return var_4
  