comefrom: <qiyuangong>055_Jump_Game_1.py
code: def canJump( nums):
      length = len(nums)
      begin = length - 1
      for i in reversed(range(length - 1)):
          if i + nums[i] >= begin:
              begin = i
      return not begin
masked: def sample_funcname ( var_0 ) :
      var_2 = len ( var_0 )
      var_4 = var_2 - 1
      for var_7 in reversed ( range ( var_2 - 1 ) ) :
          if var_7 + var_0 [ var_7 ] >= var_4 :
              var_4 = var_7
      return not var_4
  