我的数据框
col1 col2 col3 cumProb
12 0 4 0.4
12 1 2 0.6
.. ..
i 1
我要分别创建Min Max列
col1 col2 col3 cumProb Min Max
12 0 4 0.4 0 0.4(0.4 not inclusive)
12 1 2 0.7 0.4 0.7(0.4 to 0.7 not inclusive)
.. .. ..
i 1 0.9 1.0 (0.9 to 1.0 inclusive)