[ncl-talk] get index for A associated with B

[Xi Chang]

Hallo all,

Anyone can give me a hint how to get list of index for A which is
associated with B,
for illustration:

file A containts :
-1990
-1997
-1999
-2002

file B
-1993
-1997
-2002
-2005

and in the end, will produce file C which only containts:
-1997
-2002

I cant do it mannually becaise the time series are too long..
any suggestion for a  clean alogirhtm?

Thanks
Chang
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