Re: Any better way for finding frequencies of list entries?

*To*: mathgroup at smc.vnet.net*Subject*: [mg26961] Re: [mg26923] Any better way for finding frequencies of list entries?*From*: "Hermann Meier" <hmeier at webshuttle.ch>*Date*: Tue, 30 Jan 2001 03:38:14 -0500 (EST)*Organization*: EUnet AG, Switzerland. A KPNQwest Company.*References*: <94vs1v$o9t@smc.vnet.net>*Sender*: owner-wri-mathgroup at wolfram.com

One can also rely on built-in functions: DigitCount[FromDigits[RealDigits[N[Pi,57]][[1]]]] {5, 6, 9, 4, 6, 4, 5, 6, 9, 3} This is the frequency of the numbers 1,2 ... 0 in N[Pi,57] With best regards Hermann Meier > In a message dated 2001/1/26 11:56:30 PM, doud25 at caramail.com writes: > > >I want to determine the frequencies of the entries in a list of integers > > > >For example, the following piece of code seems to work with Pi: > >pi = Join > > [ {3}, ToExpression[Characters[StringDrop[ToString[N[Pi, 57]], {1, > > > >2}]]]] > >Table[{i, Count[pi, i]}, {i, 0, 9}] > > > > {{0, 3}, {1, 5}, {2, 6}, {3, 9}, {4, 4}, {5, 6}, {6, 4}, {7, 5}, > > {8, 6}, {9, 9}} > > > >Question: Is there a more elegant way to do that? >