Services & Resources / Wolfram Forums / MathGroup Archive

MathGroup Archive 2012

[Date Index] [Thread Index] [Author Index]

Search the Archive

Re: Integer Length Count

  • To: mathgroup at
  • Subject: [mg128767] Re: Integer Length Count
  • From: Ulrich Arndt <ulrich.arndt at>
  • Date: Sat, 24 Nov 2012 02:27:46 -0500 (EST)
  • Delivered-to:
  • Delivered-to:
  • Delivered-to:
  • Delivered-to:
  • References: <>

IntegerLength will do

dat = RandomInteger[2^100, 1000000];
Sort[Tally[Map[IntegerLength, dat]], #1[[1]] > #2[[1]] &] // Timing

Am 23.11.2012 um 09:28 schrieb sylviehobbs at

> I use a function in SAS that takes, in my case, a billion different 
integers of varying length and counts the frequency of the length of 
each integer by converting the digits in the integers into alpha 
characters and counting the frequency of the right most position of the 
alpha character.
> I am trying to do more and more routine programming in Mathematica and 
after poking around in documentation for the past 4 hours have yet to 
find the parallel function in Mathematica for counting the integer 
frequency length in a big data set. My family wants me to drop 
everything and put the Turkey in the oven. My cat Sylvester even fell 
asleep on his back in front of the refrigerator with his little legs up 
in the air, so he want miss the transfer of the Turkey from the stove to 
the refrigerator. OH WELL -- IT'S SHOW TIME!
> Meanwhile, let me know any recommendations you have on a Mathematica 
function that parallels the SAS Function.
> Sylvia Hobbs

  • Prev by Date: Re: simultaneous equation
  • Next by Date: Re: Integer Length Count
  • Previous by thread: Re: Integer Length Count
  • Next by thread: Re: Integer Length Count