Services & ResourcesWolfram ForumsMathGroup Archive

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

Logical comparisons of items in a two lists

• To: mathgroup at smc.vnet.net
• Subject: [mg75446] Logical comparisons of items in a two lists
• From: "actuary at mchsi.com" <actuary at mchsi.com>
• Date: Tue, 1 May 2007 03:22:01 -0400 (EDT)

Hello:

I have two lists of real numbers, a & b.  I want two compare
individual items in one list to the corresponding items in the other
list.  For example Is a[[1]] > b[[1]]. At the end of the comparisons,
I want to count the "Trues".  I know how to do this use a "Table"
statement and a "Count" statement.  Is there a quicker, more efficient
way of counting the number of "Trues".

Thanks

Larry

• Follow-Ups:
  • Re: Logical comparisons of items in a two lists
    • From: Carl Woll <carlw@wolfram.com>