Re: How to find the index of a maximal element in a list?

*To*: mathgroup at smc.vnet.net*Subject*: [mg72943] Re: [mg72911] How to find the index of a maximal element in a list?*From*: Carl Woll <carlw at wolfram.com>*Date*: Fri, 26 Jan 2007 06:18:26 -0500 (EST)*References*: <200701251119.GAA19752@smc.vnet.net>

Valter Sorana wrote: >I may have a mental block, but I cannot find anything better than > >Position[listName,Max[listName]] > >that traverses the list twice - once to find the maximum and once to find where it is. > >Isn't there a way to get both the index and the max value in one go? > >(of course one could write a loop that does this, but I want to avoid loops) > >Thanks, > >Valter. > > Use Ordering: lst={1,2,10,2}; Ordering[lst,-1] {3} Finding the max value using Part once the index is known is practically instantaneous. Carl Woll Wolfram Research

**References**:**How to find the index of a maximal element in a list?***From:*Valter Sorana <vsorana@yahoo.com>