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MathGroup Archive 2006

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Re: Use pattern to find minimum without using min

  • To: mathgroup at smc.vnet.net
  • Subject: [mg71842] Re: Use pattern to find minimum without using min
  • From: dh <dh at metrohm.ch>
  • Date: Fri, 1 Dec 2006 06:21:40 -0500 (EST)
  • References: <ekmdbc$7th$1@smc.vnet.net>


Hi,

your logic is wrong.

Here are two possibilities:

{9, 4, 6, 5, 3, 7} //. {{a___,

     b_, c_, d___} :> {a, b, d} /; (b < c), {a___, b_, c_, d___} :> {

       a, c, d} /; (b > c)}

or

{9, 4, 6, 5, 3, 7} //. {a___, b_, c_, d___} :>

    If[b < c, {a, b, d}, {a, c, d}]

by the way, why do you despise "Min?"

Daniel



wooks wrote:

> Tried

> 

> {9, 4, 6, 5, 3, 7} //. {a___, b_, c___, d_, e___} :> b /; (b < d)

> 

> and

> 

> {9, 4, 6, 5, 3, 7} //. {x_,y_,z___} :> {x,z} /; (x<y)

> 

> without much success.

> 



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