Re: AGAIN Nested while loop!!!

*To*: mathgroup at smc.vnet.net*Subject*: [mg71615] Re: [mg71594] AGAIN Nested while loop!!!*From*: Bob Hanlon <hanlonr at cox.net>*Date*: Sat, 25 Nov 2006 05:36:53 -0500 (EST)*Reply-to*: hanlonr at cox.net

lst = Table[Random[Integer, {i, 50}], {i, 6}] {11,30,44,28,50,31} So that the result has a consistent structure in either case, I would recommend that the output be {True, {}} or {False, {pairs}} Needs["DiscreteMath`Combinatorica`"]; Module[{sel=Select[KSubsets[lst,2], Mod[#.#,5]==0&]}, {Length[sel]==0,sel}] {False, {{11, 28}, {30, 50}, {44, 28}, {28, 31}}} Bob Hanlon ---- mumat <csarami at gmail.com> wrote: > I have a list of numbers > > lst = Table[Random[Integer, {i, 50}], {i, 6}] > > I want to write a program that if There are two numbers x, y in A where > > > Mod[x^2+y^2, 5]==0 reuturn False and the pair {x,y}, otherwise True! > > > For[i = 0, i < 6, For[j = i, j < 6, > If[Mod[lst[[i]]^2 + lst[[j]]^2, 3] == 0, > Return[False,{i,j}]];Break[], j++], i++] > > While loop and nested while loops accept only one counter "i". > > i=1;j=2; > > While[i<6 && While[j<6 && > Mod[lst[[i]]^2+lst[[j]]^2,7]=!=0,j++];i++];{i,j} > > {2,6} > > > Would be great if you could help me with this!! > > > Regards, > > chekad >