Re: Minimum value in a vector
Thanks to everyone for the solutions. I actually wrote this terribly ugly function. Terrible. This should go in the "don't write code like this section" in clojure book. (defn md2 [d1 d2 d3 d4 d5] (let [cnt (count d1)] (loop [i 0 v []] (if (= i cnt) v (do (if (= (get d1 i) (reduce min (map #(get % i) (list d1 d2 d3 d4 d5 (recur (inc i) (conj v 1)) (recur (inc i) (conj v 0 On Dec 2, 7:43 pm, Chouser wrote: > >> On Wed, Dec 2, 2009 at 6:22 PM, Don wrote: > >> > Thank you Stefan and Kevin. Awesome solutions that answer my > >> > question. However I actually made a mistake in posing my question. > >> > Let me attempt to ask my question again. > > >> > I have 5 vectors as such: > >> > a [2 4 6 7] > >> > b [1 3 9 2] > >> > c [2 4 5 6] > >> > d [6 1 3 8] > >> > e [4 8 2 1] > > >> > and the output i want is this > > >> > a1 [0 0 0 0] > >> > b1 [1 0 0 0] > >> > c1 [0 0 0 0] > >> > d1 [0 1 0 0] > >> > e1 [0 0 1 1] > > (defn min-cols [v] > (map #(apply min-key % (range (count v))) > (apply map vector v))) > > (defn mark-cols [v m] > (map (fn [i] (map #(if % 1 0) (map = m (repeat (count m) i > (range (count v > > (def v [[2 4 6 7] [1 3 9 2] [2 4 5 6] [6 1 3 8] [4 8 2 1]]) > > user=> (mark-cols v (min-cols v)) > ((0 0 0 0) (1 0 0 0) (0 0 0 0) (0 1 0 0) (0 0 1 1)) > > --Chouser -- You received this message because you are subscribed to the Google Groups "Clojure" group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en
Re: Minimum value in a vector
>> On Wed, Dec 2, 2009 at 6:22 PM, Don wrote: >> > Thank you Stefan and Kevin. Awesome solutions that answer my >> > question. However I actually made a mistake in posing my question. >> > Let me attempt to ask my question again. >> >> > I have 5 vectors as such: >> > a [2 4 6 7] >> > b [1 3 9 2] >> > c [2 4 5 6] >> > d [6 1 3 8] >> > e [4 8 2 1] >> >> > and the output i want is this >> >> > a1 [0 0 0 0] >> > b1 [1 0 0 0] >> > c1 [0 0 0 0] >> > d1 [0 1 0 0] >> > e1 [0 0 1 1] (defn min-cols [v] (map #(apply min-key % (range (count v))) (apply map vector v))) (defn mark-cols [v m] (map (fn [i] (map #(if % 1 0) (map = m (repeat (count m) i (range (count v (def v [[2 4 6 7] [1 3 9 2] [2 4 5 6] [6 1 3 8] [4 8 2 1]]) user=> (mark-cols v (min-cols v)) ((0 0 0 0) (1 0 0 0) (0 0 0 0) (0 1 0 0) (0 0 1 1)) --Chouser -- You received this message because you are subscribed to the Google Groups "Clojure" group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en
Re: Minimum value in a vector
(defn min-dist [coll] (let [minval (reduce min coll)] (map #(if (= minval %) 1 0) coll))) this function, if you pass user=> (min-dist [2 1 2 6 4]) (0 1 0 0 0) assume the 5 vectors are stored in a b c d e. user=> (apply map vector (map min-dist (map vector a b c d e))) ([0 0 0 0] [1 0 0 0] [0 0 0 0] [0 1 0 0] [0 0 1 1]) On Wed, Dec 2, 2009 at 7:59 PM, Don wrote: > I still can't figure it out. If have this set. > > a [2 4 6 7] > b [1 3 9 2] > c [2 4 5 6] > d [6 1 3 8] > e [4 8 2 1] > > If I do (reduce min (map #(get % 0) (list a b c d e))) > > It grabs the min value from index 0 of the five vectors and returns 1 > corresponding to 'b'. But I'm not sure how I would determine it's > coming from 'b'. I need to know that it comes from 'b' in order to > build the new vector. > > If I do (vec (map min a b c d e)) > > It grabs the min value from index (0, 1, 2, 3) and puts it in a vector > > [1 1 2 1] > > And I don't know from what vector the minimum value is coming from. > > The solution is probably already here but I can't think of it. Sorry. > > > On Dec 2, 3:40 pm, Wilson MacGyver wrote: >> assuming, vector a b c d e are already defined. >> >> I'd do >> >> user=> (map vector a b c d e) >> ([2 1 2 6 4] [4 3 4 1 8] [6 9 5 3 2] [7 2 6 8 1]) >> >> you can then use the solutions provided from previous messages >> to find the min value of each vector. >> >> so you then end up with >> >> [0 1 0 0 0] [0 0 0 1 0] [0 0 0 0 1] [0 0 0 0 1] >> >> at that point, you repeat the same trick >> >> (map vector [0 1 0 0 0] [0 0 0 1 0] [0 0 0 0 1] [0 0 0 0 1]) >> >> and that will give you >> >> [0 0 0 0] [1 0 0 0] [0 0 0 0] [0 1 0 0] [0 0 1 1] >> >> >> >> >> >> On Wed, Dec 2, 2009 at 6:22 PM, Don wrote: >> > Thank you Stefan and Kevin. Awesome solutions that answer my >> > question. However I actually made a mistake in posing my question. >> > Let me attempt to ask my question again. >> >> > I have 5 vectors as such: >> > a [2 4 6 7] >> > b [1 3 9 2] >> > c [2 4 5 6] >> > d [6 1 3 8] >> > e [4 8 2 1] >> >> > and the output i want is this >> >> > a1 [0 0 0 0] >> > b1 [1 0 0 0] >> > c1 [0 0 0 0] >> > d1 [0 1 0 0] >> > e1 [0 0 1 1] >> >> > Now I'm not sure if it can be done in one swoop, or should be done in >> > a loop. I was thinking a loop, but I'm having trouble thinking about >> > it. >> >> > I initially thought of creating a function that takes in 5 vectors and >> > returns a single vector. So the first time its called it would >> > return a1 [0 0 0 0] then call it again and return b1 [1 0 0 0] etc... >> > I know it will repeat calculations however I couldn't come up with >> > anything else. >> >> > Thank you. >> >> > On Dec 2, 2:55 pm, Kevin Downey wrote: >> >> user=> (vec (map min [2 4 6 7] [1 3 9 2] [2 4 5 6] [6 1 3 8] [4 8 2 1])) >> >> [1 1 2 1] >> >> user=> >> >> >> On Wed, Dec 2, 2009 at 2:53 PM, Stefan Kamphausen >> >> >> wrote: >> >> > Hi, >> >> >> > On Dec 2, 11:43 pm, Don wrote: >> >> >> I am having difficulty approaching this problem. I'm not sure if it >> >> >> can be done in one swoop, or requires a few steps. >> >> >> >> I have 5 vectors as such: >> >> >> >> a [2 4 6 7] >> >> >> b [1 3 9 2] >> >> >> c [2 4 5 6] >> >> >> d [6 1 3 8] >> >> >> e [4 8 2 1] >> >> >> And I want to take the minimum value at a given index between the >> >> >> vectors. Therefore, minimum value at index 0 would yield the value 1 >> >> >> from vector b. >> >> >> > a quick shot would be >> >> >> > (reduce min (map #(get % 0) (list a b c d e))) >> >> >> > It would be nicer to have a vector of vectors or a list of vectors at >> >> > the beginning, probably. >> >> >> > Cheers, >> >> > Stefan >> >> >> > -- >> >> > You received this message because you are subscribed to the Google >> >> > Groups "Clojure" group. >> >> > To post to this group, send email to clojure@googlegroups.com >> >> > Note that posts from new members are moderated - please be patient with >> >> > your first post. >> >> > To unsubscribe from this group, send email to >> >> > clojure+unsubscr...@googlegroups.com >> >> > For more options, visit this group at >> >> >http://groups.google.com/group/clojure?hl=en >> >> >> -- >> >> And what is good, Phaedrus, >> >> And what is not good— >> >> Need we ask anyone to tell us these things? >> >> > -- >> > You received this message because you are subscribed to the Google >> > Groups "Clojure" group. >> > To post to this group, send email to clojure@googlegroups.com >> > Note that posts from new members are moderated - please be patient with >> > your first post. >> > To unsubscribe from this group, send email to >> > clojure+unsubscr...@googlegroups.com >> > For more options, visit this group at >> >http://groups.google.com/group/clojure?hl=en >> >> -- >> Omnem crede diem tibi diluxisse supremum. > > -- > You received this message because you are subscribed to the Google > Groups "Clojure" group. > To post to this group, send email to clojure@googlegroups.com > Note that posts from new members are m
Re: Minimum value in a vector
On Wed, Dec 2, 2009 at 7:59 PM, Don wrote: > I still can't figure it out. If have this set. > > a [2 4 6 7] > b [1 3 9 2] > c [2 4 5 6] > d [6 1 3 8] > e [4 8 2 1] > > If I do (reduce min (map #(get % 0) (list a b c d e))) > > It grabs the min value from index 0 of the five vectors and returns 1 > corresponding to 'b'. But I'm not sure how I would determine it's > coming from 'b'. I need to know that it comes from 'b' in order to > build the new vector. > > If I do (vec (map min a b c d e)) > > It grabs the min value from index (0, 1, 2, 3) and puts it in a vector > > [1 1 2 1] > > And I don't know from what vector the minimum value is coming from. > > The solution is probably already here but I can't think of it. Sorry. (defn min-col [col vecs] (apply min (map #(nth % col) vecs))) (defn min-pos [col vecs] (let [m (min-col col vecs)] (map #(if (= m %) 1 0) (map #(nth % col) vecs (defn min-pos-vecs [vecs] (apply map vector (map #(min-pos % vecs) (range (count (first vecs)) user=> (min-pos-vecs [[2 4 6 7] [1 3 9 2] [2 4 5 6] [6 1 3 8] [4 8 2 1]]) ([0 0 0 0] [1 0 0 0] [0 0 0 0] [0 1 0 0] [0 0 1 1]) -- You received this message because you are subscribed to the Google Groups "Clojure" group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en
Re: Minimum value in a vector
On Wed, Dec 2, 2009 at 5:43 PM, Don wrote: > I am having difficulty approaching this problem. I'm not sure if it > can be done in one swoop, or requires a few steps. > > I have 5 vectors as such: > > a [2 4 6 7] > b [1 3 9 2] > c [2 4 5 6] > d [6 1 3 8] > e [4 8 2 1] > > And I want to take the minimum value at a given index between the > vectors. Therefore, minimum value at index 0 would yield the value 1 > from vector b. > (defn min-col [col vecs] (apply min (map #(nth % col) vecs))) user=> (min-col 0 [[2 4 6 7] [1 3 9 2] [2 4 5 6] [6 1 3 8] [4 8 2 1]]) 1 -- You received this message because you are subscribed to the Google Groups "Clojure" group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en
Re: Minimum value in a vector
I still can't figure it out. If have this set. a [2 4 6 7] b [1 3 9 2] c [2 4 5 6] d [6 1 3 8] e [4 8 2 1] If I do (reduce min (map #(get % 0) (list a b c d e))) It grabs the min value from index 0 of the five vectors and returns 1 corresponding to 'b'. But I'm not sure how I would determine it's coming from 'b'. I need to know that it comes from 'b' in order to build the new vector. If I do (vec (map min a b c d e)) It grabs the min value from index (0, 1, 2, 3) and puts it in a vector [1 1 2 1] And I don't know from what vector the minimum value is coming from. The solution is probably already here but I can't think of it. Sorry. On Dec 2, 3:40 pm, Wilson MacGyver wrote: > assuming, vector a b c d e are already defined. > > I'd do > > user=> (map vector a b c d e) > ([2 1 2 6 4] [4 3 4 1 8] [6 9 5 3 2] [7 2 6 8 1]) > > you can then use the solutions provided from previous messages > to find the min value of each vector. > > so you then end up with > > [0 1 0 0 0] [0 0 0 1 0] [0 0 0 0 1] [0 0 0 0 1] > > at that point, you repeat the same trick > > (map vector [0 1 0 0 0] [0 0 0 1 0] [0 0 0 0 1] [0 0 0 0 1]) > > and that will give you > > [0 0 0 0] [1 0 0 0] [0 0 0 0] [0 1 0 0] [0 0 1 1] > > > > > > On Wed, Dec 2, 2009 at 6:22 PM, Don wrote: > > Thank you Stefan and Kevin. Awesome solutions that answer my > > question. However I actually made a mistake in posing my question. > > Let me attempt to ask my question again. > > > I have 5 vectors as such: > > a [2 4 6 7] > > b [1 3 9 2] > > c [2 4 5 6] > > d [6 1 3 8] > > e [4 8 2 1] > > > and the output i want is this > > > a1 [0 0 0 0] > > b1 [1 0 0 0] > > c1 [0 0 0 0] > > d1 [0 1 0 0] > > e1 [0 0 1 1] > > > Now I'm not sure if it can be done in one swoop, or should be done in > > a loop. I was thinking a loop, but I'm having trouble thinking about > > it. > > > I initially thought of creating a function that takes in 5 vectors and > > returns a single vector. So the first time its called it would > > return a1 [0 0 0 0] then call it again and return b1 [1 0 0 0] etc... > > I know it will repeat calculations however I couldn't come up with > > anything else. > > > Thank you. > > > On Dec 2, 2:55 pm, Kevin Downey wrote: > >> user=> (vec (map min [2 4 6 7] [1 3 9 2] [2 4 5 6] [6 1 3 8] [4 8 2 1])) > >> [1 1 2 1] > >> user=> > > >> On Wed, Dec 2, 2009 at 2:53 PM, Stefan Kamphausen > > >> wrote: > >> > Hi, > > >> > On Dec 2, 11:43 pm, Don wrote: > >> >> I am having difficulty approaching this problem. I'm not sure if it > >> >> can be done in one swoop, or requires a few steps. > > >> >> I have 5 vectors as such: > > >> >> a [2 4 6 7] > >> >> b [1 3 9 2] > >> >> c [2 4 5 6] > >> >> d [6 1 3 8] > >> >> e [4 8 2 1] > >> >> And I want to take the minimum value at a given index between the > >> >> vectors. Therefore, minimum value at index 0 would yield the value 1 > >> >> from vector b. > > >> > a quick shot would be > > >> > (reduce min (map #(get % 0) (list a b c d e))) > > >> > It would be nicer to have a vector of vectors or a list of vectors at > >> > the beginning, probably. > > >> > Cheers, > >> > Stefan > > >> > -- > >> > You received this message because you are subscribed to the Google > >> > Groups "Clojure" group. > >> > To post to this group, send email to clojure@googlegroups.com > >> > Note that posts from new members are moderated - please be patient with > >> > your first post. > >> > To unsubscribe from this group, send email to > >> > clojure+unsubscr...@googlegroups.com > >> > For more options, visit this group at > >> >http://groups.google.com/group/clojure?hl=en > > >> -- > >> And what is good, Phaedrus, > >> And what is not good— > >> Need we ask anyone to tell us these things? > > > -- > > You received this message because you are subscribed to the Google > > Groups "Clojure" group. > > To post to this group, send email to clojure@googlegroups.com > > Note that posts from new members are moderated - please be patient with > > your first post. > > To unsubscribe from this group, send email to > > clojure+unsubscr...@googlegroups.com > > For more options, visit this group at > >http://groups.google.com/group/clojure?hl=en > > -- > Omnem crede diem tibi diluxisse supremum. -- You received this message because you are subscribed to the Google Groups "Clojure" group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en
Re: Minimum value in a vector
assuming, vector a b c d e are already defined. I'd do user=> (map vector a b c d e) ([2 1 2 6 4] [4 3 4 1 8] [6 9 5 3 2] [7 2 6 8 1]) you can then use the solutions provided from previous messages to find the min value of each vector. so you then end up with [0 1 0 0 0] [0 0 0 1 0] [0 0 0 0 1] [0 0 0 0 1] at that point, you repeat the same trick (map vector [0 1 0 0 0] [0 0 0 1 0] [0 0 0 0 1] [0 0 0 0 1]) and that will give you [0 0 0 0] [1 0 0 0] [0 0 0 0] [0 1 0 0] [0 0 1 1] On Wed, Dec 2, 2009 at 6:22 PM, Don wrote: > Thank you Stefan and Kevin. Awesome solutions that answer my > question. However I actually made a mistake in posing my question. > Let me attempt to ask my question again. > > I have 5 vectors as such: > a [2 4 6 7] > b [1 3 9 2] > c [2 4 5 6] > d [6 1 3 8] > e [4 8 2 1] > > and the output i want is this > > a1 [0 0 0 0] > b1 [1 0 0 0] > c1 [0 0 0 0] > d1 [0 1 0 0] > e1 [0 0 1 1] > > Now I'm not sure if it can be done in one swoop, or should be done in > a loop. I was thinking a loop, but I'm having trouble thinking about > it. > > I initially thought of creating a function that takes in 5 vectors and > returns a single vector. So the first time its called it would > return a1 [0 0 0 0] then call it again and return b1 [1 0 0 0] etc... > I know it will repeat calculations however I couldn't come up with > anything else. > > Thank you. > > On Dec 2, 2:55 pm, Kevin Downey wrote: >> user=> (vec (map min [2 4 6 7] [1 3 9 2] [2 4 5 6] [6 1 3 8] [4 8 2 1])) >> [1 1 2 1] >> user=> >> >> On Wed, Dec 2, 2009 at 2:53 PM, Stefan Kamphausen >> >> >> >> >> >> wrote: >> > Hi, >> >> > On Dec 2, 11:43 pm, Don wrote: >> >> I am having difficulty approaching this problem. I'm not sure if it >> >> can be done in one swoop, or requires a few steps. >> >> >> I have 5 vectors as such: >> >> >> a [2 4 6 7] >> >> b [1 3 9 2] >> >> c [2 4 5 6] >> >> d [6 1 3 8] >> >> e [4 8 2 1] >> >> And I want to take the minimum value at a given index between the >> >> vectors. Therefore, minimum value at index 0 would yield the value 1 >> >> from vector b. >> >> > a quick shot would be >> >> > (reduce min (map #(get % 0) (list a b c d e))) >> >> > It would be nicer to have a vector of vectors or a list of vectors at >> > the beginning, probably. >> >> > Cheers, >> > Stefan >> >> > -- >> > You received this message because you are subscribed to the Google >> > Groups "Clojure" group. >> > To post to this group, send email to clojure@googlegroups.com >> > Note that posts from new members are moderated - please be patient with >> > your first post. >> > To unsubscribe from this group, send email to >> > clojure+unsubscr...@googlegroups.com >> > For more options, visit this group at >> >http://groups.google.com/group/clojure?hl=en >> >> -- >> And what is good, Phaedrus, >> And what is not good— >> Need we ask anyone to tell us these things? > > -- > You received this message because you are subscribed to the Google > Groups "Clojure" group. > To post to this group, send email to clojure@googlegroups.com > Note that posts from new members are moderated - please be patient with your > first post. > To unsubscribe from this group, send email to > clojure+unsubscr...@googlegroups.com > For more options, visit this group at > http://groups.google.com/group/clojure?hl=en -- Omnem crede diem tibi diluxisse supremum. -- You received this message because you are subscribed to the Google Groups "Clojure" group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en
Re: Minimum value in a vector
Forgot to mention that i'm still calculating the minimum distance between the vectors, but my output isn't actually the minimum value. The output is the minimum value in terms of the vectors, if that makes sense. On Dec 2, 3:22 pm, Don wrote: > Thank you Stefan and Kevin. Awesome solutions that answer my > question. However I actually made a mistake in posing my question. > Let me attempt to ask my question again. > > I have 5 vectors as such: > a [2 4 6 7] > b [1 3 9 2] > c [2 4 5 6] > d [6 1 3 8] > e [4 8 2 1] > > and the output i want is this > > a1 [0 0 0 0] > b1 [1 0 0 0] > c1 [0 0 0 0] > d1 [0 1 0 0] > e1 [0 0 1 1] > > Now I'm not sure if it can be done in one swoop, or should be done in > a loop. I was thinking a loop, but I'm having trouble thinking about > it. > > I initially thought of creating a function that takes in 5 vectors and > returns a single vector. So the first time its called it would > return a1 [0 0 0 0] then call it again and return b1 [1 0 0 0] etc... > I know it will repeat calculations however I couldn't come up with > anything else. > > Thank you. > > On Dec 2, 2:55 pm, Kevin Downey wrote: > > > > > user=> (vec (map min [2 4 6 7] [1 3 9 2] [2 4 5 6] [6 1 3 8] [4 8 2 1])) > > [1 1 2 1] > > user=> > > > On Wed, Dec 2, 2009 at 2:53 PM, Stefan Kamphausen > > > wrote: > > > Hi, > > > > On Dec 2, 11:43 pm, Don wrote: > > >> I am having difficulty approaching this problem. I'm not sure if it > > >> can be done in one swoop, or requires a few steps. > > > >> I have 5 vectors as such: > > > >> a [2 4 6 7] > > >> b [1 3 9 2] > > >> c [2 4 5 6] > > >> d [6 1 3 8] > > >> e [4 8 2 1] > > >> And I want to take the minimum value at a given index between the > > >> vectors. Therefore, minimum value at index 0 would yield the value 1 > > >> from vector b. > > > > a quick shot would be > > > > (reduce min (map #(get % 0) (list a b c d e))) > > > > It would be nicer to have a vector of vectors or a list of vectors at > > > the beginning, probably. > > > > Cheers, > > > Stefan > > > > -- > > > You received this message because you are subscribed to the Google > > > Groups "Clojure" group. > > > To post to this group, send email to clojure@googlegroups.com > > > Note that posts from new members are moderated - please be patient with > > > your first post. > > > To unsubscribe from this group, send email to > > > clojure+unsubscr...@googlegroups.com > > > For more options, visit this group at > > >http://groups.google.com/group/clojure?hl=en > > > -- > > And what is good, Phaedrus, > > And what is not good— > > Need we ask anyone to tell us these things? -- You received this message because you are subscribed to the Google Groups "Clojure" group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en
Re: Minimum value in a vector
Thank you Stefan and Kevin. Awesome solutions that answer my question. However I actually made a mistake in posing my question. Let me attempt to ask my question again. I have 5 vectors as such: a [2 4 6 7] b [1 3 9 2] c [2 4 5 6] d [6 1 3 8] e [4 8 2 1] and the output i want is this a1 [0 0 0 0] b1 [1 0 0 0] c1 [0 0 0 0] d1 [0 1 0 0] e1 [0 0 1 1] Now I'm not sure if it can be done in one swoop, or should be done in a loop. I was thinking a loop, but I'm having trouble thinking about it. I initially thought of creating a function that takes in 5 vectors and returns a single vector. So the first time its called it would return a1 [0 0 0 0] then call it again and return b1 [1 0 0 0] etc... I know it will repeat calculations however I couldn't come up with anything else. Thank you. On Dec 2, 2:55 pm, Kevin Downey wrote: > user=> (vec (map min [2 4 6 7] [1 3 9 2] [2 4 5 6] [6 1 3 8] [4 8 2 1])) > [1 1 2 1] > user=> > > On Wed, Dec 2, 2009 at 2:53 PM, Stefan Kamphausen > > > > > > wrote: > > Hi, > > > On Dec 2, 11:43 pm, Don wrote: > >> I am having difficulty approaching this problem. I'm not sure if it > >> can be done in one swoop, or requires a few steps. > > >> I have 5 vectors as such: > > >> a [2 4 6 7] > >> b [1 3 9 2] > >> c [2 4 5 6] > >> d [6 1 3 8] > >> e [4 8 2 1] > >> And I want to take the minimum value at a given index between the > >> vectors. Therefore, minimum value at index 0 would yield the value 1 > >> from vector b. > > > a quick shot would be > > > (reduce min (map #(get % 0) (list a b c d e))) > > > It would be nicer to have a vector of vectors or a list of vectors at > > the beginning, probably. > > > Cheers, > > Stefan > > > -- > > You received this message because you are subscribed to the Google > > Groups "Clojure" group. > > To post to this group, send email to clojure@googlegroups.com > > Note that posts from new members are moderated - please be patient with > > your first post. > > To unsubscribe from this group, send email to > > clojure+unsubscr...@googlegroups.com > > For more options, visit this group at > >http://groups.google.com/group/clojure?hl=en > > -- > And what is good, Phaedrus, > And what is not good— > Need we ask anyone to tell us these things? -- You received this message because you are subscribed to the Google Groups "Clojure" group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en
Re: Minimum value in a vector
user=> (vec (map min [2 4 6 7] [1 3 9 2] [2 4 5 6] [6 1 3 8] [4 8 2 1])) [1 1 2 1] user=> On Wed, Dec 2, 2009 at 2:53 PM, Stefan Kamphausen wrote: > Hi, > > On Dec 2, 11:43 pm, Don wrote: >> I am having difficulty approaching this problem. I'm not sure if it >> can be done in one swoop, or requires a few steps. >> >> I have 5 vectors as such: >> >> a [2 4 6 7] >> b [1 3 9 2] >> c [2 4 5 6] >> d [6 1 3 8] >> e [4 8 2 1] >> And I want to take the minimum value at a given index between the >> vectors. Therefore, minimum value at index 0 would yield the value 1 >> from vector b. >> > > a quick shot would be > > (reduce min (map #(get % 0) (list a b c d e))) > > It would be nicer to have a vector of vectors or a list of vectors at > the beginning, probably. > > Cheers, > Stefan > > -- > You received this message because you are subscribed to the Google > Groups "Clojure" group. > To post to this group, send email to clojure@googlegroups.com > Note that posts from new members are moderated - please be patient with your > first post. > To unsubscribe from this group, send email to > clojure+unsubscr...@googlegroups.com > For more options, visit this group at > http://groups.google.com/group/clojure?hl=en -- And what is good, Phaedrus, And what is not good— Need we ask anyone to tell us these things? -- You received this message because you are subscribed to the Google Groups "Clojure" group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en
Re: Minimum value in a vector
Hi, On Dec 2, 11:43 pm, Don wrote: > I am having difficulty approaching this problem. I'm not sure if it > can be done in one swoop, or requires a few steps. > > I have 5 vectors as such: > > a [2 4 6 7] > b [1 3 9 2] > c [2 4 5 6] > d [6 1 3 8] > e [4 8 2 1] > And I want to take the minimum value at a given index between the > vectors. Therefore, minimum value at index 0 would yield the value 1 > from vector b. > a quick shot would be (reduce min (map #(get % 0) (list a b c d e))) It would be nicer to have a vector of vectors or a list of vectors at the beginning, probably. Cheers, Stefan -- You received this message because you are subscribed to the Google Groups "Clojure" group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en
