Matrix multiplication: Difference between revisions

{#A.new {S.map {{lambda {:a :b :i} // loop on row:i

{#A.new {S.map {{lambda {:a :b :i :j} // loop on col:j

{+ {S.map {{lambda {:a :b :i :j :k} // sumloop ofon prod:k

{* {#A.get :k {#A.get :a :i} :ka}} // of a[i,k]*b[k,j]

{#A.get :j {#A.get :b :k} :jb}}} // and b[k,j]

} :a :b :i :j} {S.serie 0 {- {#A.length :b} 1}} }}

} :a :b :i} {S.serie 0 {- {#A.length {#A.get 0 :b 0}} 1}} }}

} :a :b} {S.serie 0 {- {#A.length :a} 1}} }

}}}

{def A {A.new {#A.new 51 62}

{#A.new 73 84}}} = [[1,2],[3,4],[5,6],[7,8]]

{def B {#.new {#A.new 1 25 36}

{#A.new 47 5 68}}} = [[1,2,3],[4,5,6]]

-> [[ 9,12,15],