2016 Update

Task/Matrix-multiplication/Lua/matrix-multiplication-1.lua

@@ -0,0 +1,31 @@
+function MatMul( m1, m2 )
+    if #m1[1] ~= #m2 then       -- inner matrix-dimensions must agree
+        return nil
+    end
+
+    local res = {}
+
+    for i = 1, #m1 do
+        res[i] = {}
+        for j = 1, #m2[1] do
+            res[i][j] = 0
+            for k = 1, #m2 do
+                res[i][j] = res[i][j] + m1[i][k] * m2[k][j]
+            end
+        end
+    end
+
+    return res
+end
+
+-- Test for MatMul
+mat1 = { { 1, 2, 3 }, { 4, 5, 6 } }
+mat2 = { { 1, 2 }, { 3, 4 }, { 5, 6 } }
+erg = MatMul( mat1, mat2 )
+for i = 1, #erg do
+    for j = 1, #erg[1] do
+        io.write( erg[i][j] )
+        io.write("  ")
+    end
+    io.write("\n")
+end