Peeping into Julia Dictionaries and using them in problem solving

Julia dictionaries are powerful mapping data structures.we here deal with two problems and using dictionaries.



1)Finding cube root of a no without using inbuilt cbrt() function i.e purely written in Julia

Here we see how to use a Julia dictionary and also map function


Solution:
function cubethRoot(n)
           d = factor(n)
           k,v=keys(d),values(d)
           fact = int([int(m) for m in v][1]/3)
           mykeys=[int(m) for m in k]
           res = map(x->x^fact,mykeys)
    prod(res)
end
@time cubeRoot(512)

2)Factorise from beginning to a given no

factor() is a julia inbuilt which factorises a no and returns a dictionary


Solution:
function showfactor(n)
           for i in 1:n
               d=factor(i)
               println("factors for $i")
               for k in d
                   print("$(k[1])^$(k[2])\t")
               end
               println('\n')
           end
       end
println("Enter a no to which factors to be printed")
m = int(rstrip(readline(STDIN)))
@time showfactor(m)



@time macro is optional to show efficiency of Julia function.