# What is Julia's maxk(Matlab) that returns the indice of top K largest values?

**URL:** <https://discourse.julialang.org/t/what-is-julias-maxk-matlab-that-returns-the-indice-of-top-k-largest-values/14100>\
**Category:** General Usage\
**Tags:** sort, sortperm\
**Created:** [August 26, 2018, 10:48pm UTC](https://discourse.julialang.org/t/what-is-julias-maxk-matlab-that-returns-the-indice-of-top-k-largest-values/14100 "2018-08-26T22:48:09Z")\
**Posts on this page:** 1\
**Showing post:** 5

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**Author:** ![complexfilter](https://avatars.discourse-cdn.com/v4/letter/c/c68b51/32.png) [@complexfilter](https://discourse.julialang.org/u/complexfilter)\
**Post date:** [August 27, 2018, 1:17am UTC](https://discourse.julialang.org/t/what-is-julias-maxk-matlab-that-returns-the-indice-of-top-k-largest-values/14100/5 "2018-08-27T01:17:53Z")

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Thanks for the code. However, I found that maxk in Matlab is way faster(4.7 times in Matlab 2018a) than the maxk in Julia.

```julia
QQ=randn(1000,1);
tic;
for i=1:10000
[~,ind]=maxk(QQ,10);
end
toc;

```

and

```julia
tic();
for i=1:10000
ind1=maxk(Q,10);
end
toc();

```

Is it possible for the maxk in Julia to be as fast as that in Matlab?

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