Quicksort: copy twice instead of scan-scatter

[tkf]

[codecov[bot]]

Codecov Report

Merging #187 (5dd6143) into master (f8fa366) will decrease coverage by 2.39%. The diff coverage is 60.00%.

@@            Coverage Diff             @@
##           master     #187      +/-   ##
==========================================
- Coverage   73.90%   71.50%   -2.40%     
==========================================
  Files          11       11              
  Lines         571      537      -34     
==========================================
- Hits          422      384      -38     
- Misses        149      153       +4     

Impacted Files	Coverage Δ
src/utils.jl	64.28% <0.00%> (-0.94%)	:arrow_down:
src/quicksort.jl	63.55% <60.71%> (-10.30%)	:arrow_down:

---

Continue to review full report at Codecov.

Legend - Click here to learn more Δ = absolute <relative> (impact), ø = not affected, ? = missing data Powered by Codecov. Last update f8fa366...5dd6143. Read the comment docs.