add tests for quick_sort
add tests for quick_sort

Gadal/sympy,Sumith1896/sympy,beni55/sympy,abhiii5459/sympy,kmacinnis/sympy,amitjamadagni/sympy,cswiercz/sympy,oliverlee/sympy,cccfran/sympy,meghana1995/sympy,souravsingh/sympy,abloomston/sympy,maniteja123/sympy,mafiya69/sympy,AunShiLord/sympy,MechCoder/sympy,aktech/sympy,dqnykamp/sympy,Titan-C/sympy,jerli/sympy,wyom/sympy,jerli/sympy,toolforger/sympy,lindsayad/sympy,cccfran/sympy,atreyv/sympy,yashsharan/sympy,Davidjohnwilson/sympy,Curious72/sympy,moble/sympy,jerli/sympy,jamesblunt/sympy,drufat/sympy,MridulS/sympy,jamesblunt/sympy,ahhda/sympy,sampadsaha5/sympy,MridulS/sympy,postvakje/sympy,mcdaniel67/sympy,toolforger/sympy,bukzor/sympy,vipulroxx/sympy,atsao72/sympy,Designist/sympy,Curious72/sympy,saurabhjn76/sympy,lindsayad/sympy,Titan-C/sympy,sahilshekhawat/sympy,wanglongqi/sympy,skidzo/sympy,skidzo/sympy,iamutkarshtiwari/sympy,iamutkarshtiwari/sympy,kumarkrishna/sympy,Designist/sympy,farhaanbukhsh/sympy,liangjiaxing/sympy,shipci/sympy,yukoba/sympy,ga7g08/sympy,grevutiu-gabriel/sympy,lindsayad/sympy,Arafatk/sympy,kevalds51/sympy,pbrady/sympy,emon10005/sympy,AkademieOlympia/sympy,souravsingh/sympy,mafiya69/sympy,vipulroxx/sympy,sahmed95/sympy,emon10005/sympy,oliverlee/sympy,Vishluck/sympy,Shaswat27/sympy,maniteja123/sympy,VaibhavAgarwalVA/sympy,moble/sympy,aktech/sympy,rahuldan/sympy,meghana1995/sympy,garvitr/sympy,yukoba/sympy,shipci/sympy,Mitchkoens/sympy,cswiercz/sympy,AunShiLord/sympy,lidavidm/sympy,madan96/sympy,kmacinnis/sympy,wyom/sympy,kevalds51/sympy,ahhda/sympy,Vishluck/sympy,abhiii5459/sympy,wanglongqi/sympy,pbrady/sympy,ga7g08/sympy,madan96/sympy,jaimahajan1997/sympy,kevalds51/sympy,rahuldan/sympy,kmacinnis/sympy,AunShiLord/sympy,wyom/sympy,AkademieOlympia/sympy,kaichogami/sympy,VaibhavAgarwalVA/sympy,cccfran/sympy,atsao72/sympy,sahilshekhawat/sympy,debugger22/sympy,kaichogami/sympy,jbbskinny/sympy,MechCoder/sympy,meghana1995/sympy,debugger22/sympy,skidzo/sympy,abloomston/sympy,amitjamadagni/sympy,asm666/sympy,yashsharan/sympy,MridulS/sympy,jaimahajan1997/sympy,drufat/sympy,hargup/sympy,ga7g08/sympy,Arafatk/sympy,beni55/sympy,Shaswat27/sympy,cswiercz/sympy,atreyv/sympy,Mitchkoens/sympy,moble/sympy,farhaanbukhsh/sympy,hargup/sympy,garvitr/sympy,Arafatk/sympy,ChristinaZografou/sympy,rahuldan/sympy,sunny94/temp,asm666/sympy,toolforger/sympy,grevutiu-gabriel/sympy,chaffra/sympy,Davidjohnwilson/sympy,chaffra/sympy,ChristinaZografou/sympy,emon10005/sympy,AkademieOlympia/sympy,kaichogami/sympy,oliverlee/sympy,lidavidm/sympy,ChristinaZografou/sympy,sahmed95/sympy,liangjiaxing/sympy,sampadsaha5/sympy,hrashk/sympy,sahilshekhawat/sympy,hrashk/sympy,bukzor/sympy,Curious72/sympy,sampadsaha5/sympy,sunny94/temp,iamutkarshtiwari/sympy,sahmed95/sympy,Gadal/sympy,shikil/sympy,grevutiu-gabriel/sympy,saurabhjn76/sympy,Mitchkoens/sympy,sunny94/temp,diofant/diofant,ahhda/sympy,souravsingh/sympy,liangjiaxing/sympy,VaibhavAgarwalVA/sympy,Vishluck/sympy,chaffra/sympy,hargup/sympy,Gadal/sympy,shikil/sympy,saurabhjn76/sympy,pandeyadarsh/sympy,asm666/sympy,kaushik94/sympy,madan96/sympy,bukzor/sympy,garvitr/sympy,shipci/sympy,skirpichev/omg,beni55/sympy,mafiya69/sympy,Shaswat27/sympy,drufat/sympy,Designist/sympy,jbbskinny/sympy,Sumith1896/sympy,jamesblunt/sympy,hrashk/sympy,MechCoder/sympy,atsao72/sympy,Titan-C/sympy,kumarkrishna/sympy,Sumith1896/sympy,maniteja123/sympy,vipulroxx/sympy,kaushik94/sympy,postvakje/sympy,abloomston/sympy,shikil/sympy,yashsharan/sympy,pbrady/sympy,pandeyadarsh/sympy,atreyv/sympy,kumarkrishna/sympy,jaimahajan1997/sympy,farhaanbukhsh/sympy,yukoba/sympy,dqnykamp/sympy,jbbskinny/sympy,lidavidm/sympy,mcdaniel67/sympy,pandeyadarsh/sympy,wanglongqi/sympy,kaushik94/sympy,abhiii5459/sympy,aktech/sympy,mcdaniel67/sympy,debugger22/sympy,Davidjohnwilson/sympy,dqnykamp/sympy,postvakje/sympy