find an array a [i] = i partition algorithm, similar dichotomy in the algorithm

Packet : 57578873a[i]=i.rar filelist
a[i]=i\Cpp1.cpp
a[i]=i\Cpp1.dsp
a[i]=i\Debug
a[i]=i\Cpp1.ncb
a[i]=i\Cpp1.plg
a[i]=i\Cpp1.opt
a[i]=i\Cpp1.dsw
a[i]=i

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