text: #include <algs4/QuickX.hpp>
  #include <algs4/StdIn.h>
  #include <algs4/StdRandom.h>
  
  #include <cassert>
  
  // QuickX_test < words3.txt
  
  int main(int argc, const char *argv[]) {
      using namespace algs4;
  
      auto a = StdIn::readAllStrings();
      StdRandom::shuffle(a);
  
      QuickX::sort(a);
  
      assert(QuickX::isSorted(a));
      QuickX::show(a);
  
      return 0;
  }
  