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c++ Programming Glossary: pivothttp://stackoverflow.com/questions/15398855/using-vectors-with-qsort size_t partition vector int vi size_t low size_t high int pivot vi high int bottom low 1 int top high bool notdone true while.. 1 if bottom top notdone false break if vi bottom pivot vi top vi bottom break while notdone top top 1 if top.. top top 1 if top bottom notdone false break if vi top pivot vi bottom vi top break vi top pivot return top void print_vec..
STL priority queue and overloading with pointers http://stackoverflow.com/questions/15646451/stl-priority-queue-and-overloading-with-pointers be used #include queue #include iostream void foo int pivot my_comparator mc pivot std priority_queue int std deque int.. #include iostream void foo int pivot my_comparator mc pivot std priority_queue int std deque int my_comparator pq mc pq.push..
Rotating a point about another point (2D) http://stackoverflow.com/questions/2259476/rotating-a-point-about-another-point-2d this question Oh that's easy.. first subtract the pivot point cx cy then rotate it then add the point again. untested..
So can unique_ptr be used safely in stl collections? http://stackoverflow.com/questions/2876641/so-can-unique-ptr-be-used-safely-in-stl-collections algorithm is doing internally and maybe making internal pivot copies and the like thus ripping away ownership from the auto_ptr.. not think unique_ptrs could be copied. Does this mean a pivot value cannot be taken so the sort is less efficient Or is this.. cannot be taken so the sort is less efficient Or is this pivot actually a move which in fact is as dangerous as the collection..
Fast Algorithm for computing percentiles to remove outliers http://stackoverflow.com/questions/3779763/fast-algorithm-for-computing-percentiles-to-remove-outliers k int startI int endI while true Assume startI k endI int pivotI startI endI 2 arbitrary but good if sorted int splitI partition.. but good if sorted int splitI partition list startI endI pivotI if k splitI endI splitI else if k splitI startI splitI 1 else.. k static int partition double list int startI int endI int pivotI double pivotValue list pivotI list pivotI list startI list..
Filling an array with random numbers from 1 to 10^10 in C or C++ http://stackoverflow.com/questions/4700901/filling-an-array-with-random-numbers-from-1-to-1010-in-c-or-c swap int x int y int temp temp x x y y temp int choose_pivot int i int j return i j 2 Print array void printarr int arr int.. int find1 int arr int left int right int k int i j pivot if left right return arr left else i left j right 1 pivot arr.. pivot if left right return arr left else i left j right 1 pivot arr left do do i i 1 while arr i pivot do j j 1 while arr..
Implement Quick sort algorithm with partition of 3 elements, http://stackoverflow.com/questions/5596403/implement-quick-sort-algorithm-with-partition-of-3-elements partition of 3 elements almost certainly means choose the pivot element by picking the median of the first middle and last elements..
Weird XOR swap behavior while zeroing out data http://stackoverflow.com/questions/5785108/weird-xor-swap-behavior-while-zeroing-out-data b endl endl void zqsort int a int len if len 1 return int pivot av3index a 0 len 2 len 1 swap a pivot a 0 int i 1 j len 1 while.. if len 1 return int pivot av3index a 0 len 2 len 1 swap a pivot a 0 int i 1 j len 1 while i j if a i a 0 while i j a j a 0..
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