This example demonstrates sorting a list of natural numbers.
While!p median DO p : p1 while!q median DO q : q-1 IF p q resultis p t :!p!p :!q!q : t p, q : p1, q-1 repeat LET start valof LET v VEC 1000 FOR i 1 TO 1000 DO v!i : randno(1_000_000) quicksort(v.
@.2 ' this value is expanded later.Quicksort quicksor csect using quicksor, R13 base register B 72(R15) skip savearea DC ctr game for windows 7 17F'0' savearea STM R14,R12,12(R13) prolog ST R13,4(R15) " ST R15,8(R13) " LR R13,R15 " MVC A,A(1) a(1)1 MVC B,A(NN) b(1)hbound(t) L R6,F'1' k1 DO while(LTR, R6,NZ, R6) do while.Length / procs; my_start my_pid * count; my_total arraymy_start; for (my_i 1; my_i count; my_i) my_total arraymy_start my_i; /. .The first round here consists of comparing the elements of each sorted half with the element at the same index in the other sorted half; and for each pair, we will swap the numbers if the second number is less than the first.Letting T represent the amount of time that a single processor takes to solve this problem, we would hope to develop an algorithm that takes T / p time on a p-processor system.In order to facilitate its usage in mergesort later, this pseudocode is written imagining that only a subset of the processors contain the two arrays to be merged.More Works with : Freebasic Works with : Powerbasic for DOS Works with : QB64 Works with : QBasic This is specifically for integers, but can be modified for any data type by changing arr s type.Just as with P and NP we naturally ask what the relationship is between P and.
When there is just one active processor, we stop.
John River Maine, Quebec (Canada) element 36 before sort: Pocomoke River Maryland, Virginia element 37 before sort: Palmer River Massachusetts, Rhode Island and Providence Plantations element 38 before sort: Runnins River Massachusetts, Rhode Island and Providence Plantations element 39 before sort: Montreal River Michigan (upper.Even the simplified version, though, is more complex than what we want to study here.Aupper, alower alower, aupper return / Hoare suggests optimized sort-3 or sort-4 algorithms here, / but does not provide an algorithm.We're hoping we can perform this in O(log p) time.(Q: does Icon/Unicon has tail calling optimizations?) Note: This example relies on the supporting procedures 'sortop and 'demosort' in Bubble Sort.