#include <iostream> using namespace std; #include <algorithm> #include <iostream> #define SIZE 60000 const int d = 19; //Всплытие void siftup(int *a, int i){ int p = (i - 1) / d; while((i != 0) && (a[p] > a[i])){ std::swap(a[i], a[p]); i = p; p = (i - 1) / d; } } //n - длина массива int min_child(int *a, int i, int n){ if(i*d + 1 >= n) return 0; else{ int s = i*d + 1; int min_key = a[s]; int last = (i + 1)*d; if(last >= n) last = n - 1; for(int j = s+1; j <= last; j++){ if(min_key > a[j]){ min_key = a[j]; s = j; } return s; } } } int min_child2(int *a, int i, int n){ int minchild = 0; std::cout << "start minchild2" << std::endl; if(i*d + 1 > n) return 0; else{ int first_child = i*d + 1; int last_child = std::min((1 + i)*d - 1, n); int min_key = a[first_child]; std::cout << "else minchild2" << std::endl; for(int i = first_child; i <= last_child; i++) if(a[i] > min_key){ min_key = a[i]; minchild = i; std::cout << "for loop minchild2" << std::endl; } std::cout << "return minchild2" << std::endl; return minchild; } } //Погружение void siftdown(int *a, int i, int n){ int s = min_child2(a, i, n); std::cout << "min_child called" << std::endl; while((s != 0) && (a[i] > a[s])){ std::cout << "while loop" << std::endl; std::swap(a[i], a[s]); i = s; s = min_child2(a, s, n); } } //Преобразование массива в кучу void build_dheap(int *a, int n){ for(int i = (n - 1)/*/d*/; i >= 0; i--) siftdown(a, i, n); std::cout << "after siftdown" << std::endl; } int main() { int a[SIZE]; for(int i = 0; i < SIZE; i++) a[i] = i % 19; build_dheap(a, SIZE); return 0; }
Standard input is empty
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