标签:奇偶 arr include const temp int NUM OpenMP 排序
代码:
#include <omp.h>
#include <iostream>
#include <cstdlib>
#include <ctime>
using namespace std;
const int NUM = 8000;
const int MAX = 1000000;
const int MIN = 0;
const int NUM_THREADS = 8;
int arr[NUM];
int main() {
cout << "Odd-even transportion sort start..." << endl;
cout << "Generate random data... ";
memset(arr, 0, NUM * sizeof(arr[0]));
srand(time(NULL));
omp_set_num_threads(NUM_THREADS);
#pragma omp parallel for
for (int i = 0; i < NUM; i++) {
arr[i] = MIN + rand() % (MAX - MIN);
}
cout << "Done." << endl;
cout << "Sorting... ";
for (int i = 0; i < NUM; i++) {
if (i % 2 == 0) {
#pragma omp parallel for
for (int j = 0; j < NUM - 1; j += 2) {
if (arr[j] > arr[j + 1]) {
int temp = arr[j];
arr[j] = arr[j + 1];
arr[j + 1] = temp;
}
}
} else {
#pragma omp parallel for
for (int j = 1; j < NUM - 1; j += 2) {
if (arr[j] > arr[j + 1]) {
int temp = arr[j];
arr[j] = arr[j + 1];
arr[j + 1] = temp;
}
}
}
}
cout << "Done." << endl;
cout << "Result:" << endl;
int counter = 1;
int row = 20;
for (int i = 0; i < NUM; i++,counter++) {
cout << arr[i] << " ";
if (counter % row == 0) cout << endl;
}
}
截图:
标签:奇偶,arr,include,const,temp,int,NUM,OpenMP,排序 来源: https://www.cnblogs.com/justsong/p/12219723.html
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