续写下列代码#include <iostream> #include <stdio.h> #include <malloc.h> #define EQ(a,b) ((a)==(b)) #define LT(a,b) ((a)<(b)) #define LQ(a,b) ((a)<=(b)) typedef int Elemtype; typedef int KeyType; using namespace std; typedef struct { KeyType key; } SElemtype; typedef struct { SElemtype *elem; int length; } SStable; void creatSStable(SStable &T) { int i; // cout <<"请输入顺序表的长度:"; cin >>T.length; // cout<<"请输入顺序表的数据：" ; T.elem=(SElemtype*)malloc((T.length+1)*sizeof(KeyType)); for (i=1; i<=T.length; i++) cin >>T.elem[i].key; } /////////////////////////4)实现冒泡排序算法。 void BubbleSort(SStable &L) {

下面是续写的代码：

void BubbleSort(SStable &L) {
for (int i = 1; i < L.length; i++) {
for (int j = L.length; j > i; j--) {
if (LT(L.elem[j].key, L.elem[j-1].key)) {
SElemtype temp = L.elem[j];
L.elem[j] = L.elem[j-1];
L.elem[j-1] = temp;
}
}
}
}

冒泡排序算法的基本思想是：从第一个元素开始，依次比较相邻的两个元素，如果它们的顺序不正确，则交换它们的位置。这样一轮比较下来，最大的元素就会“冒泡”到序列的末尾。然后再从第一个元素开始，依次比较相邻的两个元素，重复上述过程，直到所有的元素都排好序为止。

相关问题

续写下列代码 #include <iostream> #include <stdio.h> #include <malloc.h> #define EQ(a,b) ((a)==(b)) #define LT(a,b) ((a)<(b)) #define LQ(a,b) ((a)<=(b)) typedef int Elemtype; typedef int KeyType; using namespace std; typedef struct { KeyType key; } SElemtype; typedef struct { SElemtype *elem; int length; } SStable; void creatSStable(SStable &T) { int i; // cout <<"请输入顺序表的长度:"; cin >>T.length; // cout<<"请输入顺序表的数据：" ; T.elem=(SElemtype*)malloc((T.length+1)*sizeof(KeyType)); for (i=1; i<=T.length; i++) cin >>T.elem[i].key; } /////////////////////////3)实现直接插入排序算法。 void InsertSort (SStable &L) {

int i, j;
for (i = 2; i <= L.length; i++) {
if (LT(L.elem[i].key, L.elem[i - 1].key)) {
L.elem[0] = L.elem[i];
L.elem[i] = L.elem[i - 1];
for (j = i - 2; LT(L.elem[0].key, L.elem[j].key); j--) {
L.elem[j + 1] = L.elem[j];
}
L.elem[j + 1] = L.elem[0];
}
}
}

int main() {
SStable T;
creatSStable(T);
InsertSort(T);
cout << "排序后的结果为：" << endl;
for (int i = 1; i <= T.length; i++) {
cout << T.elem[i].key << " ";
}
cout << endl;
return 0;
}

#include <assert.h> #include <stdio.h> #include <stdlib.h> #include <string.h> #include <math.h> #include <iostream> // Include CUDA runtime and CUFFT #include <cuda_runtime.h> #include <cufft.h> #include <ctime> using namespace std; // Helper functions for CUDA #include "device_launch_parameters.h" #define pi 3.1415926535 #define LENGTH 1048576 //signal sampling points int main() { cufftComplex* CompData = (cufftComplex*)malloc(LENGTH * sizeof(cufftComplex));//allocate memory for the data in host int i; for (i = 0; i < LENGTH; i++) { CompData[i].x = rand() % 1000; CompData[i].y = rand() % 1000; } clock_t start, finish; double duration; cufftComplex* d_fftData; cudaMalloc((void**)&d_fftData, LENGTH * sizeof(cufftComplex));// allocate memory for the data in device cudaMemcpy(d_fftData, CompData, LENGTH * sizeof(cufftComplex), cudaMemcpyHostToDevice);// copy data from host to device start = clock(); cufftHandle plan;// cuda library function handle cufftPlan1d(&plan, LENGTH, CUFFT_C2C, 1);//declaration cufftExecC2C(plan, (cufftComplex*)d_fftData, (cufftComplex*)d_fftData, CUFFT_FORWARD);//execute cudaDeviceSynchronize();//wait to be done finish = clock(); cudaMemcpy(CompData, d_fftData, LENGTH * sizeof(cufftComplex), cudaMemcpyDeviceToHost);// copy the result from device to host duration = (double)(finish - start) / (CLOCKS_PER_SEC); cout << "程序运行花费的时间为" << duration << "s" << endl; cufftDestroy(plan); free(CompData); cudaFree(d_fftData); }

这段代码使用了CUDA库来进行快速傅里叶变换（FFT）。它首先在主机上为数据分配内存，然后随机生成一些复数数据。然后，它在设备上为数据分配内存，并将数据从主机复制到设备。接着，它创建了一个CUFFT句柄，用于调用CUDA库中的FFT函数，执行FFT变换，并将结果从设备复制回主机。最后，它释放了内存并销毁了CUFFT句柄。程序输出了在计算FFT的过程中所花费的时间。