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1. 背景说明
为了节省存储空间，可以对这类矩阵进行压缩存储。所谓压缩存储是指：为多个值相同的元只分配一个存储空间，对零元不分配空间。
2. 示例代码
1)status.h
/* DataStructure 预定义常量和类型头文件 */
#include <string.h>#ifndef STATUS_H
#define STATUS_H#define NONE ""#define FILE_NAME(X) strrchr(X, '\\') ? strrchr(X,'\\') + 1 : X#define DEBUG#define CHECK_NULL(pointer) if (!(pointer)) { \printf("FuncName: %-15s Line: %-5d ErrorCode: %-3d\n", __func__, __LINE__, ERR_NULL_PTR); \return NULL; \
}#define CHECK_FALSE(value, ERR_CODE) if (!(value)) { \printf("FuncName: %-15s Line: %-5d ErrorCode: %-3d\n", __func__, __LINE__, ERR_CODE); \return FALSE; \
}#ifdef DEBUG
#define CHECK_RET(ret, FORMAT, ...) if (ret != RET_OK) { \printf("FileName: %-20s FuncName: %-15s Line: %-5d ErrorCode: %-3d" FORMAT "\n", FILE_NAME(__FILE__), __func__, __LINE__, ret, ##__VA_ARGS__); \return ret; \}
#else
#define CHECK_RET(ret, FORMAT, ...)
#endif#ifdef DEBUG
#define CHECK_VALUE(value, ERR_CODE, FORMAT, ...) if (value) { \printf("FileName: %-20s FuncName: %-15s Line: %-5d ErrorCode: %-3d" FORMAT "\n", FILE_NAME(__FILE__), __func__, __LINE__, ERR_CODE, ##__VA_ARGS__); \return ERR_CODE; \}
#else
#define CHECK_VALUE(value, ERR_CODE, FORMAT, ...)
#endif/* 函数结果状态码 */
#define TRUE 1 /* 返回值为真 */
#define FALSE 0 /* 返回值为假 */
#define RET_OK 0 /* 返回值正确 */
#define ERR_MEMORY 2 /* 访问内存错 */
#define ERR_NULL_PTR 3 /* 空指针错误 */
#define ERR_MEMORY_ALLOCATE 4 /* 内存分配错 */
#define ERR_NULL_STACK 5 /* 栈元素为空 */
#define ERR_PARA 6 /* 函数参数错 */
#define ERR_OPEN_FILE 7 /* 打开文件错 */
#define ERR_NULL_QUEUE 8 /* 队列为空错 */
#define ERR_FULL_QUEUE 9 /* 队列为满错 */
#define ERR_NOT_FOUND 10 /* 表项不存在 */
typedef int Status; /* Status 是函数的类型,其值是函数结果状态代码，如 RET_OK 等 */
typedef int Bollean; /* Boolean 是布尔类型,其值是 TRUE 或 FALSE */#endif // !STATUS_H2) tripleSparseMatrix.h
/* 稀疏矩阵的三元组顺序表存储表示头文件 */#include "status.h"#define MAX_SIZE 100typedef int ElemType;typedef struct {int i;int j;ElemType e;
} Triple;typedef struct {Triple data[MAX_SIZE + 1];int rowNum;int colNum;int noneZeroNum;
} TSMatrix;/* 创建稀疏矩阵 *sMatrix */
Status CreateSMatrix(TSMatrix *sMatrix);/* 销毁稀疏矩阵 *sMatrix */
Status DestroySMatrix(TSMatrix *sMatrix);/* 按照矩阵形式输出 *sMatrisx */
Status PrintSMatrix(const TSMatrix *sMatrix);/* 由稀疏矩阵 *sMatrixA 复制得到 *sMatrixB */
Status CopySMatrix(const TSMatrix *sMatrixA, TSMatrix *sMatrixB);/* 求稀疏矩阵 *sMatrixA 和 *sMatrixB 的和矩阵 *sMatrixC */
Status AddSMatrix(const TSMatrix *sMatrixA, const TSMatrix *sMatrixB, TSMatrix *sMatrixC);/* 求稀疏矩阵 *sMatrixA 和 *sMatrixB 的差矩阵 *sMatrixC */
Status SubSMatrix(const TSMatrix *sMatrixA, TSMatrix *sMatrixB, TSMatrix *sMatrixC);/* 算法 5.1，求稀疏矩阵 *sMatrix 的转置矩阵 *sMatrixT */
Status TransposeSMatrix(const TSMatrix *sMatrix, TSMatrix *sMatrixT);/* 算法 5.2，快速求稀疏矩阵 *sMatrix 的转置矩阵 *sMatrixT */
Status FastTransposeSMatrix(const TSMatrix *sMatrix, TSMatrix *sMatrixT);/* 求稀疏矩阵 *sMatrixA 和 *sMatrixB 的乘积矩阵 *sMatrixC */
Status MultSMatrix(const TSMatrix *sMatrixA, const TSMatrix *sMatrixB, TSMatrix *sMatrixC);3) tripleSparseMatrix.c
/* 稀疏矩阵的三元组顺序表存储实现源文件 */#include "tripleSparseMatrix.h"
#include <stdio.h>
#include <stdlib.h>/* 创建稀疏矩阵 *sMatrix */
Status CreateSMatrix(TSMatrix *sMatrix)
{CHECK_VALUE(!sMatrix, ERR_NULL_PTR, NONE);printf("Please input the row, col, noneZeroElement of the matrix: ");scanf_s("%d%d%d", &(sMatrix->rowNum), &(sMatrix->colNum), &(sMatrix->noneZeroNum));CHECK_VALUE((sMatrix->rowNum < 1) || (sMatrix->colNum < 1) || (sMatrix->noneZeroNum < 0)|| (sMatrix->noneZeroNum > (sMatrix->rowNum * sMatrix->colNum)) || (sMatrix->noneZeroNum > MAX_SIZE),ERR_PARA, "rowNum = %d, colNum = %d, noneZeroNum = %d", sMatrix->rowNum, sMatrix->colNum, sMatrix->noneZeroNum);sMatrix->data[0].i = 0;int row, col;ElemType e;int i;for (i = 1; i <= sMatrix->noneZeroNum; ++i) {printf("Please input the row(1 ~ %d), col(1 ~ %d), and the value of %dth element: ", sMatrix->rowNum,sMatrix->colNum, i);scanf_s("%d%d%d", &row, &col, &e);CHECK_VALUE((row < 1) || (row > sMatrix->rowNum) || (col < 1) || (col > sMatrix->colNum) ||(row < sMatrix->data[i - 1].i) || ((row == sMatrix->data[i - 1].i) && (col <= sMatrix->data[i - 1].j)),ERR_PARA, "row = %d, rowNum = %d, col = %d, colNum = %d, lastRow = %d, lastCol = %d", row, sMatrix->rowNum,col, sMatrix->colNum, sMatrix->data[i - 1].i, sMatrix->data[i - 1].j);sMatrix->data[i].i = row;sMatrix->data[i].j = col;sMatrix->data[i].e = e;}return RET_OK;
}/* 销毁稀疏矩阵 *sMatrix */
Status DestroySMatrix(TSMatrix *sMatrix)
{CHECK_VALUE(!sMatrix, ERR_NULL_PTR, NONE);sMatrix->rowNum = sMatrix->colNum = sMatrix->noneZeroNum = 0;return RET_OK;
}/* 按照矩阵形式输出 *sMatrisx */
Status PrintSMatrix(const TSMatrix *sMatrix)
{CHECK_VALUE(!sMatrix, ERR_NULL_PTR, NONE);int count = 1;for (int i = 1; i <= sMatrix->rowNum; ++i) {for (int j = 1; j <= sMatrix->colNum; ++j) {if ((count <= sMatrix->noneZeroNum) && (sMatrix->data[count].i == i) && (sMatrix->data[count].j == j)) {printf("%-3d", sMatrix->data[count].e);++count;continue;}printf("%-3d", 0);}printf("\n");}return RET_OK;
}/* 由稀疏矩阵 *sMatrixA 复制得到 *sMatrixB */
Status CopySMatrix(const TSMatrix *sMatrixA, TSMatrix *sMatrixB)
{CHECK_VALUE(!sMatrixA || !sMatrixB, ERR_NULL_PTR, "sMatrixA = %p sMatrixB = %p", sMatrixA, sMatrixB);errno_t ret = memcpy_s(sMatrixB, sizeof(TSMatrix), sMatrixA, sizeof(TSMatrix));CHECK_RET(ret, NONE);return RET_OK;
}/* 返回 num1 和 num2 的大小比较结果 */
int Compare(int num1, int num2)
{return (num1 < num2) ? -1 : ((num1 == num2) ? 0 : 1);
}/* 求稀疏矩阵 *sMatrixA 和 *sMatrixB 的和矩阵 *sMatrixC */
Status AddSMatrix(const TSMatrix *sMatrixA, const TSMatrix *sMatrixB, TSMatrix *sMatrixC)
{CHECK_VALUE(!sMatrixA || !sMatrixB || !sMatrixC, ERR_NULL_PTR, "sMatrixA = %p, sMatrixB = %p, sMatrixC = %p",sMatrixA, sMatrixB, sMatrixC);CHECK_VALUE((sMatrixA->rowNum != sMatrixB->rowNum) || (sMatrixA->colNum != sMatrixB->colNum), ERR_PARA,"sMatrixA_rowNum = %d, sMatrixB_rowNum = %d, sMatrixA_colNum = %d, sMatrixB_colNum = %d", sMatrixA->rowNum,sMatrixB->rowNum, sMatrixA->colNum, sMatrixB->colNum);sMatrixC->rowNum = sMatrixA->rowNum;sMatrixC->colNum = sMatrixA->colNum;int noneZeroNumA = 1, noneZeroNumB = 1, noneZeroNumC = 0;errno_t ret;while ((noneZeroNumA <= sMatrixA->noneZeroNum) && (noneZeroNumB <= sMatrixB->noneZeroNum)) {switch (Compare(sMatrixA->data[noneZeroNumA].i, sMatrixB->data[noneZeroNumB].i)) {case -1:ret = memcpy_s(&(sMatrixC->data[++noneZeroNumC]), sizeof(Triple), &(sMatrixA->data[noneZeroNumA++]), sizeof(Triple));break;case 0:switch (Compare(sMatrixA->data[noneZeroNumA].j, sMatrixB->data[noneZeroNumB].j)) {case -1:ret = memcpy_s(&(sMatrixC->data[++noneZeroNumC]), sizeof(Triple), &(sMatrixA->data[noneZeroNumA++]), sizeof(Triple));break;case 0:ret = memcpy_s(&(sMatrixC->data[++noneZeroNumC]), sizeof(Triple), &(sMatrixA->data[noneZeroNumA++]), sizeof(Triple));sMatrixC->data[noneZeroNumC].e += sMatrixB->data[noneZeroNumB++].e;if (sMatrixC->data[noneZeroNumC].e == 0) {--noneZeroNumC;}break;case 1:ret = memcpy_s(&(sMatrixC->data[++noneZeroNumC]), sizeof(Triple), &(sMatrixB->data[noneZeroNumB++]), sizeof(Triple));break;}break;case 1:ret = memcpy_s(&(sMatrixC->data[++noneZeroNumC]), sizeof(Triple), &(sMatrixB->data[noneZeroNumB++]), sizeof(Triple));break;}CHECK_RET(ret, NONE);}while (noneZeroNumA <= sMatrixA->noneZeroNum) {ret |= memcpy_s(&(sMatrixC->data[++noneZeroNumC]), sizeof(Triple), &(sMatrixA->data[noneZeroNumA++]), sizeof(Triple));}while (noneZeroNumB <= sMatrixB->noneZeroNum) {ret |= memcpy_s(&(sMatrixC->data[++noneZeroNumC]), sizeof(Triple), &(sMatrixB->data[noneZeroNumB++]), sizeof(Triple));}CHECK_RET(ret, NONE);sMatrixC->noneZeroNum = noneZeroNumC;CHECK_VALUE(noneZeroNumC > MAX_SIZE, ERR_PARA, "noneZeroNumC = %d", noneZeroNumC);return RET_OK;
}/* 求稀疏矩阵 *sMatrixA 和 *sMatrixB 的差矩阵 *sMatrixC */
Status SubSMatrix(const TSMatrix *sMatrixA, TSMatrix *sMatrixB, TSMatrix *sMatrixC)
{CHECK_VALUE(!sMatrixA || !sMatrixB || !sMatrixC, ERR_NULL_PTR, "sMatrixA = %p, sMatrixB = %p, sMatrixC = %p",sMatrixA, sMatrixB, sMatrixC);CHECK_VALUE((sMatrixA->rowNum != sMatrixB->rowNum) || (sMatrixA->colNum != sMatrixB->colNum), ERR_PARA,"sMatrixA_rowNum = %d, sMatrixB_rowNum = %d, sMatrixA_colNum = %d, sMatrixB_colNum = %d", sMatrixA->rowNum,sMatrixB->rowNum, sMatrixA->colNum, sMatrixB->colNum);sMatrixC->rowNum = sMatrixA->rowNum;sMatrixC->colNum = sMatrixA->colNum;for (int i = 1; i <= sMatrixB->noneZeroNum; ++i) {sMatrixB->data[i].e *= -1;}Status ret = AddSMatrix(sMatrixA, sMatrixB, sMatrixC);CHECK_RET(ret, NONE);return RET_OK;
}/* 算法 5.1，求稀疏矩阵 *sMatrix 的转置矩阵 *sMatrixT */
Status TransposeSMatrix(const TSMatrix *sMatrix, TSMatrix *sMatrixT)
{CHECK_VALUE(!sMatrix || !sMatrixT, ERR_NULL_PTR, "sMatrix = %p sMatrixT = %p", sMatrix, sMatrixT);sMatrixT->rowNum = sMatrix->colNum;sMatrixT->colNum = sMatrix->rowNum;sMatrixT->noneZeroNum = sMatrix->noneZeroNum;if (sMatrixT->noneZeroNum == 0) {return RET_OK;}int noneZeroNumT = 1;for (int col = 1; col <= sMatrix->colNum; ++col) {for (int i = 1; i <= sMatrix->noneZeroNum; ++i) {if (sMatrix->data[i].j != col) {continue;}sMatrixT->data[noneZeroNumT].i = sMatrix->data[i].j;sMatrixT->data[noneZeroNumT].j = sMatrix->data[i].i;sMatrixT->data[noneZeroNumT].e = sMatrix->data[i].e;++noneZeroNumT;}}return RET_OK;
}/* 算法 5.2，快速求稀疏矩阵 *sMatrix 的转置矩阵 *sMatrixT */
Status FastTransposeSMatrix(const TSMatrix *sMatrix, TSMatrix *sMatrixT)
{CHECK_VALUE(!sMatrix || !sMatrixT, ERR_NULL_PTR, "sMatrix = %p sMatrixT = %p", sMatrix, sMatrixT);sMatrixT->rowNum = sMatrix->colNum;sMatrixT->colNum = sMatrix->rowNum;sMatrixT->noneZeroNum = sMatrix->noneZeroNum;if (sMatrixT->noneZeroNum == 0) {return RET_OK;}int *colNum = (int *)malloc(sizeof(int) * (unsigned long long)(sMatrix->colNum + 1));int *firstColNoneZero = (int *)malloc(sizeof(int) * (unsigned long long)(sMatrix->colNum + 1));for (int col = 1; col <= sMatrix->colNum; ++col) {colNum[col] = 0;}for (int i = 1; i <= sMatrix->noneZeroNum; ++i) {++colNum[sMatrix->data[i].j];}firstColNoneZero[1] = 1;for (int col = 2; col <= sMatrix->colNum; ++col) {firstColNoneZero[col] = firstColNoneZero[col - 1] + colNum[col - 1];}int col, order;for (int i = 1; i <= sMatrix->noneZeroNum; ++i) {col = sMatrix->data[i].j;order = firstColNoneZero[col];sMatrixT->data[order].i = sMatrix->data[i].j;sMatrixT->data[order].j = sMatrix->data[i].i;sMatrixT->data[order].e = sMatrix->data[i].e;++firstColNoneZero[col];}free(colNum);free(firstColNoneZero);return RET_OK;
}/* 求稀疏矩阵 *sMatrixA 和 *sMatrixB 的乘积矩阵 *sMatrixC */
Status MultSMatrix(const TSMatrix *sMatrixA, const TSMatrix *sMatrixB, TSMatrix *sMatrixC)
{CHECK_VALUE(!sMatrixA || !sMatrixB || !sMatrixC, ERR_NULL_PTR, "sMatrixA = %p, sMatrixB = %p, sMatrixC = %p",sMatrixA, sMatrixB, sMatrixC);CHECK_VALUE((sMatrixA->colNum != sMatrixB->rowNum), ERR_PARA, "sMatrixA_colNum = %d, sMatrixB_rowNum = %d",sMatrixA->colNum, sMatrixB->rowNum);TSMatrix tempMatrix = { 0 };tempMatrix.rowNum = sMatrixB->colNum;tempMatrix.colNum = sMatrixA->rowNum;tempMatrix.noneZeroNum = 0;ElemType *sMatrixARow = (ElemType *)malloc(sizeof(ElemType) * (unsigned long long)(sMatrixA->rowNum + 1));ElemType *sMatrixBCol = (ElemType *)malloc(sizeof(ElemType) * (unsigned long long)(sMatrixB->rowNum + 1));CHECK_VALUE(!sMatrixARow || !sMatrixBCol, ERR_MEMORY_ALLOCATE, "sMatrixARow = %p, sMatrixBCol = %p",sMatrixARow, sMatrixBCol);for (int i = 1; i <= sMatrixB->colNum; ++i) {for (int j = 1; j <= sMatrixA->rowNum; ++j) {sMatrixARow[j] = 0;}for (int j = 1; j <= sMatrixB->rowNum; ++j) {sMatrixBCol[j] = 0;}for (int j = 1; j <= sMatrixB->noneZeroNum; ++j) {if (sMatrixB->data[j].j == i) {sMatrixBCol[sMatrixB->data[j].i] = sMatrixB->data[j].e;}}for (int j = 1; j <= sMatrixA->noneZeroNum; ++j) {sMatrixARow[sMatrixA->data[j].i] += sMatrixA->data[j].e * sMatrixBCol[sMatrixA->data[j].j];}for (int j = 1; j <= sMatrixA->rowNum; ++j) {if (sMatrixARow[j] == 0) {continue;}tempMatrix.data[++tempMatrix.noneZeroNum].e = sMatrixARow[j];tempMatrix.data[tempMatrix.noneZeroNum].i = i;tempMatrix.data[tempMatrix.noneZeroNum].j = j;}}CHECK_VALUE(tempMatrix.noneZeroNum > MAX_SIZE, ERR_PARA, "tempMatrix.noneZeroNum = %d", tempMatrix.noneZeroNum);Status ret = TransposeSMatrix(&tempMatrix, sMatrixC);CHECK_RET(ret, NONE);ret = DestroySMatrix(&tempMatrix);CHECK_RET(ret, NONE);free(sMatrixARow);free(sMatrixBCol);return RET_OK;
}4) main.c
#include "tripleSparseMatrix.h"
#include <stdio.h>int main(void)
{TSMatrix sMatrixA, sMatrixB, sMatrixC, sMatrixCT, sMatrixBT;Status ret = CreateSMatrix(&sMatrixA);printf("sMatrixA:\n\n");ret |= PrintSMatrix(&sMatrixA);CHECK_RET(ret, NONE);ret = CopySMatrix(&sMatrixA, &sMatrixB);printf("\nsMatrixB:\n\n");ret |= PrintSMatrix(&sMatrixB);CHECK_RET(ret, NONE);ret = AddSMatrix(&sMatrixA, &sMatrixB, &sMatrixC);printf("\nsMatrixC:\n\n");ret |= PrintSMatrix(&sMatrixC);CHECK_RET(ret, NONE);ret = FastTransposeSMatrix(&sMatrixC, &sMatrixCT);printf("\nsMatrixCT:\n\n");ret |= PrintSMatrix(&sMatrixCT);CHECK_RET(ret, NONE);ret = TransposeSMatrix(&sMatrixB, &sMatrixBT);ret |= MultSMatrix(&sMatrixA, &sMatrixBT, &sMatrixCT);printf("\nsMatrixA * sMatrixBT = :\n\n");ret |= PrintSMatrix(&sMatrixCT);CHECK_RET(ret, NONE);ret |= DestroySMatrix(&sMatrixA);ret |= DestroySMatrix(&sMatrixC);ret |= DestroySMatrix(&sMatrixCT);CHECK_RET(ret, NONE);return 0;
}3. 输出结果
