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| #include<iostream> #include<stdlib.h> #include<time.h> using namespace std; #define MU 5 #define NU 6 #define Status int #define ElemType int #define ERROR 0 #define OK 1 #define MAXSIZE 12500 typedef struct { int i, j; ElemType e; }Triple; typedef struct { Triple data[MAXSIZE + 1]; int mu, nu, tu; }TSMatrix; Status CreateMatrix(TSMatrix &M) { int e, i, j, k = 1; M.mu = MU; M.nu = NU; srand((unsigned)time(NULL)); M.tu = rand() % 15; for(i=1;i<M.mu;i++) for (j = 1; j < M.nu; j++) { e = rand() % 30; if (e != 0) { M.data[k].i = i; M.data[k].j = j; M.data[k].e = e; k++; if (k == M.tu) break; } } return OK; } void print(TSMatrix M) { int k; printf("mu=%-2d, nu=%-2d, tu=%-2d", M.mu, M.nu, M.tu); printf("\n"); for (k = 1; k <= M.tu; k++) { printf("i=%-2d, j=%-2d, e=%-2d", M.data[k].i, M.data[k].j, M.data[k].e); printf("\n"); } } Status TransposeSMatrix(TSMatrix M, TSMatrix &T) { T.mu = M.nu; T.nu = M.mu; T.tu = M.tu; if (T.tu) { int q = 1; for(int col=1;col<=M.mu;++col) for (int p = 1; p <= M.tu; ++p) { if (M.data[p].j == col) { T.data[q].i = M.data[p].j; T.data[q].j = M.data[p].i; T.data[q].e = M.data[p].e; ++q; } } } return OK; } Status FastTransposeSMatrix(TSMatrix M, TSMatrix &T) { T.mu = M.nu; T.nu = M.mu; T.tu = M.tu; int col, t, q, p; int num[NU]; int cpot[NU]; if (T.tu) { for (col = 1; col <= M.nu; ++col) num[col] = 0; for (t = 1; t <= M.tu; ++t) ++num[M.data[t].j]; cpot[1] = 1; for (col = 2; col <= M.nu; ++col) cpot[col] = cpot[col - 1] + num[col - 1]; for (p = 1; p <= M.tu; ++p) { col = M.data[p].j; q = cpot[col]; T.data[q].i = M.data[p].j; T.data[q].j = M.data[p].i; T.data[q].e = M.data[p].e; ++cpot[col]; } } return OK; } void main() { TSMatrix M, T,R; CreateMatrix(M); TransposeSMatrix(M, T); printf("输出稀疏矩阵M:\n"); print(M); printf("输出转置矩阵T:\n"); print(T); cout << endl; FastTransposeSMatrix(M, R); printf("输出快速转置矩阵R:\n"); print(R); system("pause"); }
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