目前,我正在尝试使用链接节点来表示矩阵。我的代码工作正常,但我不确定是否有可能以表格形式表示我的矩阵而不是(x,y)= value 我想表示它(由零元素和非元素组成)零元素。)
1 2 3
0 5 0
7 8 9
下面是矩阵中链接节点的代码,我的程序将读取用户的行,列和值并打印出来。
#include <stdio.h>
#include <stdlib.h>
typedef struct node
{
int column;
int value;
int row;
struct node *next;
} element;
void Init(element *x[])
{
int i;
for (i = 0; i < 3; i++) x[i] = NULL;
}
void Insert(element *x[], int row, int column, int value)
{
int r = row;
element *p;
element *new = malloc(sizeof(element));
new->row = row;
new->column = column;
new->value = value;
if (x[r] == NULL)
{
x[r] = new;
new->next = NULL;
}
else
{
p = x[r];
if (new->column < p->column)
{
new->next = p;
x[r] = new;
}
else if (new->column > p->column)
{
while (p->next != NULL && p->next->column < new->column)
{
p = p->next;
}
new->next = p->next;
p->next = new;
}
else printf("An element already exists there!!\n");
}
}
void Printout(element *x[])
{
int i, test = 0;
element *temp;
for (i = 0; i < 3; i++)
{
temp = x[i];
while (temp != NULL)
{
printf("Element position (%d,%d) = %d\n", i, temp->column, temp->value);
test = 1;
temp = temp->next;
}
}
if (test == 0) printf("This matrix is empty!!\n");
}
int main(int argc, const char * argv[])
{
int choice, column, row, value, number;
element *a[3], *b[3], *sum[3];
Init(a); Init(b); Init(sum);
do
{
printf("\n***\tADDING SPARSE MATRICES\t***\n");
printf("\n 1.) Insert in A");
printf("\n 2.) Insert in B");
printf("\n 3.) Printout both");
printf("\n 0.) EXIT");
printf("\nChoose ---------> ");
scanf("%d", &choice);
switch (choice)
{
case 1: /*Insert in A */
do
{
printf("Enter row -> ");
scanf("%d", &row);
} while (row < 0 || row > 3);
do
{
printf("Enter column -> ");
scanf("%d", &column);
} while (column < 0);
printf("Enter value -> ");
scanf("%d", &value);
Insert(a, row, column, value);
break;
case 2: /*Insert in B */
do
{
printf("Enter row -> ");
scanf("%d", &row);
} while (row < 0 || row > 2);
do
{
printf("Enter column -> ");
scanf("%d", &column);
} while (column < 0);
printf("Enter value -> ");
scanf("%d", &value);
Insert(b, row, column, value);
break;
case 3: /* Printout A & B */
printf("\n::::::: MATRIX A :> \n\n");
Printout(a);
printf("\n::::::: MATRIX B :> \n\n");
Printout(b);
break;
default:
printf("\nWRONG CHOICE");
}
} while (choice != 0);
return 0;
}
我需要有人来启发我。
答案 0 :(得分:0)
首先,代码需要找出矩阵的width
。这可以通过扫描所有元素来找到具有最大column
的元素来完成。矩阵width
是最大的column
加一。
然后,要打印矩阵中的每一行,请打印零,直到达到正确的column
。然后在元素中打印值,并移动到下一个元素。打印完所有元素后,打印其他零,直到达到width
。
void Printout(element *x[])
{
// find the width of the matrix
int width = -1;
for (int row = 0; row < 3; row++)
{
for (element *node = x[row]; node != NULL; node = node->next)
if (node->column > width)
width = node->column;
}
width++; // width is max column plus one
// print each row of the matrix
for (int row = 0; row < 3; row++)
{
int col = 0;
for (element *node = x[row]; node != NULL; node = node->next)
{
for (; col < node->column; col++) // print zeros until the column is reached
printf("0 ");
printf("%d ", node->value); // print the value for the current element
col = node->column + 1;
}
for (; col < width; col++) // print zeros until the width is reached
printf("0 ");
printf("\n");
}
}