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/* Original Matrix to Sparse Matrix*/
#include<stdio.h>
#include<stdlib.h>
void orgtosprs(int org[][20], int sparse[][3], int, int);
void sparsetooriginal(int sp[][3],int org[][20]);
int main() {
int org[20][20], sparse[20][3];
int row, col, i, j;
printf("\n\nEnter the Row and Column of the original matrix : ");
scanf("%d %d", & row, & col);
printf("\n\nEnter the values for original matrix : ");
for (i = 0; i < row; i++)
for (j = 0; j < col; j++)
scanf("%d", & org[i][j]);
orgtosprs(org, sparse, row, col);
printf("\nAfter converting in Sparse Matrix : \n");
for (i = 0; i < sparse[0][2] + 1; i++) {
for (j = 0; j < 3; j++)
printf("%d\t", sparse[i][j]);
printf("\n");
}
printf("\nAfter converting back to Original from Sparse : \n");
sparsetooriginal(sparse,org);
for(i=0; i<sparse[0][0]; i++)
{
for(j=0; j<sparse[0][1]; j++)
printf("%d\t",org[i][j]);
printf("\n");
}
}
void orgtosprs(int org[][20], int sparse[][3], int m, int n) {
int t = 1, i, j;
sparse[0][0] = m;
sparse[0][1] = n;
for (i = 0; i < m; i++) {
for (j = 0; j < n; j++) {
if (org[i][j] != 0) {
sparse[t][0] = i;
sparse[t][1] = j;
sparse[t][2] = org[i][j];
t++;
}
}
}
sparse[0][2] = t - 1;
}
void sparsetooriginal(int sp[][3],int org[][20])
{
int i,j,t;
for(i=0; i<sp[0][0]; i++)
for(j=0; j<sp[0][1]; j++)
org[i][j]=0;
for(i=1; i<=sp[0][2]; i++)
{
org[sp[i][0]][sp[i][1]]=sp[i][2];
}
}
Compiling Program...
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