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void productArray(int arr[], int n)
- parwej.rashid6 March 04, 2015{
int i, temp = 1;
/* Allocate memory for the product array */
int *prod = (int *)malloc(sizeof(int)*n);
/* Initialize the product array as 1 */
memset(prod, 1, n);
/* In this loop, temp variable contains product of
elements on left side excluding arr[i] */
for(i=0; i<n; i++)
{
prod[i] = temp;
temp *= arr[i];
}
/* Initialize temp to 1 for product on right side */
temp = 1;
/* In this loop, temp variable contains product of
elements on right side excluding arr[i] */
for(i= n-1; i>=0; i--)
{
prod[i] *= temp;
temp *= arr[i];
}
/* print the constructed prod array */
for (i=0; i<n; i++)
printf("%d ", prod[i]);
return;
}
Time Complexity: O(n)
Space Complexity: O(n)
Auxiliary Space: O(1)