Question

Write a function, factors, that takes an integer n, and returns a list of values that are the positive divisors of n. Note: 0 is not a divisor of any integer, 1 divides every number, and n divides itself.

Answer 1

Answer:

public int[] factors(int n)

{

int arr[]=new int[n];

int count=0;

for(int i=1;i<=n;i++)

if(n%i==0)

{

arr[count]=i;

count++;

}

return arr;

}

Explanation:

Factors are the numbers you multiply to get another number. For instance, factors of 15 are 3 and 5, because 3×5 = 15.

In the program , we have an array of length N to store the factors.

Since we don't know the number of factors of N, so we have taken size of upper bound N to store list of factors in the array arr.

Within the loop the number gets divide by Integers from 1 to that number until result is 0. If it is 0, that number is stored in array.