Question

Can I please have an explanation for where the numbers "2" and "3" come from?

(b) (6 pts) Write, but DO NOT solve, a summation that describes the number of multiplications performed by the following code fragment, in terms of n weirdSum0 for (i = 19; i 〈 n + 292; i++) { weirdSum = weirdSum * 5-1*2 for (j 1-3; j < i + i + 19: j++) { weirdsum = weirdSum * n - j * 3 + i * j; Solution: n+291 2i+18 i-19

Answer 1

We want the number of multiplications performed.

Outer For Loop
weirdSum = weirdSum * 5 - i * 2;
In the above line 2 multiplications are performed
1. weirdSum * 5
2. i * 2

Inner For Loop
weirdSum = weirdSum * n - j * 3 + i * j;
In the above line 3 multiplications are performed
1. weirdSum * n
2. j * 3
3. i * j