LESSON 141 OF 348 · LOOPS & GLOBAL VARIABLES

Sum of Squares in Rust

Practice

Given a non-negative integer n, compute and return the sum of
1² + 2² + 3² + ... + n²

Example:

Input: n = 3

Output: 14

Explanation:
1² + 2² + 3² = 1 + 4 + 9 = 14

Hints:

Where should we store this sum as we compute it?

We can use a variable sum, initially equal to 0. We have to iterate through the numbers 1 to n. How can we do this?

Let's use a for loop and a variable i to iterate through the numbers 1 to n. What should we do inside this loop?

Inside the loop, all we should do is add i * i to sum.
When the loop terminates, the answer lies in sum.

STEP 1 OF 4

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Sum Of Squares in Rust