1.9 KiB
1.9 KiB
id | title | challengeType |
---|---|---|
5a23c84252665b21eecc8040 | Sum multiples of 3 and 5 | 5 |
Description
Instructions
Tests
tests:
- text: <code>sumMults</code> should be a function.
testString: assert(typeof sumMults == 'function', '<code>sumMults</code> should be a function.');
- text: <code>sumMults(10)</code> should return a number.
testString: assert(typeof sumMults(10) == 'number', '<code>sumMults(10)</code> should return a number.');
- text: <code>sumMults(10)</code> should return <code>23</code>.
testString: assert.equal(sumMults(10), 23, '<code>sumMults(10)</code> should return <code>23</code>.');
- text: <code>sumMults(100)</code> should return <code>2318</code>.
testString: assert.equal(sumMults(100), 2318, '<code>sumMults(100)</code> should return <code>2318</code>.');
- text: <code>sumMults(1000)</code> should return <code>233168</code>.
testString: assert.equal(sumMults(1000), 233168, '<code>sumMults(1000)</code> should return <code>233168</code>.');
- text: <code>sumMults(10000)</code> should return <code>23331668</code>.
testString: assert.equal(sumMults(10000), 23331668, '<code>sumMults(10000)</code> should return <code>23331668</code>.');
- text: <code>sumMults(100000)</code> should return <code>2333316668</code>.
testString: assert.equal(sumMults(100000), 2333316668, '<code>sumMults(100000)</code> should return <code>2333316668</code>.');
Challenge Seed
function sumMults (n) {
// Good luck!
}
Solution
function sumMults (n) {
var sum = 0;
for (var i = 1; i < n; i++) {
if (i % 3 == 0 || i % 5 == 0) sum += i;
}
return sum;
}