Programming Questions

Array Addition test cases

For some reason my code isn't passing the test and I'm pretty sure it's correct. One of the test cases was [1,2,3,4] so the maximum is 4 and the sum of the others is 1+2+3=6. Clearly 4 != 6 and my code produces false. Anyone else experiencing this?

```
function ArrayAdditionI(arr) {
// code goes here
var max = Math.max.apply(Math, arr),
sum = 0;
for (i = arr.length - 1; i >= 0; i -= 1) {
if (arr[i] != max) {
sum += arr[i];
}
}
return (sum === max);
}
```

aarongchou
posted this question on 1/12/14 **|**

3

The challenge description says you should return

`true`

if any combination of numbers in the array can be added up to equal the largest number. In this case (1,2,3) you can add 1 + 3 to equal 4, so the result is
`true`

Tip: look into array permutations :)
Grillparzer

answered on 01/12/14

0

Ah, I misread the question. I thought it said the sum of all remaining numbers, not a combination. Thanks @Grillparzer!

aarongchou

answered on 01/12/14

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