Sum of two smallest numbers in an array, help me understand

JavaScript
1

Hey everyone, this is from code wars
Create a function that returns the sum of the two lowest positive numbers given an array of minimum 4 positive integers. No floats or non-positive integers will be passed.

For example, when an array is passed like [19, 5, 42, 2, 77] , the output should be 7 .

[10, 343445353, 3453445, 3453545353453] should return 3453455 .
I created this function

function sumTwoSmallestNumbers(numbers) {  
 a = Math.min.apply(Math, numbers); 
 numbers.splice(a);
 b = Math.min.apply(Math, numbers);
 return (a + b) 
}

So this code works sometimes. It passes some of the test but not all. If it didn’t work at all I would understand, but the fact that it works sometimes puzzles me.
What’s wrong with my function?

2 Likes
2

Array.splice works by indexes, but when you are trying to use it, you are passing the value, and not the position inside the array.

For example if your input is [19, 5, 42, 2, 77];
a is 2,
this means that your splice function is splice(2)
which means your array is now [ 42, 2, 77 ].

Here you can find the full documentation of Array.splice

3 Likes
3

Thank you. I think I get it now

4

@Imstupidpleasehelp so, would we just toss a 0 in there between Math and number so that we just get the number at the index of ?