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Update vector distance

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Angelos Chalaris
2020-04-16 23:13:31 +03:00
parent be208445a4
commit 72bd003b81
1 changed files with 4 additions and 9 deletions
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13
snippets/vectorDistance.md
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@ -8,15 +8,10 @@ Returns the distance between two vectors.
Use `Array.prototype.reduce()`, `Math.pow()` and `Math.sqrt()` to calculate the Euclidean distance between two vectors.
```js
const vectorDistance = (...coords) => {
let pointLength = Math.trunc(coords.length / 2);
let sum = coords
.slice(0, pointLength)
.reduce((acc, val, i) => acc + Math.pow(val - coords[pointLength + i], 2), 0);
return Math.sqrt(sum);
};
const vectorDistance = (x, y) =>
Math.sqrt(x.reduce((acc, val, i) => acc + Math.pow(val - y[i], 2), 0));
```
```js
vectorDistance(10, 0, 5, 20, 0, 10); // 11.180339887498949
```
vectorDistance([10, 0, 5], [20, 0, 10]); // 11.180339887498949
```