Tries to purchase n cores for the specified Hacknet Node.
Returns true if it successfully purchases n cores for the Hacknet Node or if it purchases some positive amount and the Node reaches its max number of cores.
Returns false otherwise.
<b>Signature:</b>
```typescript
upgradeCore(index: number, n: number): boolean;
```
## Parameters
| Parameter | Type | Description |
| --- | --- | --- |
| index | number | Index/Identifier of Hacknet Node. |
| n | number | Number of cores to purchase. Must be positive. Rounded to nearest integer. |
<b>Returns:</b>
boolean
True if the Hacknet Node’s cores are successfully purchased, false otherwise.
