LAST
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Get the index of the last element in an array or string.
* Syntax
```sbsyntax
lastIndex% = LAST(array[])
lastIndex% = LAST(string$)
LAST array[] OUT lastIndex%
LAST string$ OUT lastIndex%
```
|* Input | Description |
| `array[]` | The array whose last index to get. |
| `string$`| The string whose last index to get. |
|* Output | Description |
| `lastIndex%` | The last index of the array or string. |
`lastIndex%` is the index of the last character in `string$` or the last element of `array[]`. All arrays are treated as linear; `LAST(v)` is always equivalent to `LEN(v)-1`.
* Examples
```sb4
'get the last index of this string
PRINT LAST("HELLO") '4
```
```sb4
'get the last index of an array
DIM ARY[10]
PRINT LAST(ARY) '10
```
```sb4
'all arrays are treated linearly
DIM ARY[5,2]
PRINT LAST(ARY) '5*2-1 = 9
```
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