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brainfuck
=========
Brainfuck is represented by an array with 30,000 cells initialized to zero
and a data pointer pointing at the current cell.
There are eight commands:
```
+ : Increments the value at the current cell by one.
- : Decrements the value at the current cell by one.
> : Moves the data pointer to the next cell (cell on the right).
< : Moves the data pointer to the previous cell (cell on the left).
. : Prints the ASCII value at the current cell (i.e. 65 = 'A').
, : Reads a single input character into the current cell.
[ : If the value at the current cell is zero, skips to the corresponding ] .
Otherwise, move to the next instruction.
] : If the value at the current cell is zero, move to the next instruction.
Otherwise, move backwards in the instructions to the corresponding [ .
```
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