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Brainfuck interpreter for Android
Hello,
The startBracket and stopBracket implementation is incorrect: you find the next "matching bracket" in a too naive way. It is necessary to create a counter "nested" and modify the code:
case Constants.startBracket:
if (cells[cellPos] == 0) {
nested = 0;
while (program[progPos] != Constants.stopBracket || nested !=0) {
progPos++;
if(progPos >= program.length) {
throw new ProgramException(false);
} else {
if(program[progPos] == Constants.starBracket) {
nested++;
}
if(program[progPos] == Constants.stopBracket) {
nested--;
}
}
}
progPos++;
} else {
progPos++;
}
break;
Otherwise, it will incorrectly interpret the program:
+++++++[->+++++++<]>. >[[]<->] <.
printing "10" instead of "11".
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