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What you need to do is create a Boolean parser.
Boolean expressions, in case you haven't heard of them yet, have two inputs and one output. There are four 'gates' in boolean arithmetic, namely OR (represented by |), AND (represented by &), NOT (which are used a bit like brackets : / and \ note, I could have used !, but you can't use them as brackets, since !!!! is ambiguous (//\\ or /\/\)) and XOR (represented by ^). These gates operate on their inputs which are either true or false. We can list the possible inputs (A and B in this case) and the outputs (O) using a truth table as follows:
XOR
A|B|O
-----
0|0|0
0|1|1
1|0|1
1|1|0
OR
A|B|O
-----
0|0|0
0|1|1
1|0|1
1|1|1
AND
A|B|O
-----
0|0|0
0|1|0
1|0|0
1|1|1
NOT is only 1 input, and it goes from true to false and vice versa.
In Boolean expressions, they are used like this:
1^((0&1&1)&/(1&0&1)\)
Evaluating as follows:
1^(( 1 |1)&/(1&0&1)\) | 0 OR 1 = 1, order of operations left to right - no brackets
1^(( 1 )&/(1&0&1)\) | 1 OR 1 = 1
1^( 1 &/(1&0&1)\) | Remove brackets
1^( 1 &/( 0 &1)\) | 1 AND 0 = 0
1^( 1 &/( 0 )\) | 0 AND 1 = 0
1^( 1 &/ 0 \) | Remove brackets
1^( 1 & 1 ) | NOT 0 = 1
1^( 1 ) | 1 AND 1 = 1
1^ 1 | Remove brackets
0 | 1 XOR 1 = 0
so 0 is the result.
Task: create a program to do this!*
I/O examples
Input -> Output
1v(0.1) -> 1
1v(0.1./1\) -> 1
/0\v(0+1) -> 0
0v1v1 -> 0
Notes
- There is no order of precedence. We will treat
0.1v0+1as(((0.1)v0)+1)
Leaderboard
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1Why use non-ascii? This makes it so its hard for non-esolangs to compete. – Conor O'Brien – 2016-04-06T21:33:29.623
Sorry, **esolangs – Conor O'Brien – 2016-04-06T22:01:43.840
7Try the sandbox ! – Conor O'Brien – 2016-04-07T00:21:08.110
Is this looking better now? – None – 2016-04-07T07:36:58.883
1
You should format the test cases better, at the moments it is impossible to copy & paste them all at once. Read here for some more details on this.
– Denker – 2016-04-07T07:37:49.917@DigitalTrauma Nope, there's no whitespace. – None – 2016-04-07T07:47:32.890
You also use
v, but that shoudn't be XOR, since that symbol is OR in logic. – mbomb007 – 2016-04-07T16:49:46.257@mbomb007 What would you recommend? – None – 2016-04-07T17:10:34.900
1Use common Boolean representations for operators like the words for
And Or Xor Notor use& | ^ !. – mbomb007 – 2016-04-07T18:08:01.2102It's not clear to me what the cutoff is for "builtins that trivialise the problem". General-purpose eval could be made to work by first applying some simple substitutions: should that count? The examples also include elements which aren't mentioned in the spec. – Peter Taylor – 2016-04-07T18:58:45.140
I am deleting the question and moving it to the sandbox. Is this okay? – None – 2016-04-08T16:27:37.777