let Steps = [];

let Maps = [];

let invertBitSteps = [

['q0','0','q0','1','R'],

['q0','1','q0','0','R'],

['q0','B','qe','B','R']

];

const inverBitMap = new Map();

for(let i=0;i<invertBitSteps.length;i++){

inverBitMap.set( invertBitSteps[i][0]+","+invertBitSteps[i][1],[invertBitSteps[i][2],invertBitSteps[i][3],invertBitSteps[i][4],i] );

}

Steps.push(invertBitSteps);

Maps.push(inverBitMap);

let addOneSteps = [

['q0','0','q0','0','R'],

['q0','1','q0','1','R'],

['q0','B','q1','B','L'],

['q1','0','qe','1','R'],

['q1','1','q1','0','L'],

['q1','B','qe','1','R']

]

const addOneMap = new Map();

for(let i=0;i<addOneSteps.length;i++){

addOneMap.set( addOneSteps[i][0]+","+addOneSteps[i][1],[addOneSteps[i][2],addOneSteps[i][3],addOneSteps[i][4],i] );

}

Steps.push(addOneSteps);

Maps.push(addOneMap);

let twosComplimentSteps = [

['q0','0','q0','0','R'],

['q0','1','q0','1','R'],

['q0','B','q1','B','L'],

['q1','0','q1','0','L'],

['q1','B','qe','B','L'],

['q1','1','q2','1','L'],

['q2','0','q2','1','L'],

['q2','1','q2','0','L'],

['q2','B','qe','B','L']

]

const twosComplimentMap = new Map();

for(let i=0;i<twosComplimentSteps.length;i++){

twosComplimentMap.set( twosComplimentSteps[i][0]+","+twosComplimentSteps[i][1],[twosComplimentSteps[i][2],twosComplimentSteps[i][3],twosComplimentSteps[i][4],i] );

}

Steps.push(twosComplimentSteps);

Maps.push(twosComplimentMap);

export function getNextStep(state, read, algo=0){

if( !Maps[algo].get(state+","+read) ) return ['qe','B','R'];

return Maps[algo].get(state+","+read);

}

export function getTable(algo){

return Steps[algo];

}