[2016-11-02] Challenge #290 [Intermediate] Blinking LEDs

Part 1, in JS with a little jQuery to get input/display

//convert number to binary

function convertToBinary(i){

var bin = i.toString(2);

  return padBinary(bin);

}

//need to pad number with necessary 0's as JS strips leading zeros in numbers

function padBinary(s){

var i =0;

  if(s.length < 8){

   i = (8 - s.length);

  }

 var pad = '';

 while(i > 0){

  pad = pad + '0';

  i = i -1;

 }

 

 return pad + s;

}

//read the input and call displayOut Fn 

function readInput(){

var input = $('textarea#instructions').val().split("\n");

  displayOutput(input);

}

/**

Take input array and loop over, if it begins with ld set a to the 

  number,

  if it begins with out, display output

**/

function displayOutput(input){

var a;

  

   input.forEach(function(d){

    d.trim();

    

    if(d.indexOf('ld') !== -1){

     a = Number.parseInt(d.split(',')[1]);

    }else if(d.indexOf('out') !== -1){

     var bin = convertToBinary(a),

       binAr = bin.split(''),

          output = '';

        

        binAr.forEach(function(b){

         if(b === '0'){

           output = output + '.'

          }else if(b === '1'){

           output = output + '*';

          }

        });

        

      $('div#output').append(output);

      $('div#output').append("<br>");

      

    }

  });

  

}

/r/dailyprogrammer Thread