Virtual Keyboard Version 5

by samur3

JavaScript

let keyboard = "a,b,c,d,e,f,g,h,i,j,k,l";
let w = 5;
let input = "a,g,c";

function getKeyboardPath(keyboard,w,input){	
  keyboard = keyboard.split(',');  
  input = input.split(',');
  	
  const map = buildMapKeybaordCordination(input,w,keyboard);
  
  return buildPath(input,map);    
}

function buildPath(input,map){
	let path = '';    
	path = getPath({x:0,y:0},map[input[0]]);
  for(let i=1; i < input.length; i++){
  	path += getPath(map[input[i-1]],map[input[i]]);
  }
  return path;
}

function getPath(from,to){
	let path = '';
	if(from.x === to.x && from.y === to.y) return '!';    
  if(from.x > to.x) {
    	path = 'L'.repeat(getDiffValue(from.x,to.x));      
  }
  else if(from.x < to.x) {
    path = 'R'.repeat(getDiffValue(to.x,from.x));      
  }
  if(from.y < to.y) {
    path += 'D'.repeat(getDiffValue(from.y,to.y));      
  }
  else if(from.y > to.y) {
    path += 'U'.repeat(getDiffValue(to.y,from.y));          
  }  
  path += '!';
  return path;
}

function getDiffValue(value1,value2){
	return Math.abs(value1 - value2);
}

function buildMapKeybaordCordination(input,w,keyboard){
	let map = {};  
  keyboard.forEach((char,index) => {  	        
    	const column = index % w;
      const row = Math.floor(index / w )
      map[char] = {
        x: column,
        y: row
      };      
  });
  
  return map;
}

console.log(getKeyboardPath(keyboard,w,input));