simon0191

function main(str) {
  var s = "";
  for(var i = str.length-1;i>=0;--i)s+=str[i];
  return s;
}

console.log(main('hola'));
console.log(main('mundo'));
console.log(main('mundo  bla'));

simon0191

function main(str) {
  str = str.replace(/\s/g,'');
  var mid = str.length>>1;
  for(var i = 0;i<mid;++i) {
    if(str[i] !== str[str.length-1-i]) return false;
  }
  return true;
}
/*

simon0191

function main(str) {
  var mid = str.length>>1;
  for(var i = 0;i<mid;++i) {
    if(str[i] !== str[str.length-1-i]) return false;
  }
  return true;
}
/*
console.log(main('anitalavalatina'));

simon0191

function main(str) {
  var mid = str.length>>1;
  for(var i = 0;i<mid;++i) {
    if(str[i] !== str[str.length-1-i]) return false;
  }
  return true;
}
console.log(main('anitalavalatina'));
console.log(main('a'));

simon0191

function main(str) {
  var mid = Math.floor(str.length/2);
  for(var i = 0;i<mid;++i) {
    if(str[i] !== str[str.length-1-i]) return false;
  }
  return true;
}
/*
console.log(main('a'));

simon0191

var memo = {
  0: 1,
  1: 1
};

function fib(n) {
  if(memo[n]) return memo[n];
  return (memo[n] = fib(n-1) + fib(n-2));
}

simon0191

var memo = {
  0: 1,
  1: 1
};

function fib(n) {
  if(memo[n]) return memo[n];
  return (memo[n] = fib(n-1) + fib(n-2));
}

simon0191

<link rel="import" href="../paper-tabs/paper-tabs.html">
<link rel="import" href="../paper-tabs/paper-tab.html">

<polymer-element name="my-element">

  <template>
    <style>    
      :host {
        position: absolute;
        width: 100%;