Palindrome in sentences

Question

Palindrome in sentences

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#1 by (2 votes)
#2 by (0 votes)

0

Good, I have a small exercise done in javascript in which determines if a word entered by keyboard is palidrome or not. With words if it works correctly, but when I enter a sentence, it always jumps me with the fact that it is not palindrome.

Code:

function palindromo() {
  var texto;
  var alReves;

  texto = prompt("Introduce texto o palabra: ");
  alReves = cambiar(texto);

  if (texto == alReves) {
    document.write("Palindromo");
  } else {
    document.write("No palindromo");
  }
}

function cambiar(texto) {
  return texto.split("").reverse().join("");
}

palindromo();

javascript

asked by Mario Guiber 08.01.2018 в 16:26

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2 answers

0

It may be an uppercase problem since "Apa" is not equal to "apA". Try to do this, but I will try to offer you something else.

function palindromo()
{
    var texto;
    var alReves;

    texto = prompt("Introduce texto o palabra: ");
    alReves = cambiar(texto);

    if(texto.toLowerCase() == alReves.toLowerCase())
    {
        document.write("Palindromo");
    }
    else
    {
        document.write("No palindromo");
    }
}

function cambiar(texto)
{
    return texto.split("").reverse().join("");
}

answered by 08.01.2018 в 16:40

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score 2 · Accepted Answer

Good, according to the annotations of @blonfu I show you an example where:

Spaces are removed

It is all lowercase

Accents are removed (from Spanish).

function palindromo() {
  var texto;
  var alReves;

  texto = getCadenaSinAcentos(prompt("Introduce texto o palabra: ").replace(/\s/g, '').toLowerCase());
  alReves = cambiar(texto);

  if (texto == alReves) {
    document.write("Palindromo");
  } else {
    document.write("No palindromo");
  }
}

function cambiar(texto) {
  return texto.split("").reverse().join("");
}

function getCadenaSinAcentos(cadena) {
  // Quitamos acentos.
  cadena = cadena.replace(/á/gi, "a");
  cadena = cadena.replace(/é/gi, "e");
  cadena = cadena.replace(/í/gi, "i");
  cadena = cadena.replace(/ó/gi, "o");
  cadena = cadena.replace(/ú/gi, "u");
  return cadena;
}


palindromo();