camperbot/bonfire-check-for-palindromes

CamperBot

@camperbot

hint [2/9]

Explanation:

You have to check if the string you get as an input is a palindrome and return true if it is, and false otherwise.

joelauerbach0

@joelauerbach0

hint

CamperBot

@camperbot

hint [3/9]

Hint: 1

You may use regular expressions (RegExp) to remove unwanted characters from the string.

http://devdocs.io/#q=js+RegExp

joelauerbach0

@joelauerbach0

hint

CamperBot

@camperbot

hint [4/9]

Hint: 2

You may use Array.prototype.split and Array.prototype.join methods or for loop.

joelauerbach0

@joelauerbach0

hint

CamperBot

@camperbot

hint [5/9]

Hint: 3

You may lowercase the string using String.prototype.toLowerCase.

http://devdocs.io/#q=js+String+toLowerCase

joelauerbach0

@joelauerbach0

hint

CamperBot

@camperbot

hint [6/9]

Spoiler Alert!

Solution ahead!

joelauerbach0

@joelauerbach0

hint

CamperBot

@camperbot

hint [7/9]

First

function palindrome(str) {
  var normalizedStr = str.replace(/[\W_]/g, '').toLowerCase();
  var reverseStr = normalizedStr.split('').reverse().join('');
  return normalizedStr === reverseStr;
}

joelauerbach0

@joelauerbach0

hint

CamperBot

@camperbot

hint [8/9]

Second

function palindrome(str) {
  str = str.toLowerCase().replace(/[\W_]/g, '');
  for(var i = 0, len = str.length - 1; i < len/2; i++) {
    if(str[i] !== str[len-i]) {
      return false;
    }
  }
  return true;
}

Code Explanation:

We use regular expressions to replace any uppercase letter into a lowercase. Then we check if the string is the same as the reversed string using split() to split the original string by characters, then reverse and then join it back together.

onethreeeight

@onethreeeight

hint

CamperBot

@camperbot

hint [1/9]

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Oscar Gatamah

@gatamah

hint

CamperBot

@camperbot

hint [1/9]

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onethreeeight

@onethreeeight

hint

CamperBot

@camperbot

hint [2/9]

Explanation:

You have to check if the string you get as an input is a palindrome and return true if it is, and false otherwise.

Roko Medančić

@R0k0

hint profile lookup

CamperBot

@camperbot

hint [1/9]

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Roko Medančić

@R0k0

hint

CamperBot

@camperbot

hint [2/9]

Explanation:

You have to check if the string you get as an input is a palindrome and return true if it is, and false otherwise.

codyWchamberlain

@codyWchamberlain

hint

CamperBot

@camperbot

hint [3/9]

Hint: 1

You may use regular expressions (RegExp) to remove unwanted characters from the string.

http://devdocs.io/#q=js+RegExp

codyWchamberlain

@codyWchamberlain

hint

CamperBot

@camperbot

hint [4/9]

Hint: 2

You may use Array.prototype.split and Array.prototype.join methods or for loop.

codyWchamberlain

@codyWchamberlain

hint

CamperBot

@camperbot

hint [5/9]

Hint: 3

You may lowercase the string using String.prototype.toLowerCase.

http://devdocs.io/#q=js+String+toLowerCase

codyWchamberlain

@codyWchamberlain

hint

CamperBot

@camperbot

hint [6/9]

Spoiler Alert!

Solution ahead!

codyWchamberlain

@codyWchamberlain

hint

CamperBot

@camperbot

hint [7/9]

First

function palindrome(str) {
  var normalizedStr = str.replace(/[\W_]/g, '').toLowerCase();
  var reverseStr = normalizedStr.split('').reverse().join('');
  return normalizedStr === reverseStr;
}

karenkomine

@karenkomine

Can someone explain the stuff that is inside .replace in var normalizedStr?

karenkomine

@karenkomine

Why do we used ' ' ' /[\W_]/g ' ' ' ?

/[\W_]/g

In str.replace?

karenkomine

@karenkomine

How would you set up your code so that in a for loop, you check every single word in an array and you stop the for loop when you find the longest string in that array?

Ahmed Othman

@ahmedgothman

@karenkomine /[\W_]/g is for word characters similiar to [A-Za-z0-9]

@karenkomine sorry i thought it was a recent comment:D

Shruti Hardat

@shrutihardat

hint

CamperBot

@camperbot

hint [1/9]

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Shivang

@shivang207

hint Record Collection

CamperBot

@camperbot

hint [1/9]

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Kunal

@kunalg1

hint

CamperBot

@camperbot

hint [2/9]

Explanation:

You have to check if the string you get as an input is a palindrome and return true if it is, and false otherwise.

Kunal

@kunalg1

hint

CamperBot

@camperbot

hint [3/9]

Hint: 1

You may use regular expressions (RegExp) to remove unwanted characters from the string.

http://devdocs.io/#q=js+RegExp

Kunal

@kunalg1

hint

CamperBot

@camperbot

hint [4/9]

Hint: 2

You may use Array.prototype.split and Array.prototype.join methods or for loop.

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