palindrome in javascript
function palindrome(str) {
var len = str.length;
var mid = Math.floor(len/2);
for ( var i = 0; i < mid; i++ ) {
if (str[i] !== str[len - 1 - i]) {
return false;
}
}
return true;
}Function Palindrome JavaScript
function isPalindrome(str) {
str = str.replace(/\W/g, '').toLowerCase();
return (str == str.split('').reverse().join(''));
}
console.log(isPalindrome("level")); // logs 'true'
console.log(isPalindrome("levels")); // logs 'false'
console.log(isPalindrome("A car, a man, a maraca")); // logs 'true'javascript palindrome check
const isPalindrome = str => str === str.split('').reverse().join('');
// Examples
isPalindrome('abc'); // false
isPalindrom('abcba'); // truejs palindrome number
isPalindrome = function(x) {
if (x < 0) {
return false;
}
return x === reversedInteger(x, 0);
};
reversedInteger = function(x, reversed) {
if(x<=0) return reversed;
reversed = (reversed * 10) + (x % 10);
x = Math.floor(x / 10);
return reversedInteger(x, reversed);
};javascript palindrome
function remove_spaces_strict(string)
{
return string.replace(/\s/gm, "");
}
function to_lower_case(string="")
{
return string.toLocaleLowerCase();
}
function isPalindrome(string) {
let string1 = string;
if (typeof string === 'string' || typeof string === 'number') {
if (typeof string === 'number') {
string1 = new Number(string1).toString();
}
string1 = remove_spaces_strict(string1);
string1 = to_lower_case(string1);
let len1 = string1.length;
let len = Math.floor(string1.length / 2);
let i = 0;
while(i < len) {
if (string1[i] !== string1[len1 - (1 + i)]) {
return false;
}
console.log(string1[i] + " = " + string1[len1 - (1 + i)]);
i++;
}
}else{
throw TypeError(`Was expecting an argument of type string1 or number, recieved an argument of type ${ typeof string1}`);
}
return string;
}Copyright © 2021 Codeinu
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