function palindrome javascript

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showing results for - "function palindrome javascript"
Jay
28 Jun 2016
1function palindrome(str) {
2
3    var len = str.length;
4    var mid = Math.floor(len/2);
5
6    for ( var i = 0; i < mid; i++ ) {
7        if (str[i] !== str[len - 1 - i]) {
8            return false;
9        }
10    }
11
12    return true;
13}
14
Juana
11 Sep 2018
1function isPalindrome(str) {
2  str = str.replace(/\W/g, '').toLowerCase();
3  return (str == str.split('').reverse().join(''));
4}
5
6console.log(isPalindrome("level"));                   // logs 'true'
7console.log(isPalindrome("levels"));                  // logs 'false'
8console.log(isPalindrome("A car, a man, a maraca"));  // logs 'true'
9
10
Emna
18 Jan 2017
1const isPalindrome = str => str === str.split('').reverse().join('');
2
3// Examples
4isPalindrome('abc');        // false
5isPalindrom('abcba');       // true
Gwyneth
20 Jan 2020
1isPalindrome = function(x) {
2    if (x < 0) {
3        return false;
4    }
5    
6    return x === reversedInteger(x, 0);
7};
8
9reversedInteger = function(x, reversed) {
10    if(x<=0) return reversed;
11        reversed = (reversed * 10) + (x % 10);
12        x = Math.floor(x / 10);
13    
14    return reversedInteger(x, reversed);
15};
Fabio
12 Jul 2018
1function remove_spaces_strict(string)
2{
3    return string.replace(/\s/gm, "");
4}
5
6function to_lower_case(string="")
7{
8    return string.toLocaleLowerCase();
9}
10
11
12function isPalindrome(string) {
13    let string1 = string;
14    if (typeof string === 'string' || typeof string === 'number') {
15        if (typeof string === 'number') {
16            string1 = new Number(string1).toString();
17        }
18        string1 = remove_spaces_strict(string1);
19        string1 = to_lower_case(string1);
20        let len1 = string1.length;
21        let len = Math.floor(string1.length / 2);
22        let i = 0;
23
24        while(i < len) {
25    
26                if (string1[i] !== string1[len1 - (1 + i)]) {
27                    return false;
28                }
29                console.log(string1[i] + " = " + string1[len1 - (1 + i)]);
30                i++;
31            }
32    }else{
33        throw TypeError(`Was expecting an argument of type string1 or number, recieved an argument of type ${ typeof string1}`);
34    }
35    return string;
36}
37
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