36 lines
760 B
JavaScript
36 lines
760 B
JavaScript
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function is_Palindrome(str1) {
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var rev = str1.split("").reverse().join("");
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return str1 == rev;
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}
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function longest_palindrome(str1){
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var max_length = 0,
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maxp = '';
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for(var i=0; i < str1.length; i++)
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{
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var subs = str1.substr(i, str1.length);
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for(var j=subs.length; j>=0; j--)
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{
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var sub_subs_str = subs.substr(0, j);
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if (sub_subs_str.length <= 1)
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continue;
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if (is_Palindrome(sub_subs_str))
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{
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if (sub_subs_str.length > max_length)
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{
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max_length = sub_subs_str.length;
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maxp = sub_subs_str;
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}
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}
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}
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}
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return maxp;
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}
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console.log(longest_palindrome("abracadabra"));
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console.log(longest_palindrome("HYTBCABADEFGHABCDEDCBAGHTFYW12345678987654321ZWETYGDE"));
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