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Oct 23rd, 2018
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  1. bool isPalindrome(const string s1){
  2. if(s1.length() <2){
  3. return true;
  4. }
  5. if(s1.at(0) != s1.at(s1.length()-1)){
  6. return false;
  7. }
  8. string sub = s1.substr(1, s1.length()-2);
  9. return isPalindrome(sub);
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