647. Palindromic Substrings

[jzhangnu]

var countSubstrings = function(s) {
  var len = s.length;
  var arr = [];
  var isPalindro = function(str){
    var len = str.length
    for(var x = 0; x <= len-x-1 ; x++){
      if(str[x] !== str[len-x-1])return false
    }
    return true
  };
  
  for(var i=1; i<=len; i++)  {
    for(var j=0; j+i<=len; j++){
      var a = s.substr(j, i)
      if(isPalindro(a))arr.push(a)
    }
  }
    
  return(arr.length)
};