Find Second Largest number from List of Integers

 list<Integer> integerList =new list<Integer>{7, 21, 45, 6,34,56,78,26,65,87,95};

// DESCENDING ORDER

for(Integer i = 0 ; i < integerList.size() ; i ++) {

for(integer j = i+1 ; j <= integerList.size() -1 ; j ++ ){

  integer x = 0 ;

  if(integerList[i] <  integerList[j]){

   x = integerList[i]  ;

   integerList[i] = integerList[j]  ;

   integerList[j]  = x;

  }

}  

}

system.debug(integerList) ;

system.debug('Ssize: '+integerList[1]);