You could also try reversing an integer. However, if you have solved the problem "reverse integer", you know that the reversed integer might overflow. How would you handle such case?

At present, the one-child family education is becoming increasingly prominent, the family reversed seniority ins and outs of this the child to do, all the parents will handle;

The handle of the utility model can be reversed without tools, therefore the utility model has the characteristics of simpleness and convenience.