PROGRAMMING:Reverse order of string
Put the characters in a string in reverse order. If the string is "ABCDE", it should be "edcba" after being stored in reverse order.
###Input format:
Enter a string no more than 20 in length on one line and end with a carriage return.
###Output format:
Output the string in reverse order on one line.
###Input example:
```in
abcde
```
###Output example:
```out
edcba
```
answer：If there is no answer, please comment
###Input format:
Enter a string no more than 20 in length on one line and end with a carriage return.
###Output format:
Output the string in reverse order on one line.
###Input example:
```in
abcde
```
###Output example:
```out
edcba
```
answer：If there is no answer, please comment