PROGRAMMING:Statistics of alphabetic and numeric characters [2]
This problem requires the preparation of procedures, input n characters, statistics of the number of English letters, numeric characters and other characters.
###Input format:
The input gives a positive integer n in the first line, n characters in the second line, and the last carriage return indicates the end of the input, not counting.
###Output format:
Follow the
```
Letter = number of English letters, digit = number of numeric characters, other = number of other characters
```
Format output. Notice that there is a space to the left and right of the equal sign and a space after the comma.
###Input example:
Here is a set of inputs. For example:
```in
ten
aZ &
09 Az
```
###Output example:
The corresponding output is given here. For example:
```out
letter = 4, digit = 2, other = 4
```
answer：If there is no answer, please comment
###Input format:
The input gives a positive integer n in the first line, n characters in the second line, and the last carriage return indicates the end of the input, not counting.
###Output format:
Follow the
```
Letter = number of English letters, digit = number of numeric characters, other = number of other characters
```
Format output. Notice that there is a space to the left and right of the equal sign and a space after the comma.
###Input example:
Here is a set of inputs. For example:
```in
ten
aZ &
09 Az
```
###Output example:
The corresponding output is given here. For example:
```out
letter = 4, digit = 2, other = 4
```
answer：If there is no answer, please comment