input a string(no more than 10characters),select m char from the string,output the permutation characters in lexicographic order.
时间: 2024-02-24 13:58:58 浏览: 59
Sure, I can help you with that! Here is a Python code snippet that should do the trick:
``` python
from itertools import permutations
string = input("Please enter a string (no more than 10 characters): ")
m = int(input("Please enter the number of characters to select: "))
perms = sorted([''.join(p) for p in permutations(string, m)])
print("Permutations in lexicographic order:")
for perm in perms:
print(perm)
```
This code prompts the user to input a string and the number of characters to select from that string. It then generates all possible permutations of the selected characters and sorts them in lexicographic order using the `sorted` function. Finally, it prints out each permutation in the desired order.