http://poj.org/problem?id=1731 //* @author: import java.util.*; //���ظ������� public class Main { static Scanner in = new Scanner(System.in); static boolean nextPermutation(char[] s) { int i; for(i=s.length-1; i>0; --i) if(s[i-1]< s[i]) break; if(i==0) return false; --i; int k=i+1; for(int j=i+2; j< s.length; ++j) if(s[i]< s[j]) k = j; { char x=s[i]; s[i] = s[k]; s[k] = x; } for(int j=i+1; j<=(s.length+i)/2; ++j) { char x=s[j]; k=s.length+i-j; s[j] = s[k]; s[k] = x; } return true; } public static void main(String[] args) { char[] s = in.next().toCharArray(); Arrays.sort(s); do { System.out.println(s); } while(nextPermutation(s)); } }
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