java 输入一个字符串,打印出该字符串中字符的所有排列
import java.util.Scanner; public class Demo001 { public static void main(String[] args) { String str = ""; Scanner scan = new Scanner(System.in); str = scan.nextLine(); permutation(str.toCharArray(), 0); } public static void permutation(char[] str, int i) { if (i >= str.length) return; if (i == str.length - 1) { System.out.println(String.valueOf(str)); } else { for (int j = i; j < str.length; j++) { char temp = str[j]; str[j] = str[i]; str[i] = temp; permutation(str, i + 1); temp = str[j]; str[j] = str[i]; str[i] = temp; } } } }
今日事今日毕