$25ar 120g ssd# Hardware - 计算机硬件
r*r
1 楼
Complexity 是多少？ 别运行，试试看。
public static void mysteriousAlgorithm(String st, String chars) {
if (chars.length() == 1)
System.out.println(st + "" + chars);
else
for (int i = 0; i < chars.length(); i++) {
String newString = chars.substring(0, i) + chars.
substring(i + 1);
mysteriousAlgorithm(st + chars.charAt(i), newString);
}
}
public static void mysteriousAlgorithm(String st, String chars) {
if (chars.length() == 1)
System.out.println(st + "" + chars);
else
for (int i = 0; i < chars.length(); i++) {
String newString = chars.substring(0, i) + chars.
substring(i + 1);
mysteriousAlgorithm(st + chars.charAt(i), newString);
}
}
