整数的划分问题,要求将所有可能性输出,用Java或c++都可以

import java.util.HashMap;
import java.util.Map;
public class Test {
private static void getString(String t, int h, int o, Map map) {
if (h > o) {
getString(t, o, o, map);
} else {
if (h < o) {
getString(h + "+" + t, h, o - h, map);
for (int i = h - 1; i >= 2; i--) {
getString(h + "+" + t, i, o - h, map);
}
} else {
String out = h + "+" + t;
out = out.substring(0, out.length() - 1);
map.put(out, out);
for (int i = h - 1; i >= 2; i--) {
getString(t, i, o, map);
}
}
String out = t + "";
for (int x = 0; x < o; x++)
out = 1 + "+" + out;
out = out.substring(0, out.length() - 1);
map.put(out, out);
}
}
public static void outAll(int n) {
Map map = new HashMap();
getString("", n, n, map);
for (String key : map.keySet()) {
System.out.println(key);
}
}
public static void main(String[] args) {
outAll(6);
}
}