>>805 圧縮したので少しパスタ public class Main { public static void main(String[] args) { int n = 4; //要素数．設定方法は任す int[] a = new int[n]; for (int i=0; i<n; i++) a[i] = i+1; while (true) { System.out.print("{ "); for (int i=0; i<n; i++) System.out.print(a[i]+" "); System.out.println("}"); int k=n-2, l=n-1, w; while (k>=0 && a[k]>a[k+1]) k--; if (k<0) break; while (a[k]>a[l]) l--; w = a[k]; a[k] = a[l]; a[l] = w; l=n; while (++k<--l) { w = a[k]; a[k] = a[l]; a[l] = w; } } } }
