1 | 2 | 3 |
---|---|---|
1 | 2 | 3 |
1 | 2 | 9 |
void perm2(Listprefix, List list){ if(list.size() == 0){ for(Integer num : prefix){ System.out.print(num); } System.out.println(); } for(int i=0; i newList = new ArrayList (list); List < Integer> newPrefix = new ArrayList(prefix); newPrefix.add(newList.get(i)); newList.remove(i); perm2(newPrefix, newList); } }
boolean checkRowCol(int[][] array, int initSum){ int height = array.length; for(int j=0; j < height; j++){ int vs = 0; int hs = 0; for(int i=0; i < height; i++){ vs += array[j][i]; hs += array[i][j]; } if(initSum != vs || initSum != hs) return false; } return true; } boolean checkDiagonal(int[][] array, int initSum){ int len = array.length; int maind = 0; int minord = 0; for(int i=0; i < len; i++){ maind += array[i][i]; minord += array[len-1-i][i]; } return initSum == maind && initSum == minord; }