YOUKILLER

int[] arr = {1, 1, 0, 0, 1, 0, 1, 1, 0, 0};

for (int i = 0; i < arr.length; i++) {
if (arr[i] == 0)
arr[i]++;
else
arr[i]--;
}
System.out.println(Arrays.toString(arr));
}
}