/* Given an array of ints, return true if every 2 that appears in the array * is next to another 2. */ public boolean twoTwo(int[] nums) { if(nums.length == 1 && nums[0] == 2) return false; if(nums.length >= 2 && ((nums[0] == 2 && nums[1] != 2) || (nums[nums.length-1] == 2 && nums[nums.length-2] != 2))) return false; for(int i = 1; i <= nums.length - 2; i++) { if(nums[i] == 2 && nums[i-1] != 2 && nums[i+1] != 2) return false; } return true; }