[Java][Answer] CodingBat Array-1 > unlucky1()

We'll say that a 1 immediately followed by a 3 in an array is an "unlucky" 1. Return true if the given array contains an unlucky 1 in the first 2 or last 2 positions in the array.

unlucky1([1, 3, 4, 5]) → true
unlucky1([2, 1, 3, 4, 5]) → true
unlucky1([1, 1, 1]) → false

Answer 1:

public boolean unlucky1(int[] nums) {
  if(nums.length<2) return false;
  return nums[0] == 1 && nums[1] == 3 ||
         nums[1] == 1 && nums[2] == 3 ||
         nums[nums.length-2] == 1 && nums[nums.length-1] == 3;
}

Answer 2:

public boolean unlucky1(int[] nums) {
if (nums.length ==0 || nums.length ==1)
return false;
else if ((nums[0] ==1 && nums[1] ==3) ||
         (nums[1] ==1 && nums[2] ==3) ||
         (nums[nums.length -1] ==3 &&
          nums[nums.length -2] ==1))
return true;
else
return false;
}

Reference
http://www.javaproblems.com/2012/12/coding-bat-java-array-1-unlucky1.html