Java > Array-2 > twoTwo (CodingBat Solution)

Problem:

Given an array of ints, return true if every 2 that appears in the array is next to another 2.

twoTwo({4, 2, 2, 3}) → true
twoTwo({2, 2, 4}) → true
twoTwo({2, 2, 4, 2}) → false

Solution:

public boolean twoTwo(int[] nums) {
  boolean isTrue = false;
  
  for (int i = 0; i < nums.length; i++) {
    if (nums[i] == 2) {
      if (nums.length > 1 && i < nums.length-1 && nums[i+1] == 2)
        isTrue = true;
      else if (nums.length > 1 && i > 0 && nums[i-1] == 2)
        isTrue = true;
      else
        return false;
    }  
  }
  return true;
}