Array to String (java)

int[] nums = {2,3,4};
//   Arrays.toString(nums)     string  ，     [2, 3, 4]
String num = Arrays.toString(nums);

次はcodingBatの問題を見てみましょう:Given an array of ints,return true if the array contains a 2 next to a 2 or a 4 next to a 4,but not both.either24([1, 2, 2]) → trueeither24([4, 4, 1]) → trueeither24([4, 4, 1, 2, 2]) → false
Solution:

public boolean either24(int[] nums) {
  String num = Arrays.toString(nums);
  if((num.contains("2, 2") && !num.contains("4, 4")) || 
  (!num.contains("2, 2") && num.contains("4, 4"))) {
    return true;
  }
  return false;
}