public class Test {
    public static void main(String[] args) {
        int[] array = {12, 35, 64, 43, 63};
        int max = array[0];
        int min = array[0];

        for(int i = 0; i < 4; i++){
          if(array[i] < array[i + 1]){
            max = array[i + 1];
          } else if(array[i] > array[i + 1]){
            min = array[i + 1];
          }
        }
        System.out.println("max:" + max + ", min:" + min);
 
        
    }
}