java.utils.Arrays 를 import 하여 사용.
int[] numbers = {1,3,2,6,8};
Arrays.sort(numbers);
System.out.println(numbers); // {1,2,3,6,8}
int[] numbers = {1,3,2,6,8};
for(int i = 0; i < numbers.length; i++) {
for(int j = 0; j < numbers.length - 1 - i; j++) {
int x = numbers[j];
numbers[j] = numbers[j+1];
numbers[j+1] = x;
}
}