Не могу никак понять
package com.javarush.task.task07.task0721;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
/*
Минимаксы в массивах
*/
public class Solution {
public static void main(String[] args) throws IOException {
BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));
int maximum;
int minimum;
int[] list = new int[20];
minimum = list[0];
maximum = list[19];
for (int i = 0; i < list.length; i++){
list[i] = Integer.parseInt(reader.readLine());
if (list[i] < minimum)
minimum = list[i];
if (list[i] > maximum)
maximum = list[i];
}
System.out.print(maximum + " " + minimum);
}
}