please help and show me a right way.
package com.codegym.task.task07.task0721;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.Arrays;
/*
Min and max in arrays
*/
public class Solution {
public static void main(String[] args) throws IOException {
BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));
int[] leng = new int[20];
int maximum = leng[0] ;
int minimum = leng[0] ;
//write your code here
for(int i=0; i<leng.length; i++){
leng[i]= Integer.parseInt(reader.readLine());
if(leng[i]>maximum){
maximum = leng[i];
}
if(leng[i]<minimum){
minimum= leng[i];
}
}
System.out.print(maximum + " " + minimum);
}
}