I use following code, output seems ok, but requirements are not satisfied.
package com.codegym.task.task07.task0712;
import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.util.ArrayList;
/*
Shortest or longest
*/
public class Solution {
public static void main(String[] args) throws Exception {
BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));
ArrayList<String> list = new ArrayList<>();
for (int i = 0; i < 10; i++){
list.add(reader.readLine());
}
int longest = list.get(0).length();
int shortest = list.get(0).length();
int longestIndex=0, shortestIndex=0;
for (int i=1; i<list.size(); i++) {
if (longest < list.get(i).length()) {
longestIndex = i;
break;
}else if (shortest > list.get(i).length()) {
shortestIndex = i;
break;
}
}
if(longestIndex < shortestIndex){
System.out.println(list.get(longestIndex));
} else {
System.out.println(list.get(shortestIndex));
}
}
}