import java.util.*;
public class Solution {
    public ArrayList<Integer> maxInWindows(int [] num, int size) {
        ArrayList<Integer> list = new ArrayList<Integer>();
        if (size > num.length) {
            return list;
        }
        if(size==1){
            for(int i=0;i<num.length;i++){
                list.add(num[i]);
            }
            return list;
        }
        int pos = 0;
        int max = num[pos];
        int count = 0;
        for (int i = 0; i < num.length;) {
            count++;
            if (count == size ) {
                list.add(max);
                pos++;
                i = pos;
                max = num[pos];
                count=0;
                continue;
                
            }
            if (i + 1 < num.length && max < num[i + 1]) {
                max = num[i + 1];
            }
            i++;
            

        }
        return list;

    }
}