import java.util.*; 
 
public class Main{
     public static void main(String []args){
        String num = "1432219";
        int k = 3;
        int length = num.length();
        int size = length - k;
        int top = 0;
        ArrayList<Integer> mine = new ArrayList<Integer>();
        for ( int i =0; i < length; i ++){
            int temp = Character.getNumericValue(num.charAt(i));
            mine.add(temp);
        }
 
 
        for (int i = 0; i < length; i ++ ){
            if((i!=0) && (num.charAt(i) > num.charAt(i-1)) && (k != 0)){
 
                for(int j = 0; j < k; j ++){
                    mine.remove(i+j);
                }
            }
        }
 
        System.out.println(mine);
     }
}

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