Circular structure practice

public class Practice25 {

    public static void main(String[] args) {
        /*
         * Li Bai walks on the street with nothing to do , Pick up the kettle and buy some wine . Double the store , See the flowers and have a drink , Wuyuhuahe store , Drink up the wine in the pot , How many buckets of wine are there in Li Bai's pot ？（ Use for Loop structure programming ）
         * Tips ： Use reverse thinking to analyze problems
         */
        double sum = 0;
        for (int i = 1; i <= 5; i++) {
            sum = (sum+1)/2;
        }
        System.out.println(sum);

    }

}

public class Practice29 {

    public static void main(String[] args) {
        // take 100 RMB converted into 1 element 、5 element 、10 Yuan change , How many exchange methods are there ？
        int count = 0;
        for (int i = 0; i <= 100; i++) {
            for (int j = 0; j <= 20; j++) {
                for (int m = 0; m <= 10; m++) {
                    if (i * 1 + j * 5 + m * 10 == 100) {
                        count++;
                        System.out.println(i + " " + j + " " + m);

                    }
                }
            }
        }
        System.out.println(count);
    }

}

    public static void main(String[] args) {
        // seek 100 To 1000 All between can be 5 and 6 Integers divided by integers , Each line shows 5 individual
        
        // Number of output numbers
        int count = 0;
        for(int i = 100;i<=1000;i++){
            if(i%5==0||i%6==0){
                System.out.print(i+" ");

                // Write down the number of output numbers
                count++;
                if(count%5==0){
                    System.out.println();
                }
            }
        }
    }

}