用java编程实现从0到100组成一个环，从第一个开始数，每次到第7个就输出，最后一个剩余的是几？

public class Test{
    public static void main(String... args){
        boolean[] flags = new boolean[100];         //数字是否被移除
        int cursor = 0;                             //游标
        int i ;                              //小循环游标   i = cursor%100
        int count = 0;                              //已移除个数
        int j = 0;                                  //数字有效次数。未被移除记有效次数，否则不计数。
        while(count!=100){
            i = cursor%100;
            if(!flags[i])                              //未被移除，数字有效
                j++;
                if(j%7==0){                             //有效次数，逢7移除，移除个数+1。
                    flags[i]=true;
                    count++;
                    System.out.println(count +"   "+(i+1)+"  "+(cursor+1));// 移除顺序、数字、循环次数。
               
            }
            cursor++;
        }
    }
}

public static int test(int start, int end, int step) {

    int count = end - start + 1;
    boolean[] flags = new boolean[count];
    int cursor = 0;
    int i;
    int del_count = 0;
    int j = 0;

    int result = 0;

    while (del_count != count) {
        i = cursor % count;
        if (!flags[i]) {
            j++;

            if (j % step == 0) {
                flags[i] = true;
                del_count++;
                result = i + start;
                // System.out.println(j + " " + del_count + " " + (i + start) + " " + (cursor));
            }
        }
        cursor++;
    }
    return result;
}