题解 | #区间列表交集#

import java.util.*;


public class Solution {
    /**
     * 代码中的类名、方法名、参数名已经指定，请勿修改，直接返回方法规定的值即可
     *
     * 
     * @param nums int整型ArrayList 
     * @return int整型
     */
    public int removenums (ArrayList<Integer> nums) {
        // write code here
        int preNum = -1;
        int account = 0;
        for (int i = 0; i < nums.size(); i++) {
            int currentNum = nums.get(i);
            if (currentNum != preNum) {
                preNum = currentNum;
                account = 1;
            }
            else {
                if (account + 1 == 3) {
                    nums.remove(i);
                    i--;
                }
                else {
                    account++;
                }
            }
        }
        return nums.size();
    }
}