Remove Covered Intervals 给一个数组, 里面是intervals, 求移除所有重叠的intervals后, 数组里面元素的个数. 这个题先排序一下, 然后比较intervals的end值即可. Date January 16, 2020 Category Leetcode Comments No Comments
Find Numbers with Even Number of Digits 给一个数组, 找到里面位数为偶数的数字的个数. Date January 16, 2020 Category Leetcode Comments No Comments