1.求众数：66, 31, 19, 20, 80, 35, 78, 10, 24, 19

2.求众数：−3, −3, 24, −3, 16, 48, −3, 51, 51, 51

3.求众数：62, 49, 62, 49, 49, 29, 49, 62

4.求众数：2, 2, 2, 0, −7, 2, 43, −4

5.求众数：20, −3, 35, 20, 20, 35, 20, 35

6.求众数：35, −1, −1, 38, 11, 16, −1, −1

7.求众数：53, 68, 68, 68, 68, 55, −3, 34, 45, 44

8.求众数：18, 17, −13, 68, 4, 39, 39

9.求众数：71, 21, 71, 58, 39, −10, 43, 24

10.求众数：33, 37, −1, 22, 29, 28, −1, −10, 34, 70

11.求众数：63, −2, 63, 19, 63, 19, 19, 63

12.求众数：58, 38, 58, 41, 79, 62, 41, 55, 58

13.求众数：75, 23, 26, 26, 60, 30, 26, 26

14.求众数：9, 77, 10, 11, 10, 49, 10, 42, 12

15.求众数：21, 80, 29, 67, 63, 28, 48, 68, 21, 17