137.只出现一次的数字II class Solution {public int singleNumber(int[] nums) {Map<Integer,Integer> map new HashMap<>();for(int num : nums){Integer count map.get(num);if(count null){count 1;}else{count;}map.put(num,count);}for(Integer val:map.…
public class Column {//单元格内容private String content;//字段名称,用户导出表格时反射调用private String fieldName;//这个单元格的集合private List<Column> listTpamscolumn new ArrayList<Column>();int totalRow;int totalCol;int row;//exc…