机器人CPP编程基础-02变量Variables 全文AI生成。 C
#include<iostream>using namespace std;main()
{int a10,b35; // 4 bytescout<<"Value of a : "<<a<<" Address of a : "<<&a <<endl;cout<<"Val…
34. Find First and Last Position of Element in Sorted Array
题意:找到非递减序列中目标的开头和结尾
我的思路
用二分法把每一个数字都找到,最后返回首尾两个数
代码 Runtime12 ms Beats 33.23% Memory14 MB Beats 5.16%
class Solution {…
null值与任意值比较时都为fasle
not in 、"!"、"not like"条件过滤都会过滤掉null值的数据
SELECT * from temp; SELECT * from temp where score not in (70); 返回null解决方法:
SELECT * from temp where score not in (70) or score is null;SELECT…