如果我有一个向量矢量,有没有办法找到水平向量的大小?目前,我只想要尺寸4,然后我只想要尺寸为2。
[num1][num2]
[num3][num6]
[num4][num7]
[num5]
ruleList[0][0] = [num1]
ruleList[1][0] = [num2]
ruleList[0][1] = [num3]
for(int j = 0; j < ruleList[j].size(); j++)
{
}
ruleSize [0] .size()打印出4,而ruleList [1] .size()根据上面的示例向量打印出3。我想要的是打印2考虑[num1]和[num2]。如果我要添加另一个元素,那就是:
[num1][num2][num8]
[num3][num6]
[num4][num7]
[num5]
在这种情况下,它应返回3的大小(考虑[num1],[num2]和[num8])
我当前的矢量格式如下:
vector< vector<string> > ruleList(100, vector<string> (0, "0"));
答案 0 :(得分:1)
您正在以错误的方式填充向量
ruleList[0][0] = [num1]
ruleList[1][0] = [num2]
ruleList[0][1] = [num3]
如果你想要这个:
[num1][num2][num8]
[num3][num6]
[num4][num7]
[num5]
这样做:
vector< vector<string> > ruleList={{"num1","num2","num8"},
{"num3","num6"},
{"num4","num7"}};
或:
vector< vector<string> > ruleList(3);
ruleList[0]={"num1","num2","num8"};
ruleList[1]={"num3","num6"};
ruleList[2]={"num4","num7"};
现在ruleList[0].size()
返回3
答案 1 :(得分:0)
如果ruleList是向量的名称,ruleList.size()
应该为您提供“水平”距离。