List的Capacity

Capacity

在.NET中List的容量应该只是受到硬件限制。

属性Capacity的真正含义，是创建List时给它预分配的容量。

一旦项的数量超过了当前的Capacity，Capacity会以

Capacity = (Capacity==0)?A_VALUE_YOU_CANNOT_SURE:(Capacity*2)

的方式增长。

当使用默认构造函数创建一个List时，Capacity就是0。（或者你非要用一个0作为capacity参数调用构造）

所以当Capacity是0时，我们为List添加了第一个项目后，Capacity是多少呢？

对，是A_VALUE_YOU_CANNOT_SURE。

不过，在.NET2.0和.NET4.5中，这个值看上去都是4。

            System.Diagnostics.Debug.WriteLine(string.Format("default capacity is : {0}", new List<string>().Capacity));

            int initCapacity = 0;
            List<string> l = new List<string>(initCapacity);
            System.Diagnostics.Debug.WriteLine(string.Format("constructe a list with capacity: {0}", l.Capacity));

            for (int u = 0; u < 65; ++u)
            {
                System.Diagnostics.Debug.WriteLine(string.Format("Count: {0}, Capacity: {1}", l.Count, l.Capacity));
                //l.TrimExcess();
                //System.Diagnostics.Debug.WriteLine(string.Format("    TrimExcess() -> Count: {0}, Capacity: {1}", l.Count, l.Capacity));
                l.Add("1");
            }

输出

default capacity is : 0
constructe a list with capacity: 0
Count: 0, Capacity: 0
Count: 1, Capacity: 4
Count: 2, Capacity: 4
Count: 3, Capacity: 4
Count: 4, Capacity: 4
Count: 5, Capacity: 8
Count: 6, Capacity: 8
Count: 7, Capacity: 8
Count: 8, Capacity: 8
Count: 9, Capacity: 16
Count: 10, Capacity: 16
Count: 11, Capacity: 16
Count: 12, Capacity: 16
Count: 13, Capacity: 16
Count: 14, Capacity: 16
Count: 15, Capacity: 16
Count: 16, Capacity: 16
Count: 17, Capacity: 32
Count: 18, Capacity: 32
Count: 19, Capacity: 32
Count: 20, Capacity: 32
Count: 21, Capacity: 32
Count: 22, Capacity: 32
Count: 23, Capacity: 32
Count: 24, Capacity: 32
Count: 25, Capacity: 32
Count: 26, Capacity: 32
Count: 27, Capacity: 32
Count: 28, Capacity: 32
Count: 29, Capacity: 32
Count: 30, Capacity: 32
Count: 31, Capacity: 32
Count: 32, Capacity: 32
Count: 33, Capacity: 64
Count: 34, Capacity: 64
Count: 35, Capacity: 64
Count: 36, Capacity: 64
Count: 37, Capacity: 64
Count: 38, Capacity: 64
Count: 39, Capacity: 64
Count: 40, Capacity: 64
Count: 41, Capacity: 64
Count: 42, Capacity: 64
Count: 43, Capacity: 64
Count: 44, Capacity: 64
Count: 45, Capacity: 64
Count: 46, Capacity: 64
Count: 47, Capacity: 64
Count: 48, Capacity: 64
Count: 49, Capacity: 64
Count: 50, Capacity: 64
Count: 51, Capacity: 64
Count: 52, Capacity: 64
Count: 53, Capacity: 64
Count: 54, Capacity: 64
Count: 55, Capacity: 64
Count: 56, Capacity: 64
Count: 57, Capacity: 64
Count: 58, Capacity: 64
Count: 59, Capacity: 64
Count: 60, Capacity: 64
Count: 61, Capacity: 64
Count: 62, Capacity: 64
Count: 63, Capacity: 64
Count: 64, Capacity: 64

TrimExcess()

TrimExcess()的意思就是，如果Capacity大于Count，清掉哪些没有使用的空间。基本上可以理解成让Capacity等于Count，只是基本上，不能信赖这一点。.NET毕竟还要考虑很多性能问题。TrimExcess method does nothing if the list is at more than 90 percent of capacity——这就是.NET的方式。实际上把上面那段代码中的注释放开，就会看到确实存在Capacity和Count不等的情况（然而，并不是90%哟）。Capacity不够以后的增长规则，仍然是*2，并不会因为被Trim过就只是加1。

放开注释后的输出

default capacity is : 0
constructe a list with capacity: 0
Count: 0, Capacity: 0
    TrimExcess() -> Count: 0, Capacity: 0
Count: 1, Capacity: 4
    TrimExcess() -> Count: 1, Capacity: 1
Count: 2, Capacity: 2
    TrimExcess() -> Count: 2, Capacity: 2
Count: 3, Capacity: 4
    TrimExcess() -> Count: 3, Capacity: 4
Count: 4, Capacity: 4
    TrimExcess() -> Count: 4, Capacity: 4
Count: 5, Capacity: 8
    TrimExcess() -> Count: 5, Capacity: 5
Count: 6, Capacity: 10
    TrimExcess() -> Count: 6, Capacity: 6
Count: 7, Capacity: 12
    TrimExcess() -> Count: 7, Capacity: 7
Count: 8, Capacity: 14
    TrimExcess() -> Count: 8, Capacity: 8
Count: 9, Capacity: 16
    TrimExcess() -> Count: 9, Capacity: 9
Count: 10, Capacity: 18
    TrimExcess() -> Count: 10, Capacity: 10
Count: 11, Capacity: 20
    TrimExcess() -> Count: 11, Capacity: 11
Count: 12, Capacity: 22
    TrimExcess() -> Count: 12, Capacity: 12
Count: 13, Capacity: 24
    TrimExcess() -> Count: 13, Capacity: 13
Count: 14, Capacity: 26
    TrimExcess() -> Count: 14, Capacity: 14
Count: 15, Capacity: 28
    TrimExcess() -> Count: 15, Capacity: 15
Count: 16, Capacity: 30
    TrimExcess() -> Count: 16, Capacity: 16
Count: 17, Capacity: 32
    TrimExcess() -> Count: 17, Capacity: 17
Count: 18, Capacity: 34
    TrimExcess() -> Count: 18, Capacity: 18
Count: 19, Capacity: 36
    TrimExcess() -> Count: 19, Capacity: 19
Count: 20, Capacity: 38
    TrimExcess() -> Count: 20, Capacity: 20
Count: 21, Capacity: 40
    TrimExcess() -> Count: 21, Capacity: 21
Count: 22, Capacity: 42
    TrimExcess() -> Count: 22, Capacity: 22
Count: 23, Capacity: 44
    TrimExcess() -> Count: 23, Capacity: 23
Count: 24, Capacity: 46
    TrimExcess() -> Count: 24, Capacity: 24
Count: 25, Capacity: 48
    TrimExcess() -> Count: 25, Capacity: 25
Count: 26, Capacity: 50
    TrimExcess() -> Count: 26, Capacity: 26
Count: 27, Capacity: 52
    TrimExcess() -> Count: 27, Capacity: 27
Count: 28, Capacity: 54
    TrimExcess() -> Count: 28, Capacity: 28
Count: 29, Capacity: 56
    TrimExcess() -> Count: 29, Capacity: 29
Count: 30, Capacity: 58
    TrimExcess() -> Count: 30, Capacity: 30
Count: 31, Capacity: 60
    TrimExcess() -> Count: 31, Capacity: 31
Count: 32, Capacity: 62
    TrimExcess() -> Count: 32, Capacity: 32
Count: 33, Capacity: 64
    TrimExcess() -> Count: 33, Capacity: 33
Count: 34, Capacity: 66
    TrimExcess() -> Count: 34, Capacity: 34
Count: 35, Capacity: 68
    TrimExcess() -> Count: 35, Capacity: 35
Count: 36, Capacity: 70
    TrimExcess() -> Count: 36, Capacity: 36
Count: 37, Capacity: 72
    TrimExcess() -> Count: 37, Capacity: 37
Count: 38, Capacity: 74
    TrimExcess() -> Count: 38, Capacity: 38
Count: 39, Capacity: 76
    TrimExcess() -> Count: 39, Capacity: 39
Count: 40, Capacity: 78
    TrimExcess() -> Count: 40, Capacity: 40
Count: 41, Capacity: 80
    TrimExcess() -> Count: 41, Capacity: 41
Count: 42, Capacity: 82
    TrimExcess() -> Count: 42, Capacity: 42
Count: 43, Capacity: 84
    TrimExcess() -> Count: 43, Capacity: 43
Count: 44, Capacity: 86
    TrimExcess() -> Count: 44, Capacity: 44
Count: 45, Capacity: 88
    TrimExcess() -> Count: 45, Capacity: 45
Count: 46, Capacity: 90
    TrimExcess() -> Count: 46, Capacity: 46
Count: 47, Capacity: 92
    TrimExcess() -> Count: 47, Capacity: 47
Count: 48, Capacity: 94
    TrimExcess() -> Count: 48, Capacity: 48
Count: 49, Capacity: 96
    TrimExcess() -> Count: 49, Capacity: 49
Count: 50, Capacity: 98
    TrimExcess() -> Count: 50, Capacity: 50
Count: 51, Capacity: 100
    TrimExcess() -> Count: 51, Capacity: 51
Count: 52, Capacity: 102
    TrimExcess() -> Count: 52, Capacity: 52
Count: 53, Capacity: 104
    TrimExcess() -> Count: 53, Capacity: 53
Count: 54, Capacity: 106
    TrimExcess() -> Count: 54, Capacity: 54
Count: 55, Capacity: 108
    TrimExcess() -> Count: 55, Capacity: 55
Count: 56, Capacity: 110
    TrimExcess() -> Count: 56, Capacity: 56
Count: 57, Capacity: 112
    TrimExcess() -> Count: 57, Capacity: 57
Count: 58, Capacity: 114
    TrimExcess() -> Count: 58, Capacity: 58
Count: 59, Capacity: 116
    TrimExcess() -> Count: 59, Capacity: 59
Count: 60, Capacity: 118
    TrimExcess() -> Count: 60, Capacity: 60
Count: 61, Capacity: 120
    TrimExcess() -> Count: 61, Capacity: 61
Count: 62, Capacity: 122
    TrimExcess() -> Count: 62, Capacity: 62
Count: 63, Capacity: 124
    TrimExcess() -> Count: 63, Capacity: 63
Count: 64, Capacity: 126
    TrimExcess() -> Count: 64, Capacity: 64

发现并不是90%以后

System.Diagnostics.Debug.WriteLine(string.Format("default capacity is : {0}", new List<string>().Capacity));

int initCapacity = 100;
List<string> l = new List<string>(initCapacity);
System.Diagnostics.Debug.WriteLine(string.Format("constructe a list with capacity: {0}", l.Capacity));

int initCount = 100;
for (int u = 0; u < initCount; ++u)
{
    l.Add(u.ToString());
}

for (int u = 0; u < initCount; ++u)
{
    System.Diagnostics.Debug.WriteLine(string.Format("Count: {0}, Capacity: {1}", l.Count, l.Capacity));
    l.TrimExcess();
    System.Diagnostics.Debug.WriteLine(string.Format("    TrimExcess() -> Count: {0}, Capacity: {1}", l.Count, l.Capacity));
    l.Remove(u.ToString());
}

得到

default capacity is : 0
constructe a list with capacity: 100
Count: 100, Capacity: 100
    TrimExcess() -> Count: 100, Capacity: 100
Count: 99, Capacity: 100
    TrimExcess() -> Count: 99, Capacity: 100
Count: 98, Capacity: 100
    TrimExcess() -> Count: 98, Capacity: 100
Count: 97, Capacity: 100
    TrimExcess() -> Count: 97, Capacity: 100
Count: 96, Capacity: 100
    TrimExcess() -> Count: 96, Capacity: 100
Count: 95, Capacity: 100
    TrimExcess() -> Count: 95, Capacity: 100
Count: 94, Capacity: 100
    TrimExcess() -> Count: 94, Capacity: 100
Count: 93, Capacity: 100
    TrimExcess() -> Count: 93, Capacity: 100
Count: 92, Capacity: 100
    TrimExcess() -> Count: 92, Capacity: 100
Count: 91, Capacity: 100
    TrimExcess() -> Count: 91, Capacity: 100
Count: 90, Capacity: 100
    TrimExcess() -> Count: 90, Capacity: 100
Count: 89, Capacity: 100
    TrimExcess() -> Count: 89, Capacity: 89
Count: 88, Capacity: 89
    TrimExcess() -> Count: 88, Capacity: 89
Count: 87, Capacity: 89
    TrimExcess() -> Count: 87, Capacity: 89
Count: 86, Capacity: 89
    TrimExcess() -> Count: 86, Capacity: 89
Count: 85, Capacity: 89
    TrimExcess() -> Count: 85, Capacity: 89
Count: 84, Capacity: 89
    TrimExcess() -> Count: 84, Capacity: 89
Count: 83, Capacity: 89
    TrimExcess() -> Count: 83, Capacity: 89
Count: 82, Capacity: 89
    TrimExcess() -> Count: 82, Capacity: 89
Count: 81, Capacity: 89
    TrimExcess() -> Count: 81, Capacity: 89
Count: 80, Capacity: 89
    TrimExcess() -> Count: 80, Capacity: 89
Count: 79, Capacity: 89
    TrimExcess() -> Count: 79, Capacity: 79
Count: 78, Capacity: 79
    TrimExcess() -> Count: 78, Capacity: 79
Count: 77, Capacity: 79
    TrimExcess() -> Count: 77, Capacity: 79
Count: 76, Capacity: 79
    TrimExcess() -> Count: 76, Capacity: 79
Count: 75, Capacity: 79
    TrimExcess() -> Count: 75, Capacity: 79
Count: 74, Capacity: 79
    TrimExcess() -> Count: 74, Capacity: 79
Count: 73, Capacity: 79
    TrimExcess() -> Count: 73, Capacity: 79
Count: 72, Capacity: 79
    TrimExcess() -> Count: 72, Capacity: 79
Count: 71, Capacity: 79
    TrimExcess() -> Count: 71, Capacity: 79
Count: 70, Capacity: 79
    TrimExcess() -> Count: 70, Capacity: 70
Count: 69, Capacity: 70
    TrimExcess() -> Count: 69, Capacity: 70
Count: 68, Capacity: 70
    TrimExcess() -> Count: 68, Capacity: 70
Count: 67, Capacity: 70
    TrimExcess() -> Count: 67, Capacity: 70
Count: 66, Capacity: 70
    TrimExcess() -> Count: 66, Capacity: 70
Count: 65, Capacity: 70
    TrimExcess() -> Count: 65, Capacity: 70
Count: 64, Capacity: 70
    TrimExcess() -> Count: 64, Capacity: 70
Count: 63, Capacity: 70
    TrimExcess() -> Count: 63, Capacity: 70
Count: 62, Capacity: 70
    TrimExcess() -> Count: 62, Capacity: 62
Count: 61, Capacity: 62
    TrimExcess() -> Count: 61, Capacity: 62
Count: 60, Capacity: 62
    TrimExcess() -> Count: 60, Capacity: 62
Count: 59, Capacity: 62
    TrimExcess() -> Count: 59, Capacity: 62
Count: 58, Capacity: 62
    TrimExcess() -> Count: 58, Capacity: 62
Count: 57, Capacity: 62
    TrimExcess() -> Count: 57, Capacity: 62
Count: 56, Capacity: 62
    TrimExcess() -> Count: 56, Capacity: 62
Count: 55, Capacity: 62
    TrimExcess() -> Count: 55, Capacity: 62
Count: 54, Capacity: 62
    TrimExcess() -> Count: 54, Capacity: 54
Count: 53, Capacity: 54
    TrimExcess() -> Count: 53, Capacity: 54
Count: 52, Capacity: 54
    TrimExcess() -> Count: 52, Capacity: 54
Count: 51, Capacity: 54
    TrimExcess() -> Count: 51, Capacity: 54
Count: 50, Capacity: 54
    TrimExcess() -> Count: 50, Capacity: 54
Count: 49, Capacity: 54
    TrimExcess() -> Count: 49, Capacity: 54
Count: 48, Capacity: 54
    TrimExcess() -> Count: 48, Capacity: 54
Count: 47, Capacity: 54
    TrimExcess() -> Count: 47, Capacity: 47
Count: 46, Capacity: 47
    TrimExcess() -> Count: 46, Capacity: 47
Count: 45, Capacity: 47
    TrimExcess() -> Count: 45, Capacity: 47
Count: 44, Capacity: 47
    TrimExcess() -> Count: 44, Capacity: 47
Count: 43, Capacity: 47
    TrimExcess() -> Count: 43, Capacity: 47
Count: 42, Capacity: 47
    TrimExcess() -> Count: 42, Capacity: 47
Count: 41, Capacity: 47
    TrimExcess() -> Count: 41, Capacity: 41
Count: 40, Capacity: 41
    TrimExcess() -> Count: 40, Capacity: 41
Count: 39, Capacity: 41
    TrimExcess() -> Count: 39, Capacity: 41
Count: 38, Capacity: 41
    TrimExcess() -> Count: 38, Capacity: 41
Count: 37, Capacity: 41
    TrimExcess() -> Count: 37, Capacity: 41
Count: 36, Capacity: 41
    TrimExcess() -> Count: 36, Capacity: 41
Count: 35, Capacity: 41
    TrimExcess() -> Count: 35, Capacity: 35
Count: 34, Capacity: 35
    TrimExcess() -> Count: 34, Capacity: 35
Count: 33, Capacity: 35
    TrimExcess() -> Count: 33, Capacity: 35
Count: 32, Capacity: 35
    TrimExcess() -> Count: 32, Capacity: 35
Count: 31, Capacity: 35
    TrimExcess() -> Count: 31, Capacity: 35
Count: 30, Capacity: 35
    TrimExcess() -> Count: 30, Capacity: 30
Count: 29, Capacity: 30
    TrimExcess() -> Count: 29, Capacity: 30
Count: 28, Capacity: 30
    TrimExcess() -> Count: 28, Capacity: 30
Count: 27, Capacity: 30
    TrimExcess() -> Count: 27, Capacity: 30
Count: 26, Capacity: 30
    TrimExcess() -> Count: 26, Capacity: 26
Count: 25, Capacity: 26
    TrimExcess() -> Count: 25, Capacity: 26
Count: 24, Capacity: 26
    TrimExcess() -> Count: 24, Capacity: 26
Count: 23, Capacity: 26
    TrimExcess() -> Count: 23, Capacity: 26
Count: 22, Capacity: 26
    TrimExcess() -> Count: 22, Capacity: 22
Count: 21, Capacity: 22
    TrimExcess() -> Count: 21, Capacity: 22
Count: 20, Capacity: 22
    TrimExcess() -> Count: 20, Capacity: 22
Count: 19, Capacity: 22
    TrimExcess() -> Count: 19, Capacity: 22
Count: 18, Capacity: 22
    TrimExcess() -> Count: 18, Capacity: 18
Count: 17, Capacity: 18
    TrimExcess() -> Count: 17, Capacity: 18
Count: 16, Capacity: 18
    TrimExcess() -> Count: 16, Capacity: 18
Count: 15, Capacity: 18
    TrimExcess() -> Count: 15, Capacity: 15
Count: 14, Capacity: 15
    TrimExcess() -> Count: 14, Capacity: 15
Count: 13, Capacity: 15
    TrimExcess() -> Count: 13, Capacity: 15
Count: 12, Capacity: 15
    TrimExcess() -> Count: 12, Capacity: 12
Count: 11, Capacity: 12
    TrimExcess() -> Count: 11, Capacity: 12
Count: 10, Capacity: 12
    TrimExcess() -> Count: 10, Capacity: 12
Count: 9, Capacity: 12
    TrimExcess() -> Count: 9, Capacity: 9
Count: 8, Capacity: 9
    TrimExcess() -> Count: 8, Capacity: 9
Count: 7, Capacity: 9
    TrimExcess() -> Count: 7, Capacity: 7
Count: 6, Capacity: 7
    TrimExcess() -> Count: 6, Capacity: 7
Count: 5, Capacity: 7
    TrimExcess() -> Count: 5, Capacity: 5
Count: 4, Capacity: 5
    TrimExcess() -> Count: 4, Capacity: 5
Count: 3, Capacity: 5
    TrimExcess() -> Count: 3, Capacity: 3
Count: 2, Capacity: 3
    TrimExcess() -> Count: 2, Capacity: 3
Count: 1, Capacity: 3
    TrimExcess() -> Count: 1, Capacity: 1

貌似条件是酱紫的

if( count<(int)Math.Floor((double)capacity*0.9) )

do trim

我也不知道我要干嘛

List的Capacity

时间： 2024-08-30 11:04:25

List的Capacity的相关文章

STL:string 大小（Size）和容量（Capacity）

strings存在三种“大小”: 1.size()和length() 返回string中现在的字符个数.上述两个函数等效. 成员函数empty()用来检验字符数是否为0,亦即字符串是否为空.你应该优先使用该函数,因为它比length()或size()来得快. 也就是说,使用if(s.empty() == true)而不使用if(s.size() == 0)(笔者注) 2.max_size() 此函数返回一个string最多能够包含的字符数.一个string通常包含一块单独内存区块内的所有字符,所

HDU 1839 Delay Constrained Maximum Capacity Path(二分+最短路）

题目地址:HDU 1839 我去..原来这题这么简单...网络流中这种二分建图的方式做了一大堆了..这种题还能难倒我吗...白天一直没怎么看懂题,对题意懵懵懂懂的...晚上好好看了看题,这不就是网络流中练的最多的那种二分建图模型吗....只是把网络流算法改成最短路就行了..但是两个地方手残了没能在实验室当场A掉..sad... 这题就是二分最小容量,对满足容量的加边,对时间求最短路.如果最短时间比规定时间少的话就可以继续增加容量,直到不能增加为止. 代码如下: #include <iostrea

YARN的capacity调度器主要配置分析

yarn中一个基本的调度单元是队列. yarn的内置调度器: 1.FIFO先进先出,一个的简单调度器,适合低负载集群.2.Capacity调度器,给不同队列(即用户或用户组)分配一个预期最小容量,在每个队列内部用层次化的FIFO来调度多个应用程序.3.Fair公平调度器,针对不同的应用(也可以为用户或用户组),每个应用属于一个队列,主旨是让每个应用分配的资源大体相当.(当然可以设置权重),若是只有一个应用,那集群所有资源都是他的. 适用情况:共享大集群.队列之间有较大差别. capacity调度

vector的capacity增长方式

vector的capacity()调用返回vector中最大能够存储的元素个数,也即在下一次需要扩充容量之前能容纳的元素个数.reserve会使容器在必要的时候增长,以便容纳制指定数目的元素. #include <iostream> #include <vector> using namespace std; int main() { vector<int> u; cout << "Initial capaciry of u: " <

SSH localhost免密不成功 + 集群状态显示Configured Capacity: 0 (0 KB)

前一天运行hadoop一切安好,今天重新运行出现BUG.下面对遇到的bug.产生原因以及解决方法进行一下简单总结记录. [bug1]用ssh localhost免密登录时提示要输入密码. 原因分析:之前配置好了ssh免密登录并且ssh localhost以及ssh Slave1.ssh Master.ssh Slave2等都可以成功实现免密登录,后来突然想起前一天晚上用scp在节点之间传输文件的时候提示没有相关权限从而对节点的/home目录做过权限更改,而.ssh文件夹就在/home/hadoo

HDU1839Delay Constrained Maximum Capacity Path（二分答案+SPFA）经典

Delay Constrained Maximum Capacity Path Time Limit: 10000/10000 MS (Java/Others)    Memory Limit: 65535/65535 K (Java/Others) Total Submission(s): 1314    Accepted Submission(s): 418 Problem Description Consider an undirected graph with N vertices, n

错误记录- 用了皮肤控件之后，报错:容量超出了最大容量 参数名:capacity

http://blog.csdn.net/keenweiwei/article/details/7403869 用了皮肤控件之后,报错:容量超出了最大容量 参数名:capacity MessageBox.show()错误!!容量超出了最大容量.参数名: capacity 解决方案: 设置      skin.SkinDialogs = false; 一些小毛病,但是解决还是稍显麻烦的---不知道错在哪里

复习图---Delay Constrained Maximum Capacity Path（SPFA+二分）

Delay Constrained Maximum Capacity Path Time Limit:10000MS     Memory Limit:65535KB     64bit IO Format:%I64d & %I64u Submit Status Description Consider an undirected graph with N vertices, numbered from 1 to N, and M edges. The vertex numbered with

HDU1839_Delay Constrained Maximum Capacity Path(最短路+二分)

解题报告 http://blog.csdn.net/juncoder/article/details/38349019 题目传送门 题意: 有N个点,点1为珍贵矿物的采矿区, 点N为加工厂,有M条双向连通的边连接这些点.走每条边的运输容量为C,运送时间为D. 他们要选择一条从1到N的路径运输, 这条路径的运输总时间要在T之内,在这个前提之下,要让这条路径的运输容量尽可能地大. 一条路径的运输容量取决与这条路径中的运输容量最小的那条边. 思路: 二分容量建图,spfa判时间是否符合条件 #incl

ElasticSearch报 EsThreadPoolExecutor[search, queue capacity = 1000, [email&#160;protected]efba

ElasticSearch报以下错误的解决办法: "type": "es_rejected_execution_exception", "reason": "rejected execution of [email protected] on EsThreadPoolExecutor[search, queue capacity = 1000, [email protected]efba[Running, pool size = 7,