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算法技术手册(原书第2 版)
book

算法技术手册(原书第2 版)

by George T.Heineman, Gary Pollice, Stanley Selkow
August 2017
Intermediate to advanced
360 pages
8h 35m
Chinese
China Machine Press
Content preview from 算法技术手册(原书第2 版)
218
8
//
计算将要增加多少流量。结果等同于从汇点到源点计算路径上的最小值。
int increment = Integer.MAX_VALUE;
int v = sink;
while (previous[v] != -1) {
int unit = capacity[previous[v]][v] - flow[previous[v]][v];
if (unit < increment) { increment = unit; }
v = previous[v];
}
//
在路径上增加最少的流。
v = sink;
while (previous[v] != -1) {
flow[previous[v]][v] += increment; //
前向边。
flow[v][previous[v]] -= increment; //
不要忘了后向边。
v = previous[v];
}
return increment;
}
//
寻找流网络中
源顶点到汇点的增广路径。
public boolean search (int source, int sink) {
//
清除访问状态,
0
表示清除状态,
1
表示在队列中,
2
表示已访问。
for (int i = 0 ; i < numVertices; i++) { visited[i] = 0; }
//
创建一个循环队列来处理查找元素。
queue[0] ...
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Publisher Resources

ISBN: 9787111562221