0a5f6a8047
- Go backend (server/)
- Frontend (web/, server/static/)
- Database and deployment files
- Scripts and docs
Co-Authored-By: 狸花猫/Claude-Qwen3.6-Plus 🐾
51 lines
1.6 KiB
JavaScript
51 lines
1.6 KiB
JavaScript
"use strict";
|
|
var __importDefault = (this && this.__importDefault) || function (mod) {
|
|
return (mod && mod.__esModule) ? mod : { "default": mod };
|
|
};
|
|
Object.defineProperty(exports, "__esModule", { value: true });
|
|
var Graph_1 = __importDefault(require("../Graph"));
|
|
var PriorityQueue_1 = __importDefault(require("./PriorityQueue"));
|
|
var prim = function (graph, weightFn) {
|
|
var _a;
|
|
var result = new Graph_1.default();
|
|
var parents = new Map();
|
|
var pq = new PriorityQueue_1.default();
|
|
var v;
|
|
function updateNeighbors(edge) {
|
|
var w = edge.v === v ? edge.w : edge.v;
|
|
var pri = pq.priority(w);
|
|
if (pri !== undefined) {
|
|
var edgeWeight = weightFn(edge);
|
|
if (edgeWeight < pri) {
|
|
parents.set(w, v);
|
|
pq.decrease(w, edgeWeight);
|
|
}
|
|
}
|
|
}
|
|
if (graph.nodeCount() === 0) {
|
|
return result;
|
|
}
|
|
graph.nodes().forEach(function (node) {
|
|
pq.add(node, Number.POSITIVE_INFINITY);
|
|
result.setNode(node);
|
|
});
|
|
// Start from an arbitrary node
|
|
pq.decrease(graph.nodes()[0], 0);
|
|
var init = false;
|
|
while (pq.size() > 0) {
|
|
v = pq.removeMin();
|
|
if (parents.has(v)) {
|
|
result.setEdge(v, parents.get(v));
|
|
}
|
|
else if (init) {
|
|
throw new Error('Input graph is not connected: ' + graph.graph());
|
|
}
|
|
else {
|
|
init = true;
|
|
}
|
|
(_a = graph.nodeEdges(v)) === null || _a === void 0 ? void 0 : _a.forEach(updateNeighbors);
|
|
}
|
|
return result;
|
|
};
|
|
exports.default = prim;
|