backend

frontend/scripts/generate_tree.ts

@@ -0,0 +1,61 @@
+/**
+ * Random Tree Generator
+ *
+ * Generates a random tree with 1–MAX_CHILDREN children per node.
+ * Exports a function that returns the tree data in memory.
+ */
+
+// ══════════════════════════════════════════════════════════
+// Configuration
+// ══════════════════════════════════════════════════════════
+
+const TARGET_NODES = 100000;      // Approximate number of nodes to generate
+const MAX_CHILDREN = 3;        // Each node gets 1..MAX_CHILDREN children
+
+// ══════════════════════════════════════════════════════════
+// Tree data types
+// ══════════════════════════════════════════════════════════
+
+export interface TreeData {
+    root: number;
+    nodeCount: number;
+    childrenOf: Map<number, number[]>;
+    parentOf: Map<number, number>;
+}
+
+// ══════════════════════════════════════════════════════════
+// Generator
+// ══════════════════════════════════════════════════════════
+
+export function generateTree(): TreeData {
+    const childrenOf = new Map<number, number[]>();
+    const parentOf = new Map<number, number>();
+
+    const root = 0;
+    let nextId = 1;
+    const queue: number[] = [root];
+    let head = 0;
+
+    while (head < queue.length && nextId < TARGET_NODES) {
+        const parent = queue[head++];
+        const nKids = 1 + Math.floor(Math.random() * MAX_CHILDREN); // 1..MAX_CHILDREN
+
+        const kids: number[] = [];
+        for (let c = 0; c < nKids && nextId < TARGET_NODES; c++) {
+            const child = nextId++;
+            kids.push(child);
+            parentOf.set(child, parent);
+            queue.push(child);
+        }
+        childrenOf.set(parent, kids);
+    }
+
+    console.log(`Generated tree: ${nextId} nodes, ${parentOf.size} edges, root=${root}`);
+
+    return {
+        root,
+        nodeCount: nextId,
+        childrenOf,
+        parentOf,
+    };
+}