Create 2440-create-components-with-same-value.js

Author: everthis

2440-create-components-with-same-value.js

@@ -0,0 +1,50 @@
+/**
+ * @param {number[]} nums
+ * @param {number[][]} edges
+ * @return {number}
+ */
+const componentValue = function(nums, edges) {
+   const n = nums.length, sum = nums.reduce((ac, e) => ac + e, 0)
+   const graph = {}, degree = Array(n).fill(0)
+   const { min } = Math, mi = min(...nums)
+   for(const [u, v] of edges) {
+     if(graph[u] == null) graph[u] = []
+     if(graph[v] == null) graph[v] = []
+     graph[u].push(v)
+     graph[v].push(u)
+     degree[u]++
+     degree[v]++
+   }
+  
+
+   for(let t = mi; t < sum; t++) {
+     if((sum % t === 0) && bfs(t)) return sum / t - 1
+   }
+   
+  return 0
+   
+   
+   function bfs(target) {
+     const vertices = nums.slice(0), deg = degree.slice(0), q = []
+     for(let i = 0; i < n; i++) {
+       if(deg[i] === 1) {
+         q.push(i)
+       }
+     }
+
+     while(q.length) {
+       const cur = q.shift()
+       deg[cur] = 0
+       const nxt = graph[cur] || []
+       for(const e of nxt) {
+         if(vertices[cur] !== target) vertices[e] += vertices[cur]
+         deg[e]--
+         
+         if(deg[e] === 0) return vertices[e] === target
+         else if(deg[e] === 1) q.push(e)
+       }
+     }
+     return false
+   }
+};
+