Method union

frontend/packages/common/src/utils/systemRunning.ts:167–180

(node1: string, node2: string)

  }

  union(node1: string, node2: string): void {
    const root1 = this.find(node1)
    const root2 = this.find(node2)
    if (root1 !== root2) {
      if (this.rank[root1] < this.rank[root2]) {
        this.parent[root1] = root2
      } else if (this.rank[root1] > this.rank[root2]) {
        this.parent[root2] = root1
      } else {
        this.parent[root2] = root1
        this.rank[root1]++
      }
    }
  }
}