拼多多tree真恶心，输出格式调半天

参考楼主的写了一个递归的 class TreeNode(object): def __init__(self,val,parent): self.val = val self.child = [] self.parent = parent def SetPre(pre,s): pre=pre.replace('-'," ") pre=pre.replace('`'," ") return pre+s def PrintTree(root,pree): if root.parent == -1: print(root.val) else: print(pree+" "+root.val) if root.child: root.child.sort(key = lambda x:x.val) for ind,child in enumerate(root.child): if ind != len(root.child)-1: pre = SetPre(pree,"|--") PrintTree(child,pre) else: pre = SetPre(pree,"`--") PrintTree(child,pre) n = int(raw_input()) nodes = [] for i in xrange(n): fileParent = raw_input().split() node = TreeNode(fileParent[0],int(fileParent[1])) nodes.append(node) if int(fileParent[1]) != -1: nodes[int(fileParent[1])].child.append(node) PrintTree(nodes[0],"")

这题过了？？？？？？？？？？？？？？

用递归

666，看见这题直接放弃了。。。