#include "stdio.h" #include "stdlib.h" #define new(Class) (Class*)malloc(sizeof(Class)) typedef struct node Node; struct node{ Node *next[3]; char content; }; Node* createTree(){ Node* A = new(Node); Node* B = new(Node); Node* C = new(Node); Node* D = new(Node); Node * E = new (Node); Node* F = new(Node); Node* G = new(Node); Node* H = new(Node); Node* I = new(Node); A->content = 'A'; B->content = 'B'; C->content = 'C'; D->content = 'D'; E->content = 'E'; F->content = 'F'; G->content = 'G'; H->content = 'H'; I->content = 'I'; A->next[0] = B; A->next[1] = C; A->next[2] = NULL; B->next[0] = D; B->next[1] = E; B->next[2] = F; C->next[0] = G; C->next[1] = H; C->next[2] = NULL; D->next[0] = NULL; D->next[1] = NULL; D->next[2] = NULL; E->next[0] = I; E->next[1] = NULL; E->next[2] = NULL; F->next[0] = NULL; F->next[1] = NULL; F->next[2] = NULL; G->next[0] = NULL; G->next[1] = NULL; G->next[2] = NULL; H->next[0] = NULL; H->next[1] = NULL; H->next[2] = NULL; I->next[0] = NULL; I->next[1] = NULL; I->next[2] = NULL; return A; } void readTree(Node* head){ int i; Node* cursor = head; printf("%c\n", cursor->content); for(i = 0; i < 3; i++){ if(cursor->next[i] != NULL){ readTree(cursor->next[i]); } } } int main(){ readTree(createTree()); return 0; }
Preorder recursive traversal method of array-shaped polytree with n-ary tree (n has the maximum value)
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