九度 遍历链表

/*
 * c.cpp
 *
 *  Created on: 2013-10-7
 *      Author: wangzhu
 */

#include<cstdio>
#include<iostream>
using namespace std;
struct Node {
    int key;
    Node* next;
};
void addToTail(Node* root, int val) {
    Node* node = new Node;
    node->key = val;
    node->next = NULL;

    if (root->next == NULL) {
        root->next = node;
    } else {
        Node* tempNode = root->next;
        Node* tempPNode = root;
        while (tempNode->next != NULL) {
            if (tempNode->key > val) {
                Node* temp = tempPNode->next;
                node->next = temp;
                tempPNode->next = node;
                return;
            }
            tempNode = tempNode->next;
            tempPNode = tempPNode->next;
        }
        if (tempNode->key > val) {
            Node* temp = tempPNode->next;
            node->next = temp;
            tempPNode->next = node;
            return;
        }
        tempNode->next = node;
    }
}
void printTail(Node* node) {
    while (node->next != NULL) {
        printf("%d ", node->key);
        node = node->next;
    }
    printf("%d\n", node->key);
}
int main() {
    freopen("data.in", "r", stdin);
    int n,val;
    Node* root;
    while(~scanf("%d",&n)) {
        root = new Node;
        root->next = NULL;
        for(int i = 0;i < n;i++) {
            scanf("%d",&val);
            addToTail(root,val);
        }
        printTail(root->next);
    }
    return 0;
}