1133 Splitting A Linked List (25分)
Given a singly linked list, you are supposed to rearrange its elements so that all the negative values appear before all of the non-negatives, and all the values in [0, K] appear before all those greater than K. The order of the elements inside each class must not be changed. For example, given the list being 18→7→-4→0→5→-6→10→11→-2 and K being 10, you must output -4→-6→-2→7→0→5→10→18→11.
Input Specification:
Each input file contains one test case. For each case, the first line contains the address of the first node, a positive N (≤105) which is the total number of nodes, and a positive K (≤103). The address of a node is a 5-digit nonnegative integer, and NULL is represented by −1.
Then N lines follow, each describes a node in the format:
[code]Address Data Next
where
Addressis the position of the node,
Datais an integer in [−105,105], and
Nextis the position of the next node. It is guaranteed that the list is not empty.
Output Specification:
For each case, output in order (from beginning to the end of the list) the resulting linked list. Each node occupies a line, and is printed in the same format as in the input.
Sample Input:
[code]00100 9 10 23333 10 27777 00000 0 99999 00100 18 12309 68237 -6 23333 33218 -4 00000 48652 -2 -1 99999 5 68237 27777 11 48652 12309 7 33218
Sample Output:
[code]33218 -4 68237 68237 -6 48652 48652 -2 12309 12309 7 00000 00000 0 99999 99999 5 23333 23333 10 00100 00100 18 27777 27777 11 -1
作者: CHEN, Yue
单位: 浙江大学
时间限制: 400 ms
内存限制: 64 MB
代码长度限制: 16 KB
编译器 (31)
[code]#include <iostream> #include <stdio.h> #include <vector> #include <map> using namespace std; struct node { int address; int data; int next; }; int main() { int saddress,n,k; map<int,node> mp; vector<node> L,SL; scanf("%d %d %d",&saddress,&n,&k); for(int i=0; i<n; i++) { int a,b,c; scanf("%d%d%d",&a,&b,&c); mp[a]= {a,b,c}; } int t=saddress; while(t!=-1) { L.push_back(mp[t]); t=mp[t].next; } for(int i=0; i<L.size(); i++) if(L[i].data<0)SL.push_back(L[i]); for(int i=0; i<L.size(); i++) if(L[i].data<=k&&L[i].data>=0)SL.push_back(L[i]); for(int i=0; i<L.size(); i++) if(L[i].data>k)SL.push_back(L[i]); for(int i=0; i<L.size(); i++) if(i<SL.size()-1) printf("%05d %d %05d\n",SL[i].address,SL[i].data,SL[i+1].address); else printf("%05d %d %d\n",SL[i].address,SL[i].data,-1); return 0; }
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