mirror of
https://github.com/This-weiyuqing/DSAndOS.git
synced 2026-10-17 18:55:44 +08:00
101 lines
1.9 KiB
C++
101 lines
1.9 KiB
C++
#include<iostream>
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#include<fstream>
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using namespace std;
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#define MAXSIZE 100
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#define ERROR 0
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typedef struct { //定义顺序表
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int *elem;
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int length;
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} List;
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int n, m;
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char st = 'A';
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void InitList(List &L) //创建顺序表
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{
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L.elem = new int[MAXSIZE];
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L.length = 0;
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}
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void ListInput(List &L, int n) //顺序表数据的输入
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{
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int i = 0;
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char filename[20] = { 0 };
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cout << "请输入顺序表L" << st << "的数据文件名称(文件名+“.txt”,如List" << st << ".txt):" << endl;
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++st;
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gets(filename);
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fstream file;
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file.open(filename);
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if (!file) {
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cout << "未找到相关文件,无法打开!" << endl;
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exit(ERROR);
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}
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while (!file.eof()) {
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file >> L.elem[i];
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i++;
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}
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L.length = i;
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}
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int ListLength(List L) //求顺序表的长度
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{
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return L.length;
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}
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void GetElem(List L, int i, int &e) //求顺序表的第i个元素,并以e返回
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{
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e = L.elem[i - 1];
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}
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bool LocateElem(List L, int e) //判断List里有没有e这个元素
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{
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int i;
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for (i = 0; i < L.length; i++)
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if (e == L.elem[i])
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return true;
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return false;
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}
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void ListInsert(List &L, int e) //将e插入到List的最后
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{
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L.elem[L.length] = e;
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L.length++;
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}
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void ListOutput(List L) //输出List
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{
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int i;
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for (i = 0; i < L.length; i++)
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cout << L.elem[i] << " ";
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cout << endl;
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}
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void unionList(List &LA, List LB) //算法2.14 线性表的合并(顺序表)
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{
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//将所有在线性表LB中但不在LA中的数据元素插入到LA中
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int LA_len, LB_len, i, e;
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LA_len = ListLength(LA);
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LB_len = ListLength(LB); //求线性表的长度
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for (i = 1; i <= LB_len; i++) {
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GetElem(LB, i, e); //取LB中第i个数据元素赋给e
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if (!LocateElem(LA, e)) //LA中不存在和e相同的数据元素,则插入之
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ListInsert(LA, e);
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}
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} //unionList
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int main() {
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List LA, LB;
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InitList(LA);
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InitList(LB);
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ListInput(LA, n);
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ListInput(LB, m);
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unionList(LA, LB);
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cout << "LA和LB合并后的集合为:\n";
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ListOutput(LA);
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return 0;
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}
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