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60 lines
1.6 KiB
C++
60 lines
1.6 KiB
C++
//算法8.10 相邻两个有序子序列的归并
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#include <iostream>
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using namespace std;
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#define MAXSIZE 20 //顺序表的最大长度
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typedef struct
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{
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int key;
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char *otherinfo;
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}RedType;
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void Create_Sq(RedType *R)
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{
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int i,n;
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cout<<"请输入数据个数,不超过"<<MAXSIZE<<"个。"<<endl;
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cin>>n; //输入个数
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cout<<"请输入待合并的数据:\n";
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while(n>MAXSIZE)
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{
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cout<<"个数超过上限,不能超过"<<MAXSIZE<<",请重新输入"<<endl;
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cin>>n;
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}
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for(i=0;i<n;i++)
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cin>>R[i].key;
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}
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void Merge(RedType R[],RedType T[],int low,int mid,int high)
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{
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//将有序表R[low..mid]和R[mid+1..high]归并为有序表T[low..high]
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int i,j,k;
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i=low; j=mid+1;k=low;
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while(i<=mid&&j<=high)
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{
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//将R中记录由小到大地并入T中
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if(R[i].key<=R[j].key) T[k++]=R[i++];
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else T[k++]=R[j++];
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}
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while(i<=mid) //将剩余的R[low..mid]复制到T中
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T[k++]=R[i++];
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while(j<=high) //将剩余的R[j.high]复制到T中
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T[k++]=R[j++];
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}//Merge
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void show(RedType *T,int low,int high)
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{
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int i;
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for(i=low;i<=high;i++)
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cout<<T[i].key<<endl;
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}
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void main()
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{
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RedType *R=new RedType[MAXSIZE];
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RedType *T=new RedType[MAXSIZE];
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Create_Sq(R);
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int low,mid,high;
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cout<<"请输入第一个有序子序列的起点、终点下标和第二个有序子序列的终点下标:\n";
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cin>>low>>mid>>high;
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Merge(R,T,low,mid,high);
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cout<<"合并后的结果为:"<<endl;
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show(T,low,high);
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}
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