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71 lines
1.5 KiB
C++
71 lines
1.5 KiB
C++
//算法8.4 冒泡排序
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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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}ElemType;
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//顺序表的存储结构
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typedef struct
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{
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ElemType *r; //存储空间的基地址
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int length; //顺序表长度
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}SqList; //顺序表类型
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void BubbleSort(SqList &L)
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{
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//对顺序表L做冒泡排序
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int m,j,flag;
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ElemType t;
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m=L.length-1; flag=1; //flag用来标记某一趟排序是否发生交换
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while((m>0)&&(flag==1))
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{
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flag=0; //flag置为0,如果本趟排序没有发生交换,则不会执行下一趟排序
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for(j=1;j<=m;j++)
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if(L.r[j].key>L.r[j+1].key)
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{
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flag=1; //flag置为1,表示本趟排序发生了交换
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t=L.r[j];L.r[j]=L.r[j+1];L.r[j+1]=t; //交换前后两个记录
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} //if
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--m;
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} //while
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} //BubbleSort
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void Create_Sq(SqList &L)
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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<<"请输入待排序的数据:\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=1;i<=n;i++)
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{
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cin>>L.r[i].key;
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L.length++;
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}
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}
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void show(SqList L)
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{
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int i;
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for(i=1;i<=L.length;i++)
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cout<<L.r[i].key<<endl;
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}
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void main()
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{
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SqList L;
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L.r=new ElemType[MAXSIZE+1];
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L.length=0;
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Create_Sq(L);
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BubbleSort(L);
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cout<<"排序后的结果为:"<<endl;
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show(L);
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}
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