本题要求实现快速排序的一趟划分函数,待排序列的长度1<=n<=1000。
函数接口定义:
int Partition ( SqList L, int low, int high );
其中L是待排序表,使排序后的数据从小到大排列。
###类型定义:
typedef int KeyType; typedef struct { KeyType *elem; /*elem[0]一般作哨兵或缓冲区*/ int Length; }SqList;
裁判测试程序样例:
#include<stdio.h> #include<stdlib.h> typedef int KeyType; typedef struct { KeyType *elem; /*elem[0]一般作哨兵或缓冲区*/ int Length; }SqList; void CreatSqList(SqList *L);/*待排序列建立,由裁判实现,细节不表*/ int Partition ( SqList L,int low, int high ); void Qsort ( SqList L,int low, int high ); int main() { SqList L; int i; CreatSqList(&L); Qsort(L,1,L.Length); for(i=1;i<=L.Length;i++) printf("%d ",L.elem[i]); return 0; } void Qsort ( SqList L,int low, int high ) { int pivotloc; if(low<high) { pivotloc = Partition(L, low, high ) ; Qsort (L, low, pivotloc-1) ; Qsort (L, pivotloc+1, high ); } } /*你的代码将被嵌在这里 */
输入样例:
第一行整数表示参与排序的关键字个数。第二行是关键字值 例如:
10 5 2 4 1 8 9 10 12 3 6
int Partition ( SqList L,int low, int high ){ int temp=L.elem[low]; while(low<high) { while(low<high&&L.elem[high]>=temp){ high--; } if(low<high){ L.elem[low]=L.elem[high]; low++; } while(low<high&&L.elem[low]<temp){ low++; } if(low<high){ L.elem[high]=L.elem[low]; high--; } }L.elem[low]=temp; return low; }
标签:int,elem,high,low,SqList,排序,快速 From: https://www.cnblogs.com/kk4458/p/17003367.html