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随机数独题的生成.cpp

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+#include <stdio.h>
+#include <time.h>
+#include <stdlib.h>
+int main(){
+  int *compose(int a[][9]);
+  int a[9][9]={0},*p,i;
+  p=compose(a);
+  for(i=1;i<=81;i++)
+  {
+  	if(i%9==0)
+  	printf("%d\n",*p);
+  	else
+  	printf("%d ",*p);
+  	p++;
+  }
+  return 0;
+ }
+int *compose(int a[][9])
+{
+int *creat(int a[]);
+int i,j,k,*p1,*p2,b[9],c[9];
+for(i=0;i<=6;i=i+3)
+{
+	p1=creat(b);
+	for(j=0;j<=2;j++)
+	{
+		p2=creat(c);
+		for(k=1;k<=3;k++)
+		*(*(a+i+j)+*(p2++)-1)=*p1++;
+	}
+}
+return *a;
+}
+int *creat(int a[])//<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>9<EFBFBD><EFBFBD><EFBFBD><EFBFBD>; 
+{
+	void swap(int *p1,int *p2);
+	srand(time(NULL));
+	 static int n=rand();
+	int *p1=a,*p2=a,i;
+	for(i=0;i<=8;i++)
+	{
+		a[i]=i+1;
+	} 
+	for(i=8;i>=0;i--)
+	{   srand(n);
+		p1=a+i;p2=a+rand()%8+1;
+		swap(p1,p2);
+		n++;
+	}
+return a;}	
+void swap(int *p1,int *p2)
+{
+	int temp;
+	temp=*p2;
+	*p2=*p1;
+	*p1=temp;
+	}	
+