1.逆时针
代码：
1 // huanxingjz.cpp : Defines the entry point for the console application. 2 // 3 4 #include "stdafx.h" 5 #include <stdio.h> 6 #include <iostream> 7 #include "windows.h" 8 #define MAX 40 9 using namespace std; 10 int n,square[MAX][MAX]; 11 12 int ok(int x,int y) 13 { 14 return (0<=x&&x<n&&0<=y&&y<n&&square[x][y]==0); 15 } 16 17 int main() 18 { 19 int i,j,k,d; 20 printf("请输入螺旋方阵的阶数n："); 21 //scanf("%d",&n); 22 cin>> n; 23 memset(square,0,MAX*MAX*sizeof(int)); 24 25 for(i=j=d=0,k=1;k<=n*n;++k) 26 { 27 square[i][j]=k; 28 switch(d%4) 29 { 30 case 0:if(ok(i+1,j)) ++i; 31 else ++d,++j; 32 break; 33 case 1:if(ok(i,j+1)) ++j; 34 else ++d,--i; 35 break; 36 case 2:if(ok(i-1,j)) --i; 37 else ++d,--j; 38 break; 39 case 3:if(ok(i,j-1)) --j; 40 else ++d,++i; 41 42 43 } 44 } 45 46 for(i=0;i<n;++i) 47 { 48 printf(" "); 49 for(j=0;j<n;++j) 50 printf("%4d",square[i][j]); 51 printf(" "); 52 } 53 printf(" "); 54 Sleep(10000); 55 /*system("pause");*/ 56 }
2.顺时针
代码
1 // huanxingjz.cpp : Defines the entry point for the console application. 2 // 3 4 #include "stdafx.h" 5 #include <stdio.h> 6 #include <iostream> 7 #include "windows.h" 8 #define MAX 40 9 using namespace std; 10 int n,square[MAX][MAX]; 11 12 int ok(int x,int y) 13 { 14 return (0<=x&&x<n&&0<=y&&y<n&&square[x][y]==0); 15 } 16 17 int main() 18 { 19 int i,j,k,d; 20 printf("请输入螺旋方阵的阶数n："); 21 //scanf("%d",&n); 22 cin>> n; 23 memset(square,0,MAX*MAX*sizeof(int)); 24 25 for(i=j=d=0,k=1;k<=n*n;++k) 26 { 27 square[i][j]=k; 28 switch(d%4) 29 { 30 case 0:if(ok(i,j+1)) ++j; 31 else ++d,++i; 32 break; 33 case 1:if(ok(i+1,j)) ++i; 34 else ++d,--j; 35 break; 36 case 2:if(ok(i,j-1)) --j; 37 else ++d,--i; 38 break; 39 case 3:if(ok(i-1,j)) --i; 40 else ++d,++j; 41 42 43 } 44 } 45 46 for(i=0;i<n;++i) 47 { 48 printf(" "); 49 for(j=0;j<n;++j) 50 printf("%4d",square[i][j]); 51 printf(" "); 52 } 53 printf(" "); 54 Sleep(10000); 55 /*system("pause");*/ 56 }