#include<bits/stdc++.h> using namespace std; const int N=10+10; const int INF=0X3f3f3f3f; int n,x=1,y=1,a[N][N],cnt; int main(){ cin>>n; while(cnt<n*n) { while(y<=n && a[x][y]==0) a[x][y++]=++cnt; x++,y--; while(x<=n && a[x][y]==0) a[x++][y]=++cnt; x--,y--; while(y>=1 && a[x][y]==0) a[x][y--]=++cnt; x--,y++; while(x>=1 && a[x][y]==0) a[x--][y]=++cnt; x++,y++; } for(int i=1;i<=n;i++){ for(int j=1;j<=n;j++){ cout<<a[i][j]<<" "; } cout<<endl; }

return 0;

}

#include <math.h>
#include <stdio.h>
#include <iostream>
#include <string.h>
#include <algorithm>
using namespace std;
int dx[] ={0,1,0,-1};
int dy[] ={1,0,-1,0};
int a[100][100];
int main()
{
    int n;
    cin >> n;
    int num = 1;
    int x,y;
    int f = 0;
    x = y = 1;
    while(num <= n*n)
    {
        a[x][y] =num++;
        x += dx[f];
        y += dy[f];
        if(x > n || y > n || x < 1 || y < 1 || a[x][y] != 0)
        {
            if(f == 0) x++ ,y--;
            else if(f == 1) x--,y--;
            else if(f == 2) x--,y++;
            else x++,y++;
            f++;
            f %= 4;
        }
    } 
    for(int i = 1; i <= n ; i++)
    {
        for(int j = 1 ; j <= n ; j++)
            cout << a[i][j] << " ";
        cout << endl;
    }
    return 0;
}

老师抄我的
#include <math.h>
#include <stdio.h>
#include <iostream>
#include <string.h>
#include <algorithm>
using namespace std;
int dx[] ={0,1,0,-1};
int dy[] ={1,0,-1,0};
int a[100][100];
int main()
{
    int n;
    cin >> n;
    int num = 1;
    int x,y;
    int f = 0;
    x = y = 1;
    while(num <= n*n)
    {
        a[x][y] =num++;
        x += dx[f];
        y += dy[f];
        if(x > n || y > n || x < 1 || y < 1 || a[x][y] != 0)
        {
            if(f == 0) x++ ,y--;
            else if(f == 1) x--,y--;
            else if(f == 2) x--,y++;
            else x++,y++;
            f++;
            f %= 4;
        }
    } 
    for(int i = 1; i <= n ; i++)
    {
        for(int j = 1 ; j <= n ; j++)
            cout << a[i][j] << " ";
        cout << endl;
    }
    return 0;
}

#include<bits/stdc++.h> using namespace std; int m,n,sum; double a[11][11]; int main (){ cin>>n; if(n1){ cout<<1; } if(n2){ cout<<1<<" "<<2<<endl<<4<<" "<<3; } if(n3){ cout<<1<<" "<<2<<" "<<3<<endl; cout<<8<<" "<<9<<" "<<4<<endl; cout<<7<<" "<<6<<" "<<5<<endl; } if(n4){ cout<<1<<" "<<2<<" "<<3<<" "<<4<<endl; cout<<12<<" "<<13<<" "<<14<<" "<<5<<endl; cout<<11<<" "<<16<<" "<<15<<" "<<6<<endl; cout<<10<<" "<<9<<" "<<8<<" "<<7<<endl; } if(n5){ cout<<1<<" "<<2<<" "<<3<<" "<<4<<" "<<5<<endl; cout<<16<<" "<<17<<" "<<18<<" "<<19<<" "<<6<<endl; cout<<15<<" "<<24<<" "<<25<<" "<<20<<" "<<7<<endl; cout<<14<<" "<<23<<" "<<22<<" "<<21<<" "<<8<<endl; cout<<13<<" "<<12<<" "<<11<<" "<<10<<" "<<9<<endl; } if(n6){ cout<<1<<" "<<2<<" "<<3<<" "<<4<<" "<<5<<" "<<6<<endl; cout<<20<<" "<<21<<" "<<22<<" "<<23<<" "<<24<<" "<<7<<endl; cout<<19<<" "<<32<<" "<<33<<" "<<34<<" "<<25<<" "<<8<<endl; cout<<18<<" "<<31<<" "<<36<<" "<<35<<" "<<26<<" "<<9<<endl; cout<<17<<" "<<30<<" "<<29<<" "<<28<<" "<<27<<" "<<10<<endl; cout<<16<<" "<<15<<" "<<14<<" "<<13<<" "<<12<<" "<<11<<endl; } if(n7){ cout<<1<<" "<<2<<" "<<3<<" "<<4<<" "<<5<<" "<<6<<" "<<7<<endl; cout<<24<<" "<<25<<" "<<26<<" "<<27<<" "<<28<<" "<<29<<" "<<8<<endl; cout<<23<<" "<<40<<" "<<41<<" "<<42<<" "<<43<<" "<<30<<" "<<9<<endl; cout<<22<<" "<<39<<" "<<48<<" "<<49<<" "<<44<<" "<<31<<" "<<10<<endl; cout<<21<<" "<<38<<" "<<47<<" "<<46<<" "<<45<<" "<<32<<" "<<11<<endl; cout<<20<<" "<<37<<" "<<36<<" "<<35<<" "<<34<<" "<<33<<" "<<12<<endl; cout<<19<<" "<<18<<" "<<17<<" "<<16<<" "<<15<<" "<<14<<" "<<13<<endl; } if(n8){ cout<<1<<" "<<2<<" "<<3<<" "<<4<<" "<<5<<" "<<6<<" "<<7<<" "<<8<<endl; cout<<28<<" "<<29<<" "<<30<<" "<<31<<" "<<32<<" "<<33<<" "<<34<<" "<<9<<endl; cout<<27<<" "<<48<<" "<<49<<" "<<50<<" "<<51<<" "<<52<<" "<<35<<" "<<10<<endl; cout<<26<<" "<<47<<" "<<60<<" "<<61<<" "<<62<<" "<<53<<" "<<36<<" "<<11<<endl; cout<<25<<" "<<46<<" "<<59<<" "<<64<<" "<<63<<" "<<54<<" "<<37<<" "<<12<<endl; cout<<24<<" "<<45<<" "<<58<<" "<<57<<" "<<56<<" "<<55<<" "<<38<<" "<<13<<endl; cout<<23<<" "<<44<<" "<<43<<" "<<42<<" "<<41<<" "<<40<<" "<<39<<" "<<14<<endl; cout<<22<<" "<<21<<" "<<20<<" "<<19<<" "<<18<<" "<<17<<" "<<16<<" "<<15<<endl; } if(n9){ cout<<1<<" "<<2<<" "<<3<<" "<<4<<" "<<5<<" "<<6<<" "<<7<<" "<<8<<" "<<9<<" "<<endl; cout<<32<<" "<<33<<" "<<34<<" "<<35<<" "<<36<<" "<<37<<" "<<38<<" "<<39<<" "<<10<<" "<<endl; cout<<31<<" "<<56<<" "<<57<<" "<<58<<" "<<59<<" "<<60<<" "<<61<<" "<<40<<" "<<11<<" "<<endl; cout<<30<<" "<<55<<" "<<72<<" "<<73<<" "<<74<<" "<<75<<" "<<62<<" "<<41<<" "<<12<<" "<<endl; cout<<29<<" "<<54<<" "<<71<<" "<<80<<" "<<81<<" "<<76<<" "<<63<<" "<<42<<" "<<13<<" "<<endl; cout<<28<<" "<<53<<" "<<70<<" "<<79<<" "<<78<<" "<<77<<" "<<64<<" "<<43<<" "<<14<<" "<<endl; cout<<27<<" "<<52<<" "<<69<<" "<<68<<" "<<67<<" "<<66<<" "<<65<<" "<<44<<" "<<15<<" "<<endl; cout<<26<<" "<<51<<" "<<50<<" "<<49<<" "<<48<<" "<<47<<" "<<46<<" "<<45<<" "<<16<<" "<<endl; cout<<25<<" "<<24<<" "<<23<<" "<<22<<" "<<21<<" "<<20<<" "<<19<<" "<<18<<" "<<17<<" "<<endl; } if(n10){ cout<<1<<" "<<2<<" "<<3<<" "<<4<<" "<<5<<" "<<6<<" "<<7<<" "<<8<<" "<<9<<" "<<10<<endl; cout<<36<<" "<<37<<" "<<38<<" "<<39<<" "<<40<<" "<<41<<" "<<42<<" "<<43<<" "<<44<<" "<<11<<endl; cout<<35<<" "<<64<<" "<<65<<" "<<66<<" "<<67<<" "<<68<<" "<<69<<" "<<70<<" "<<45<<" "<<12<<endl; cout<<34<<" "<<63<<" "<<84<<" "<<85<<" "<<86<<" "<<87<<" "<<88<<" "<<71<<" "<<46<<" "<<13<<endl; cout<<33<<" "<<62<<" "<<83<<" "<<96<<" "<<97<<" "<<98<<" "<<89<<" "<<72<<" "<<47<<" "<<14<<endl; cout<<32<<" "<<61<<" "<<82<<" "<<95<<" "<<100<<" "<<99<<" "<<90<<" "<<73<<" "<<48<<" "<<15<<endl; cout<<31<<" "<<60<<" "<<81<<" "<<94<<" "<<93<<" "<<92<<" "<<91<<" "<<74<<" "<<49<<" "<<16<<endl; cout<<30<<" "<<59<<" "<<80<<" "<<79<<" "<<78<<" "<<77<<" "<<76<<" "<<75<<" "<<50<<" "<<17<<endl; cout<<29<<" "<<58<<" "<<57<<" "<<56<<" "<<55<<" "<<54<<" "<<53<<" "<<52<<" "<<51<<" "<<18<<endl; cout<<28<<" "<<27<<" "<<26<<" "<<25<<" "<<24<<" "<<23<<" "<<22<<" "<<21<<" "<<20<<" "<<19<<endl; }

return 0; }

#include <iostream> #include <cmath> using namespace std; const int N=10+10; int n,a[N][N],cnt,x=1,y=1; int main() { cin>>n; while(cnt<n*n) { while(y <= n && a[x][y] == 0) a[x][y++] = ++cnt; x++,y--; while(x <= n && a[x][y] == 0) a[x++][y] = ++cnt; x--,y--; while(y >= 1 && a[x][y] == 0) a[x][y--] = ++cnt; x--,y++; while(x >= 1 && a[x][y] ==0 ) a[x--][y] = ++cnt; x++,y++; } for(int i = 1;i<=n;i++) { for(int j = 1;j <= n;j++) { cout<<a[i][j]<<" "; } cout<<endl; }

return 0;

}

#include <math.h> #include <stdio.h> #include <iostream> #include <string.h> #include <algorithm> using namespace std; int dx[] ={0,1,0,-1}; int dy[] ={1,0,-1,0}; int a[100][100]; int main() { int n; cin >> n; int num = 1; int x,y; int f = 0; x = y = 1; while(num <= n*n) { a[x][y] =num++; x += dx[f]; y += dy[f]; if(x > n || y > n || x < 1 || y < 1 || a[x][y] != 0) { if(f == 0) x++ ,y--; else if(f == 1) x--,y--; else if(f == 2) x--,y++; else x++,y++; f++; f %= 4; } } for(int i = 1; i <= n ; i++) { for(int j = 1 ; j <= n ; j++) cout << a[i][j] << " "; cout << endl; } return 0; }

左上->右上->右下->左下 这样循环

#include<iostream>
#include<iomanip>
#include<stdio.h>
#include<math.h>
#include<string>
#include<string.h>
#include<sstream>
#include<algorithm>
using namespace std;
typedef long long ll;
const int N=1e1+10;//开大点
const int INF=0x3f3f3f3f;
int a,b,x[N][N];
int main(){
	memset(x,-1,sizeof(x));
	cin>>b;
	for(int i=1;i<=b;i++)
		for(int j=1;j<=b;j++)x[i][j]=0;//规划数组的活动空间
    int n=1,m=0;//m一开始就自增，所以为0
    while(a<=b*b){//a为每次赋值的值
    	while(x[n][++m]==0)x[n][m]=++a;
		n++;//越界了，抵消
		while(x[++n][m]==0)x[n][m]=++a;
		m--;//同上批注
		while(x[n][--m]==0)x[n][m]=++a;
		n--;
		while(x[--n][m]==0)x[n][m]=++a;
		m++;
	}
	for(int i=1;i<=b;i++){//输出
		for(int j=1;j<=b;j++)cout<<x[i][j]<<" ";
		cout<<"\n";
	}
	return 0;
}