进程间通信的方式
题目链接：
https://acm.sjtu.edu.cn/OnlineJudge/problem/1021
编程语言：python
import sys
num = int(sys.stdin.readline());
lines = [];
for i in range(num):
lines.append(range(num));
i = 0;
j = 0;
count = 1;
cishu = 0;
while count <= num*num:
j = cishu;
i = cishu;
while j < num - cishu:
lines[i][j] = count;
count = count + 1;
j = j +1;
j -= 1;
i += 1;
while i < num - cishu:
lines[i][j] = count;
count += 1;
i+=1;
i -= 1;
j -= 1;
while j >= 0 + cishu:
lines[i][j] = count;
count+= 1;
j -= 1;
j+=1;
i -= 1;
while i > cishu:
lines[i][j] = count;
count +=1;
i -= 1;
i += 1;
j += 1;
cishu += 1;
for i in range(num):
for j in range(num):
sys.stdout.write(str(lines[i][j]));
sys.stdout.write(" ");
sys.stdout.write("
");
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