题解 | #空心正方形图案#
空心正方形图案
https://www.nowcoder.com/practice/72347ee949dc47399186ee183632f303
while True:
try:
n=int(input())
for i in range(1,n+1):
for j in range(1,n+1):
if i==1 or j==1 or i==n or j==n:
print("* ",end="")
else:
print(" ",end="")
print()
except:
break
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