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- import random
- a=[[random.randint(-10,10) for i in range(4)] for j in range(4)]
- for i in range(4):
- for j in range(4):
- print('%4d'%a[i][j], end=' ')
- print()
- print()
- for i in range(4):
- s=0
- for j in range(4):
- if a[i][j]==0:
- a[0], a[i]=a[i], a[0]
- s=1
- break
- if s==1:
- break
- for i in range(4):
- for j in range(4):
- print('%4d'%a[i][j], end=' ')
- print()
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